Dr. Steven Machtinger
Allergy and Immunology
San Mateo, CA
46 years experience male
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Office
Phone
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Aetna Life Insurance Company
Blue Cross of California
Blue Shield of California
Cigna
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Pacificare Life & Health Insurance Company
About
Bio
Steven Machtinger, MD, FAAAI, FACAI is board-certified in pediatrics and in allergy-immunology. Born in Brooklyn, New York he attended M.I.T. completing his bachelor's degree at Princeton. He received his M.D. degree at the University of Pittsburgh School of Medicine. During internship at the University of California, Irvine he became a devoted Left Coaster vowing never to live far from the Pacific Ocean. After two years as a general physician with the Indian Health Service in Warm Springs, Oregon he returned to academia completing pediatric residency and then allergy-immunology-pulmonary fellowship at Stanford. The Stanford program had a strong emphasis on pediatric lung disease. Dr. Machtinger's research focused on the immunology of breastfeeding. He is a fellow of the American Academy of Allergy, Asthma & Immunology.
Since 1983 Dr. Machtinger has been in private practice of pediatric and adult allergy, asthma & immunology in San Mateo County just south of San Francisco. He is a former president of the Allergy Association of Northern California and is currently president of the Allergy, Asthma & Immunology Foundation of Northern California. He is an adjunct clinical associate professor of pediatrics at Packard Childrens Hospital at Stanford where he proctors allergy fellows.
Married since 1976 he & his wife Karen have a daughter, a son and 2 granddaughters (so far). His recreational activities include playing guitar, singing, bicycle riding, and hiking.
SpecialtiesDoctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Allergy and Immunology
Doctor Q&A
921 Answers
703 Agrees
The number of answers this doctor has agreed with.
A 24-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Not safe in car: Epipen (epinephrine) is the most expensive medication you'll never use. I say that because its only used in the event of an unexpected severe allergic... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsReviewed >2 years ago
A 28-year-old male asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
No: Food allergies do not cause autoimmune diseases like lupus.
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 23-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Give albuterol: Persistent coughing may be a symptom of either sinusitis or uncontrolled asthma but rapid breathing is a symptom of asthma. His Flovent & singulair (m... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Drops over rinse: If swallowing & gagging are issues with your son you should probably stay away from the large amounts of saline involved with rinses. In his case this... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 28-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
More details: I completely agree with dr. Mosoff. Most children and infants also have fever in the 39 c (102 f) range. Rsv is highly contageous and may also cause p... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 23-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Is it really asthma?: Wheezing & coughing, the symptoms of asthma, are a result of narrowing of the breathing tubes. When breathing tubes are narrowed at birth asthma is ra... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 25-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Young or old adult?: Young adults - 30s & 40s - with asthma have had it since childhood or had it during childhood, then had resolution for a decade or so, followed by rec... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 34-year-old female asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Acute or chronic?: Acute (<6 weeks) think drug or food allergy, viral infection, contactants like shampoo, cosmetics, sunblock, fabric softener sheets & latex rubber. Ch... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 30-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Absolutely: You may because burning mouth syndrome is not contagious. Be gentle.
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 34-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Picked wrong parents: Hay fever aka allergic rhinitis is an inherited condition. I like to say that noses run in families. One or both of your parents probably have allergi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 34-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Malabsorption: Gluten in wheat acts as a toxin on your small intestine. The damage leads to a marked decrease in the ability to absorb nutrients in any food that you... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 27-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
No: Fair-skinned people may have increased skin sensitivity to sunlight developing an itchy rash on upper back, neck, "v" of the chest, upper arms & forea... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 29-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Erythema nodosum: Erythema nodosum is a tender, bruising rash usually on the lower extremities; most often on the shins. Its may be caused be allergy to amoxicillin, su... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 43-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Glossodynia: Your tongue is covered by taste buds but they don't all look the same. On the front of the tongue are two different types of taste buds; the longer on... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 61-year-old male asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Can be frustrating: Acute hives (<6 weeks) are usually due to a viral infection or food or drug allergy. History & testing can reveal the allergic cause. Hives will not r... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsAnswered >2 years ago
A 50-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Itching & sneezing: Are symptoms specific for allergic rhinitis. When absent & you have other symptoms of rhinitis - congestion, runny nose, burning, post nasal drip, cou... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 30-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Yes.: Neomycin, the antibiotic in neosporin, is a frequent skin sensitizer leading to allergic skin reactions.
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsReviewed >2 years ago
A 36-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Maybe: Itching is a common symptom of disease. The most common cause is dry skin. How to tell itching due to allergy from other causes of itching? Allergic r... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 44-year-old female asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Yes..but: First generation antihistamines like Benadryl (diphenhydramine) cause sedation & slow down reflexes. This prolonged reaction time is the dangerous thi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 25-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Everyone's different: As a class of eye drugs the mast cell stabilizers are usually the best choice for most people. There are a number of effective agents that work well a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 73-year-old male asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Probably: If by respiratory allergy you mean asthma. In asthma inflammatory narrowing of the breathing tubes makes it harder to empty the lungs of air. At the e... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 40-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Yes: Food allergies to crustaceans like shrimp and to tree nuts often appear in adulthood. Part of the problem may be that these foods are eaten infrequent... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 28-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Keep it simple: If your child is prescribed a controller drug make sure to take it everyday. Learn how to use inhaled drugs correctly. Eliminate indoor pollution - ci... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 31-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Go away in kids: You are 37 years old. Although I have seen fish allergy resolve after 20 years or so, for most adults food allergies do not go away. In children & inf... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 35-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Yes: Raynaud's phenomenon is a vasospastic response of small blood vessels in the digits to external cold. It is a risk factor for stroke. You probably can... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 30-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Unproven & unknown: Similasan eye drops for allergy is a homeopathic remedy containing 3 substances that cause eye irritation. Homeopathy involves using highly diluted su... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 21-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Neutral: Exercise can trigger an asthmatic attack characterized by coughing, wheezing and shortness of breath but exercise is good for the heart, the muscles, ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 32-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
45-90 minutes: Antihistamines taken by mouth begin to work in about an hour but may take longer if you've just eaten. Antihistamine nasal sprays (astepro, patanase) ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 45-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Heart effects: Symptoms of Neo-Synephrine overdose include rapid heart rate, irregular heart rate, palpitations, anxiety, hallucinations, abdominal cramps, diarrhea,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 38-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Genetics: The tendency to make more ige in response to foreign substances that enter the body (aka allergens) is inherited. Allergies and parastic infections ar... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 34-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
No...but: I agree with dr. Mcghee's answer. Dizziness can be caused by the medications you're taking to treat allergic rhinitis. Phenylephrine, the decongestant... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 39-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
It's a crustacean.: There are 2 kinds of shellfish - crustaceans & mollusks. Lobster, shrimp, prawn, crab & crayfish are crustaceans relatives of insects and characterize... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 38-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
None: None of the currently available Zicam products described on their corporate website lists dextromethorphan as an ingredient. You can check at www.Zica... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 37-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Eat 'em, Get sick.: Food allergy symptoms are virtually the same regardless of causative agent. If you have almond allergy & eat an almond you will likely have almost imm... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 34-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Some but not all: If when eating raw apple only your mouth itches & your throat feels tight you may have oral allergy syndrome caused by a allergy to birch pollen. If y... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 37-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
No, but why take it?: You won't die if you take 5 or 6 Loratadine tablets (50-60 mg) but this antihistamine that doesn't cause sedation at the usual dose of 10 mg may make ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 29-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Migraine?: Headache associated with gastrointestinal symptoms of nausea and discomfort are often of the migraine variety. Headaches do not have to throb or be co... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsReviewed >2 years ago
A 34-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Yes.: Pregnancy may not affect your asthma, make it better, or make it worse. Now you have two lives to protect yours & the new family member growing inside... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A 42-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Maybe not: Delayed anaphylaxis to red meat thought to be due to an allergy to a sugar not a protein, galactose Alpha 1.3 galactose aka alpha-gal, develops after ... Read More
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5.7k viewsReviewed >2 years ago
A 43-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
A few months: Your body makes the equivalent of 12 mg of Prednisone daily. Once the amount of Prednisone you are taking is less than that, say 10 mg, your moon faci... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 32-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
They may: Especially high dose oral corticosteroids like Prednisone taken for longer periods of time. Inhaled corticosteroids used for the treatment of asthma a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A 42-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Sure.: There are natural alternatives to everything. For asthma they are (1) avoid smoking & second-hand smoke (2) avoid obesity (3) omega-3 and vitamin d (4... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A 48-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Wait a day: And don't go full-steam when next you exercise.
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Chronic urticaria: You have hives. Hives lasting more than 2 months are characterized as chronic. About 95% of chronic hives are a benign but uncomfortable manifestation... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 62-year-old female asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Saline rinses: Can help. Use only if you have a source of pure water. Some sinus specialists try irrigation with a small amount of shampoo or dish detergent added to... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 32-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Stop Yaz (drospirenone and ethinyl estradiol). Call MD: If you believe that you are experiencing an allergic reaction to a medication, any medication, do not take any more of it until you check it out with ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 36-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Moderate RAST result: Dr. Shulan is correct: type 3 immune reactions involve igg & antigen. "class 3 allergy" may also refer to rast, a blood test for detecting ige against... Read More
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5.7k viewsReviewed >2 years ago
A 30-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Death: Within weeks or a few months.
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsAnswered >2 years ago
A 44-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Allergic shiners: Or lack of sleep. Allergic shiners are signs of allergic rhinitis (see photo). Allergic rhinitis often accompanies asthma. If asthma is keeping you up... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A 41-year-old member asked:

Dr. Steven Machtingeranswered
Allergy and Immunology 46 years experience
Poor control: The dose may be inadequate, the diagnosis incorrect, allergenic triggers may be present or the child may be having a complication of asthma such as pn... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
Recommendations and Thank you notes are endorsements given from patients or other doctors.
12
Recommendations
1.8K
Thank you notes
Dec 1, 2012
Dr. Machtinger is a knowledgeable, well-trained allergist with exceptional communication skills. I would not hesitate to refer to him patients I had seen who are moving to San Mateo or its environs.
Nov 11, 2012
Dr. Machtinger is an outstanding allergist-immunologist. It's great "seeing" him on Health Tap!
Apr 7, 2013
Gives very timely and knowledgeable answers to patient questions!
HealthTap member
Thank you.
WHen my son was five he saw a pulmonologist. A test was perform (sweat). It turn out fine. Drs agreed he had asthama at the time. Now pediatrician says he does not have it. My son can not ...Read More
HealthTap member
Thanks Dr. Machtinger. I'll ask his pediatrician if he needs to change his treatment plan. He's already taking flovent inhaler 2x day and albuterol inhaler every 4hrs. When it gets bad he'll use ne...Read More
HealthTap member
Thanks, Dr. Machtinger! I'm pretty sure I'm not in the category of asthmatics or those with immune problems, but thank you for posting the answer just in case it does become relevant for someone. It...Read More
Education & Training
Medical/Graduate school
University of Pittsburgh School of Medicine, PA
Graduated 1977MD
Awards
Top Doctor, Third Place, San Mateo County, CA - Winter
2013
Most Influential, First Place, San Mateo County, CA - Winter
2013
Top Allergist and Immunologist , First Place, California - Winter
2013
Affiliations
AAAAI, ACAAI, AAIFNC, AANC, WSAAI, AANC
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