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Dr. Marc Rendell

Diabetology
Newport Beach, CA
50 years experience male

Locations

The Rose Salter Diabetes Center

Newport Beach, CA

Address

355 Placentia Avenue, Suite 308, Newport Beach, CA, United States
Directions

Practice website

Fax

8885896967

Insurances accepted

Blue Shield of California

Aetna

Anthem BC Life & Health Insurance Company

Cigna

Medicare

Rose Salter Medical Research Foundation

Newport Beach, CA

About

Bio

I am a specialist in internal medicine, certified in endocrinology and diabetes. We deal with thyroid problems, insulin and non-insulin treated diabetes, adrenal and pituitary issues, and sex hormone abnormalities. Our practice has always emphasized the latest advances, and we participate in research on many drugs before they even reach the market. We are very interested in new diabetes drugs and have been involved in the studies of most of the major agents which have come into use in the past decade. Some examples include Lantus insulin, pioglitazone, sitagliptin, linagliptin, and empagliflozin. We are also involved in the treatment of type 1 diabetes, and have been a part of the NIH study of Alefacept to attempt to reverse early onset insulin dependence. We also deal with the problems caused by diabetes, including diabetic neuropathy and kidney disease. We have been a center for major studies of cholesterol lowering drugs and their effect on heart disease. Our practice is located in Newport Beach near the Hoag Medical Center. You can access more information by looking up the Rose Salter Medical Research Foundation website which will tell you more about our activities. Modern day medicine in the office has a host of activities. Often we don't speak to patients as much as we would like. The benefit of on line meetings is that talk is primary, and that is an advantage. Look forward to meeting you.

Specialties
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.

Diabetology

Endocrinology

Licenses

United States: Nebraska

Languages spoken

English

Doctor Q&A

49 Answers
2 Agrees
The number of answers this doctor has agreed with.
A 24-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Herpes: No. This is not herpes. It appears that you have a viral infection. If you have a fever and a sore throat, it could also be strep and you may need ... Read More
A 17-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Tmj pain: Overusing the masseter does not change the jaw bone but can affect the the joint between the temporal bone and the jawbone
A 34-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Insulin response: this is indicative of an excellent insulin response to carohydrates
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Oral contraceptives: There are many forms of oral contraceptive pills. You should make an appointment with your family doctor to discuss which type will be best for you
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Rectal pain: You are probably right. Typically this could be hemorrhoids. An anal fissure is certainly possible. In any event, softening your stool with dioctyl... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Ruq pain: You have many different gastrointestinal issues. has your gall bladder been checked? Are you taking ulcer medicine? It sounds like you have to see y... Read More
A 28-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Artificial sweetener: The artificial sweeteners have been approved as safe by the FDA. there has been no evidence of harm
A 20-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Furuncle: this may be a hair follicle that became infected. could also be an infected sebaceous cyst. See your doctor to drain. May require an antibiotic
A 57-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Vitamin D: Vitamin D has many benefits beyond calcium balance. there are now studies suggesting beneficial effects on the immune system. Certainly if you had a... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Ear pain: Ear pain can be referred from problems at other sites from the throat to even the thyroid, but she could also have an ear infection or even ear drum p... Read More
A 23-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Eczema: Hard to evaluate without seeing it. You might try an emollient like Cerave to see if it responds. If not, you have to be seen
A 18-year-old member asked:
Dr. Marc Rendell
Diabetology 50 years experience
Abdominal pain: If you do not have nausea, vomiting, or diarrhea and no fever, you do not have to be seen right away. If you have signficant pain, you must be seen. ... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Back pain: You could have a kidney stone. Are you having blood in your urine? It makes sense to see your doctor
A 32-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
No official level: The FDA encourages no more than the recommended dosage of 37.5 mg. Phentermine has effects on the nervous system. High doses can cause mental distrub... Read More
A 48-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Corn: You could have a corn. It will need to be examined. You could try a Dr. Scholls corn pad to see if it relieves pain. Try to get shoes and insole to... Read More
A 36-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Left bundle block: The heart has specialized electrical pathways to make the heart pump properly. The right heart is activated by the right bundle, the left heart by th... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
T4 index: T7 is a calculated value. If Free T4 is within normal limits along with a normal TSH value, do not worry
A 37-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Ignore: Keep a diary what you eat and symptoms you have. It pays to check glucose when symptoms occur.
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Conjunctivitis: this may have nothing to do with the metformin. You could have conjunctivitis due to allergy or infection. See your doctor
A 17-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Intermestrual bleed: If you have irregular periods and acne, that could be related to hormonal imbalance such as polycystic ovaries
A 39-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Alopecia areata: alopecia areata does not cause anemia, but there are conditions of autoimmunity which cause both. For example, lupus is a possibility. Both conditio... Read More
A 34-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Pineal cyst: if there are no symptoms, then followup with repeat MRIs is appropriate. Hope is for no change
A member asked:
Dr. Marc Rendell
Diabetology 50 years experience
Weight gain: Fat has much more calories than carbohydrates or protein. the question is whether you can tolerate fat or it gives you diarrhea. You should be chec... Read More
A 33-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Depression: Depression is an illness. Attention disturbances and difficulty in responding to questions is characteristic. It sounds like you may need treatment
A 40-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Ovulation: You may have ovulated. It makes sense to do a pregnancy test if you do not have period on time
A 21-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Submandibular glands: yes it is normal to feel the submandibular glands. However, if they are getting bigger or painful, that could be a sign of trouble
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Chest pain: Chest pain is a sign of trouble. c-reactive protein is an indicator of blood vessel inflammation. It depends how high your white cells are, but defi... Read More
A 17-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Iud: Unlikely that the intrauterine device is the cause. You may have indigestion for other reasons. A short course of an antacid might be reasonable
A 32-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Bloody stools: It is unlikely that antibiotics are causing bright red rectal bleeding. You will have to be checked for hemorrhoids and may need a colonsocopy
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Trapezium: You have damaged the carpometacarpal joint at the base where the thumb connects to the trapezium. Best treatment is to prevent excess movement. Ther... Read More
A member asked:
Dr. Marc Rendell
Diabetology 50 years experience
Fatty liver: There are many possible cause of fatty liver. If you do not have diabetes, you could still have hyperlipidemia of various types. You need a blood li... Read More
A 30-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Metformin intoleranc: 10 to 15% of people who take immediate acting metformin have gastrointestinal distress. Ask your doctor about metformin extended release to see if yo... Read More
A 37-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Dental 8 year old: You have time, but you should see your dentist to make sure there is no malocclusion
A 21-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Sinusitis: This can happen with sinusitis. However, if it does not get better soon, you need a change in course of treatment
A member asked:
Dr. Marc Rendell
Diabetology 50 years experience
Bartholin cyst: This could be a Bartholin cyst. Hard to tell with examination. You are not describing genital herpes. If it gets bigger or painful, it may have to ... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Gall bladder symptom: This could be related to your gall baldder or could be due to swallowing air. If you have other symptoms such as pain or nausea, you should see your ... Read More
A 28-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
ACTH stim: It appears that the baseline value is low. there is then a brisk response over 21 mcg cortisol at 30 minutes. It increases further at 60 minutes. th... Read More
A member asked:
Dr. Marc Rendell
Diabetology 50 years experience
Pneumothorax: Yes. there can be irritation of the diaphragm or you could be swallowing air due to the physical effect of the pneumothorax.
A 23-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
CNS infarctions diab: The most likely cause of cerebral and subcerebral infarctions in diabetes patients is vascular disease. This correlates with the patient's hypertensi... Read More
A 24-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Acne: This sounds like acne. hard to tell without seeing it. Do you have acne? If so, treatment with benzoyl peroxide may help
A 19-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Heavy period: If you have had similar symptoms with your period previously, this could be endometriosis. You should keep a diary to review your record of problems ... Read More
A 21-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Explosive diarrhea: No. colonic rupture and perforation from the use of laxatives is very unlikely, but the problem here is that you have need for chronic laxatives. Yo... Read More
A 48-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Toe pain: This sounds like diabetic nerve pain, but could also be related to poorly fitted shoes. It would make sense to get shoes with insoles to see if your ... Read More
A male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Cyst: This could be a sebaceous cyst or a lymph node. It is a good sign that it no longer hurts. Would continue to monitor it for change. If it gets large... Read More
A female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Breast lesion: It is hard to assess without an examination. What is your age? Have you had a mammogram?
A 21-year-old male asked:
Dr. Marc Rendell
Diabetology 50 years experience
Polyethylene glycol: PEG and prune juice are safe. The real question is whether you are having less symptoms.
A 19-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Fertility testing: Yes. It is helpful to keep a basal body temperature chart and be careful to carry out the procedures as you have been instructed
A 21-year-old female asked:
Dr. Marc Rendell
Diabetology 50 years experience
Pelvic pain: You may have endometriosis. An ovarian cyst is also possible. Have your tried ibuprofen to relieve discomfort? Certainly you should see your doctor... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

1
Recommendations
33
Thank you notes
HealthTap member
Nov 26, 2015
This Thanksgiving, I wanted to share my appreciation for all that you do! Thank you, doctor! :)
HealthTap member
This was very helpful. Thanks! Thank you for the advice, I am struggling to convince a family member of the importance, but this should do it.
HealthTap member
Your answer made me feel good! Thanks :) Thank you so much Dr. Marc. So it doesn't relate to any cancer?
HealthTap member
Thank You Dr. Rendell for your time and reply. Will try this and get checked out asap.

Education & Training

Medical/Graduate school

State University of New York Downstate Medical Center College of Medicine, NY
Graduated 1972MD

Awards

Top Diabetes Specialist, First Place, the Nation - Spring
2017
HealthTap Founding Doctor

Affiliations

The Rose Salter Medical Research Foundation
Association of Diabetes Investigators

Publications

106) Rendell M. The role of sulphonylureas in the management of type 2 diabetes mellitus. Drugs. 64:1339-58, 2004. 107) Rendell M, Lundberg GD:. A...
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less