U.S. doctors online nowAsk doctors free

Dr. Sophia Yen

Pediatrics
Mountain View, CA
25 years experience female

Locations

LPCH at Stanford's Teen and Young Adult Clinic

Mountain View, CA

Address

1174 Castro St. Suite 250, Mountain View, CA, US
Directions

My office hours

Wednesday: 1:00pm - 4:30pm
Show more

Insurances accepted

Health Net

Aetna

UnitedHealthcare

Tricare

Blue Cross of California

About

Bio

Graduated MIT with a B.S., UC San Francisco Medical School with an MD, pediatrics residency at Children's Hospital of Oakland, Adolescent Medicine Fellowship at UC San Francisco, MPH in Maternal Child Health at UC Berkeley. Currently, am an Assistant Professor of Pediatrics in Adolescent Medicine Division at LPCH at Stanford Medical School. Interests are reproductive health, prevention of teenage pregnancy, obesity.

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.

Pediatrics

Adolescent Medicine

Languages spoken

English

Doctor Q&A

47 Answers
4 Agrees
The number of answers this doctor has agreed with.
A 43-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Possibly: Ebv spreads through bodily fluids e.g. Saliva and blood. So if you share saliva or bodily fluids with your co-worker, you could infect them and pass t... Read More
A 20-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Go see your provider: Depends how long you have been on all those meds. Could be something else. Go see your provider that prescribed those meds.
A 20-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Big or little pain?: if BIG pain, go to the ER and get it checked out. Birth control does not shrink the cyst sometimes and just prevents new ones from happening... if li... Read More
A 21-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Need more info: what pill did you take? birth control pill? emergency contraception pill? ulipristal acetate? or levonorgestrel? wait for period before starting pill... Read More
A 28-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Normal or bacterial: could be normal. theoretically a woman can have all sorts of vaginal discharge throughout her cycle. You may have just become more aware of it. or co... Read More
A 28-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Very unlikely: Very unlikely for oral sex, I would think. but if you think HIV might be involved, get tested. Better safe than sorry. Were you checked for HSV (herpe... Read More
A 27-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
No. not much: No you do not have to restart the whole course yes it will affect the outcome by slowing it down 1 week. But shouldn't affect it much.
A 18-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Wouldn't hurt: It depends when you started your birth control pills. If you started birth control for the 1st time ever 2 weeks ago and you started the 3-5th day of ... Read More
A 24-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Most likely not: Full of clots, unlikely to be implantation bleeding. Spotting - more likely. Most likely just your period.
A 22-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Depends: if you had your tetanus vaccine aka dT within past 9 years, you should be fine. if you are not up to date on your vaccine, then you are probably stil... Read More
A 33-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
It's possible.: If you are not on birth control and you are having sex, then it's possible that you are pregnant. It could also be that the UTI made your period dif... Read More
A 16-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes and No.: You could have a disease if the condom broke or if you didn't use the condom before any penile contact... You could also be irritated by the spermici... Read More
A 36-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
You could, but...: You could get it tested, if it is positive, then you have an answer. If it is negative, then we don't know... http://en.wikipedia.org/wiki/cannabis_... Read More
A 20-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Some people sweat: Some people sweat more than others maybe it's just you. See your provider and if you have excessive sweat, they can consider prescribing you drysol.
A 36-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
No.: You can test it, but it should only reflect her smoking. Not "around her." however the main question is whether you trust your daughter to tell you t... Read More
A 21-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Ibuprofen 800 mg: You can try Ibuprofen 800 mg three times a day with food, assuming you are not on any other medications and you do not have any kidney problems. Othe... Read More
A 38-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
2 websites : To find out about obamacare and where people can sign up. Go here https://www.Healthcare.Gov/families/ for your young person, they will be covered... Read More
A 19-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes: Most side effects will go away by month 3. Just make sure you didn't miss any pills.. And spotting can also be a sign of an std. So make sure you are ... Read More
A 17-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes! Depo=munchies: Yes. Depo Provera can give you the munchies. If you like depo. I suggest you consider the Levonorgestrel iud aka mirena (levonorgestrel). It has the ... Read More
A 20-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Old blood, soon: Most likely it is old blood and it should stop soon. If it doesn't stop in 3 to 5 days, go see your provider/doctor.
A 37-year-old member asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Less soap, baths, oi: Eczema sometimes responds to showering/bathing less frequently. By using strong soaps, you strip the skin of its natural oil. Thus, you need to rep... Read More
A 28-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
See your doctor: Most likely you have pcos, affects 1 in 10 women. Treatment is birth control pills/patch/ring or iud to regulate your periods and decrease change of e... Read More
A 31-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Lab error?: If everything else is normal, could be lab error. Or could be the urine lags the serum. The serum might have been high and now the urine is high. T... Read More
A 25-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Very unlikely: Very unlikely that they are related, like almost zero. Can't even think how they could be related. Sounds like you might have appendicitis or pancrea... Read More
A 37-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Ignore: If you have insurance, go see your doctor. They have good stuff e.g. Tretinoin and doxycycline.
A 49-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes it is fine.: Marlissa is just a generic form of birth control that was pretty standard for a long time. It has an older form of progesterone. Some might choose one... Read More
A 31-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Go see a doctor: 1. Make sure you aren't pregnant! 2. Go see a doctor most likely you have polycystic ovarian syndrome, treatment is usually birth control pills/patch/... Read More
A 21-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
All std tests done?: Most likely it is a scar from an abrasion. A dermatologist or urologist who sees skin or penises respectively should be able to tell you when you get... Read More
A female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Could be pimples: Could be pimples, could be something else go see your provider.
A 19-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
NOT related.: If you are on BCP and only missed 1 pill, you didn't need to take Plan B. but better safe than sorry. The tight throat is NOT related to the medicat... Read More
A 28-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Ovulation: Sounds like you are describing cervical mucus plug coming out (pink discharge) and egg white/stretchy is pretty classic for ovulation cervical mucus ... Read More
A 23-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Depends: How long has it been there. Where exactly is it? It could be a cyst - which needs to be removed surgically. It could be a lymph node - indicates inf... Read More
A 21-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Exercise = good: For those with pcos, exercise often makes their periods regular e.g. Closer to every 28 days.
A 27-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
No.: No. Conscious sedation has far lower risk than general anesthesia. That is why we try to go with conscious sedation instead of general anesthesia if w... Read More
A 33-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
See your doctor: it would be an unusual rash to go arms to chest... see you doctor or dermatologist.
A 16-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
STD check?: Perhaps you aren't using condoms? If so, you can get an std and that can cause a wart that can bleed during sex. Also stds can make a part of your va... Read More
A 44-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes.: Any time you miss your period, you could have gotten pregnant.
A 31-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Time will tell: well, do you feel pregnant? some women know right away. Most women in industrialized countries do not breastfeed enough to prevent ovulation after ... Read More
A 20-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Hormonal change: if your periods are lighter, then it could be a hormonal change. if your periods go away, then go see an MD.
A 22-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Low, depends.: How do you know there was no spillage? Condom got stuck halfway in - doesn't sound good... Ella is a great emergency contraception method. Depending... Read More
A 17-year-old male asked:
Dr. Sophia Yen
Pediatrics 25 years experience
EC disrupts periods: "the morning after pill" is usually levonorgestrel. The way it works is that is "scares your body" with high hormones so it won't release an egg. Oft... Read More
A 27-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Ask your doctor: You should ask your doctor these questions. That's what you are paying for. Also, your insurance company might have a nurse question line. For a baby... Read More
A 20-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Prescription better: If you have health insurance, then the prescription stuff is better. Your doctor can prescribe you tretinoin you can use over the counter benzoyl per... Read More
A 34-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Pregnant?: Could you be pregnant? These are not symptoms usually related to Depo Provera (medroxyprogesterone) or coming off Depo-Provera provera sounds more l... Read More
A 17-year-old female asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes/no.: Depo is known to exacerbate depression in some people. If you aren't depressed but just cry, then no big deal. But if you are depressed, consider the... Read More
A 24-year-old member asked:
Dr. Sophia Yen
Pediatrics 25 years experience
Yes, Yaz (drospirenone and ethinyl estradiol) is good: Yaz (drospirenone and ethinyl estradiol) is the lower dose with fewer placebo pills sister of Yasmin. It has lower estrogen (so less clot risk, but no... Read More

90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.

Ask doctors free
Answer emailed
in 24 hours or less

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

2
Recommendations
39
Thank you notes
HealthTap member
Mar 31, 2015
Dr. Yen is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. Yen is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thank you, your answer was very helpful! Thank you. My Dr told me the same thing but I didnt understand athe ti
HealthTap member
Thanks for your quick reply! Thank You doctor iwas really confused but your reply made me peace....
HealthTap member
Thanks. Does a period get lighter with age? Can diet affect flow?

Education & Training

Medical/Graduate school

UC San Francisco School of Medicine, CA
Graduated 1997MD

Residency

Children's Hospital Oakland
Completed 2000

Awards

Pediatric Clerkship Faculty Honor Roll, Dept of Pediatrics, Stanford Medical School
HealthTap Doctor Mom

Affiliations

Society for Adolescent Health and Medicine
American Academy of Pediatrics
North American Society of Pediatric and Adolescent Gynecology
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