Are you Dianna Yan, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 8909 Shady Grove CT, Gaithersburg, MD 20877
About Dr. Yan
Based in Gaithersburg, MD, Dianna Yan, M.D. is listed in the NPI registry under obstetrics & gynecology. Dianna graduated from Texas Tech University Health Science Center School of Medicine in 1988. Medicare claims data shows Dianna provided 168 services to 81 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, cervical or vaginal cancer screening; pelvic and clinical breast examination, and new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more. NPI 1710928411 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (301) 963-0900
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
8909 SHADY GROVE CT
Gaithersburg, MD 20877
Conditions Commonly Evaluated or Treated
Within Obstetrics and Gynecology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Contraception
Fertility
High-risk or subspecialty
Infections
Pelvic pain and benign gynecology
- Uterine fibroids
- Chronic pelvic pain
- Ovarian cysts
- Painful intercourse
- Pelvic organ prolapse
- Urinary incontinence in women
Most searched conditions
Infections and vulvovaginal conditions
Menstrual and hormonal
- Absent periods
- Genitourinary syndrome of menopause
- Painful periods
- Perimenopause
- Premenstrual syndrome
Pregnancy
- Ectopic pregnancy
- Gestational diabetes
- Hyperemesis gravidarum
- Miscarriage
- Placenta previa
- Postpartum depression
- Preeclampsia
- Preterm labor
Cancer and precancer
- Abnormal cervical cells and cervical dysplasia
- Cervical cancer
- Endometrial cancer
- Endometrial hyperplasia
- Ovarian cancer
Pregnancy Complications
Vaginal & Vulvar Health
Procedures & services
Diagnostic Tests
Hormone & Menopause
Laparoscopic and adnexal surgery
Pelvic floor
Pregnancy and delivery
Preventive and diagnostic
- Pelvic examination
- Transvaginal ultrasound
- Well-woman examination
- Colposcopy
- Endometrial biopsy
- Human papillomavirus testing
Subspecialty procedures
Surgeries
Most searched procedures
Contraception and office treatment
Birth Control
Contraception
Diagnostic Procedures
- Amniocentesis
Fertility
- Egg freezing
- Intrauterine Insemination (IUI)
Postpartum Care
Pregnancy & Prenatal
Preventive Care
Preventive Screening
Routine Exams
Uterine and cervical procedures
Procedures Most Often Billed to Medicare
168 services · 81 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
128 | More than most peers in OB-GYN |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
27 | As often as other peers in OB-GYN |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
13 | Less often than most peers in OB-GYN |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other OB-GYNs in Gaithersburg 8
Same specialty, same city.
Trained at Texas Tech University Health Science Center School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 7 related providers in 1 group
Class of 1988 at Texas Tech University Health Science Center School of Medicine 7
Providers who graduated from the same medical school in the same year.
Common questions
What does Dianna Yan specialize in?
Dianna Yan is an OB-GYN in Gaithersburg, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Obstetrics & Gynecology”.
NPI registry
Where is Dianna Yan located?
Dianna Yan is listed at 8909 Shady Grove CT, Gaithersburg, MD 20877. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dianna Yan's phone number?
The number on file is (301) 963-0900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dianna Yan?
Dianna Yan's National Provider Identifier is 1710928411. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dianna Yan train?
Dianna Yan attended Texas Tech University Health Science Center School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dianna Yan have?
Dianna Yan has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What does Dianna Yan do most often?
According to Medicare billing data, Dianna Yan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dianna Yan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dianna Yan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.