Doctor profile · Federal record
Dr. Dianna Yan, M.D.
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Gaithersburg, MD
- NPI 1710928411
- 38 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
8909 Shady Grove CT
Gaithersburg, MD 208771308
(301) 963-0900
fax (301) 963-9694
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 16, 2009
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- Maryland #D43385
- Medicaid
- MD #755631400
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710928411. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
158
Distinct HCPCS
3
Medicare allowed
$14,990
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 123 | 40 | $102 | |
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 24 | 24 | $45 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 11 | 11 | $126 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 31. This provider delivers 5.1× the peer median.Open Payments
Industry payments received
All-time total
$146
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inspire Medical Systems, Inc. | 1 | $96.00 | |
| Astellas Pharma US Inc | 1 | $32.47 | |
| CooperSurgical, Inc. | 1 | $17.79 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
137
Patients
82
Total drug cost
$2,621
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Fluconazole | Generic | 32 | 15 | $228 |
| Terconazole | Generic | 21 | 12 | $496 |
| Clotrimazole-Betamethasone (Clotrimazole/Betamethasone Dip) | Brand | 20 | 14 | $358 |
| Cephalexin | Generic | 19 | 16 | $143 |
| Alendronate Sodium | Generic | 18 | 0 | $182 |
| Clindamycin Phosphate | Generic | 15 | 14 | $1,021 |
| Metronidazole | Generic | 12 | 11 | $192 |
Frequently asked questions
What is Dr. Dianna Yan's medical specialty?
Dr. Dianna Yan practices Obstetrics & Gynecology Physician in Gaithersburg, MD.
Where does Dr. Dianna Yan practice?
Dr. Dianna Yan practices at 8909 Shady Grove CT, Gaithersburg, MD 208771308. Office phone: 3019630900.
What is Dr. Dianna Yan's NPI?
Dr. Dianna Yan's National Provider Identifier (NPI) is 1710928411, issued by NPPES.
Does Dr. Dianna Yan accept Medicare assignment?
Dr. Dianna Yan does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Dianna Yan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.