Mark Payson, M.D.
Mark Payson, M.D. is a Reproductive Endocrinology Physician in Bethesda, MD, registered under NPI 1629033634.
Getting there
The practice address on file is UNIFORMED SERVICES UNIVERSITY OF HEALTH SCIENCES RM 3082, 4301 JONES BRIDGE ROAD, Bethesda, MD 20814. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| D0056317 | MD | Reproductive Endocrinology Physician primary |
This provider holds licence D0056317 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Order And Referring Only - Obstetrics/gynecology
- PAC ID
- 9133306707
- Enrollment ID
- I20110608000052
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Obstetrics/gynecology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Reproductive Endocrinology covers
An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility. NUCC Health Care Provider Taxonomy, code 207VE0102X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1629033634 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 20, 2006 |
| Last updated | Jul 13, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
UNIFORMED SERVICES UNIVERSITY OF HEALTH SCIENCES RM 3082, 4301 JONES BRIDGE ROAD Bethesda, MD 20814 (301) 295-3117 |
| Mailing address |
3325 TANTERRA CIR Brookeville, MD 20833 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 2 | 9 | 0 | 3 | 3 | 6 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 4 | 9 | 0 | 3 | 6 | 6 | 6 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.