Douglass Kay, MD
Douglass Kay, MD is a Psychiatry Physician in Rockville, MD, registered under NPI 1003124306. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Rockville, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 0.30 mi away.
Getting here and what is nearby
Parking 0.25 mi ~6 min
Restaurant St.Veg 0.25 mi ~6 min
14929 Shady Grove Road, Rockville 20850
Mo-Sa 11:00-20:00
Restaurant Bethesda Bagels 0.25 mi ~6 min
14929 Shady Grove Road, Rockville 20850
Mo-Su 06:30-15:00
Restaurant Moby Dick 0.25 mi ~6 min
14929 Shady Grove Road, Rockville 20850
Mo-Th 11:00-21:00; Fr-Sa 11:00-22:00; Su 11:00-21:00
Parking 0.29 mi ~6 min
Parking 0.30 mi ~7 min
Grocery Safeway 0.30 mi ~6 min
14939 Shady Grove Road, Rockville 20850
Mo-Su 06:00-23:00
Hotel Hilton Garden Inn 0.39 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| D0026303 | MD | Psychiatry Physician primary |
This provider holds licence D0026303 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Psychiatry covers
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. NUCC Health Care Provider Taxonomy, code 2084P0800X
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 | 1003124306 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 21, 2010 |
| Last updated | Sep 21, 2010 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
707 OAK KNOLL TER Rockville, MD 20850 (301) 279-0772 Fax (301) 279-0470 |
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 | 0 | 0 | 3 | 1 | 2 | 4 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 2 | 8 | 3 | 0 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.