Sebastian Mendez
Sebastian Mendez is a Psychiatry Physician in New York, NY, registered under NPI 1003676990.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 0.33 mi away at Knickerbocker Plaza Car Park. The nearest transit stop is 382 ft away, served by East 97th Street & 2nd Avenue. A pharmacy sits 0.20 mi from the entrance (MetroRX Specialty Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 965 ft away.
Getting here and what is nearby
Transit East 97th Street & 1st Avenue 253 ft ~1 min
Transit East 97th Street & 1st Avenue 330 ft ~2 min
Transit East 97th Street & 2nd Avenue 382 ft ~2 min
Convenience Mr. Moe's Gourmet Deli 477 ft ~2 min
Hotel House ZAZA 502 ft ~2 min
330 East 100th Street, 10029
Convenience Olive Oasis Deli & Grill 604 ft ~3 min
Pharmacy Metropolitan Drugs 563 ft ~3 min
1873 2nd Avenue, 10029
Mo-Fr 10:00-18:00; Sa 10:00-15:00
Pharmacy Health Mart 585 ft ~3 min
Restaurant Dunkin' 572 ft ~3 min
1873 2nd Avenue, New York 10029
Mo-Sa 05:30-21:00; Su 05:30-20:00
Coffee Perk Kafe 631 ft ~3 min
1867 2nd Avenue
Mo-Fr 07:00-16:00; Sa, Su 08:00-16:00
Restaurant McDonald's 608 ft ~3 min
Gas station Shell 711 ft ~3 min
Convenience Dave's Market Place 802 ft ~4 min
Restaurant Domino's 839 ft ~4 min
1841 1st Avenue, New York 10128
Su-Th 10:30-24:00, Fr,Sa 10:30-01:00
Coffee Go Cups 915 ft ~4 min
Grocery Cherry Valley Marketplace 906 ft ~4 min
Coffee Madame Bonté Café 965 ft ~4 min
1834 2nd Avenue, New York 10128
Mo-Su 07:00-17:00
Pharmacy MetroRX Specialty Pharmacy 0.20 mi ~5 min
300 East 102nd Street
Mo-Fr 08:00-21:30; Sa 09:00-15:00
Parking Astor Terrace Parking Garage 0.25 mi ~6 min
245 East 93rd Street, New York 10128
Parking 0.26 mi ~6 min
440 East 102nd Street, 10029
Grocery Key Food 0.30 mi ~7 min
1769 2nd Avenue, New York 10128
Mo-Sa 07:00-21:30; Su 07:00-21:00
Grocery Prime Gourmet Market 0.32 mi ~7 min
Parking Knickerbocker Plaza Car Park 0.33 mi ~7 min
Gas station Shell 0.34 mi ~7 min
Hotel Courtyard 0.34 mi ~7 min
Gas station Mobil 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 |
|---|---|---|
| 340039-01 | NY | Psychiatry Physician primary |
This provider holds licence 340039-01 issued in NY. 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 | 1003676990 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 19, 2024 |
| Last updated | Jun 22, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
1901 1ST AVE New York, NY 10029 (646) 672-3143 |
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 | 6 | 7 | 6 | 9 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 7 | 3 | 9 | 9 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.