Isabelle Boundy
Isabelle Boundy is a provider specialising in Clinical Social Worker in New York, NY, registered under NPI 1003577495. 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 New York, based on OpenStreetMap data collected Oct 7, 2026. Parking is available about 733 ft away at 132 East 35th Street Garage LLC. There is EV charging 0.26 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 598 ft away, served by 3rd Avenue & East 33rd Street. A pharmacy sits 971 ft from the entrance (Pasteur Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 418 ft away.
Getting here and what is nearby
Parking 202 ft ~1 min
148 East 33rd Street, 10016
Coffee Arvaci Ciffee 259 ft ~1 min
Mo-Su 07:00-17:00
Convenience Grace Deli 276 ft ~2 min
180 Lexington Avenue, 10016
Restaurant Spice Symphony 256 ft ~1 min
Mo-Th 11:00-14:45,17:00-21:45; Fr-Sa 11:00-14:45,17:00-22:00; Su 11:00-14:45,17:00-21:45
Restaurant Leonetta 256 ft ~1 min
Restaurant Murray Hill Diner 277 ft ~2 min
Hotel The Marmara Park Avenue 336 ft ~2 min
Transit Lexington Avenue & East 34th Street 361 ft ~2 min
Grocery Lidl 388 ft ~2 min
Coffee Blank Street Coffee 400 ft ~2 min
472 3rd Avenue, 10016
Coffee Matto Espresso 418 ft ~2 min
EV charging ChargePoint 431 ft ~2 min
Convenience Yamadaya 406 ft ~2 min
476 3rd Avenue, 10016
Convenience 7-Eleven 407 ft ~2 min
Hotel Hotel 31 438 ft ~2 min
Parking Red Ball Garage 445 ft ~2 min
142 East 31st Street, 10016
Transit Lexington Avenue & East 31st Street 457 ft ~2 min
Pharmacy Zayan Pharmacy 538 ft ~3 min
477 3rd Avenue, 10016
Mo-Su 10:00-22:00 "shop"||Mo-Sa 11:00-19:00 "pharmacy"
Transit 3rd Avenue & East 33rd Street 598 ft ~3 min
Grocery Trader Joe's 572 ft ~3 min
200 East 32nd Street, New York 10016
Mo-Su 08:00-21:00
Pharmacy Duane Reade 628 ft ~3 min
155 East 34th Street, 10016
00:00-24:00 open "Store" || 00:00-24:00 open "Pharmacy"
Parking 132 East 35th Street Garage LLC 733 ft ~3 min
Hotel Mondrian Park Avenue 789 ft ~3 min
Grocery D'Agostino 914 ft ~4 min
Pharmacy Pasteur Pharmacy 971 ft ~4 min
53 East 34th Street, New York 10016
Mo-Fr 08:00-17:00, Sa 10:00-15:00
EV charging ChargePoint 0.26 mi ~6 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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 | 1003577495 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 6, 2022 |
| Last updated | Jan 6, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
205 LEXINGTON AVE FL 10 New York, NY 10016 (212) 335-0034 |
| Mailing address |
208 GARFIELD PL APT 1 Brooklyn, NY 11215 |
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 | 5 | 7 | 7 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 7 | 5 | 4 | 9 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.