Leslie Ostrow, M.A., PH.D.
Leslie Ostrow, M.A., PH.D. is a Mental Health Counselor in Jamaica Plain, MA, registered under NPI 1003023656.
Getting there
Here is what surrounds this office in Jamaica Plain, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 253 ft away. There is EV charging 0.44 mi from the office (Jamaica Plain Municipal Lot) — useful if you are driving in from out of town. The nearest transit stop is 890 ft away, served by Washington St @ Ophir St. A pharmacy sits 0.40 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Parking 75 ft ~1 min
Restaurant Evergreen Eatery 104 ft ~1 min
154 Green Street, Jamaica Plain 02130
Tu-Sa 08:00-20:30; Su 08:00-15:00
Parking 245 ft ~1 min
Parking 253 ft ~1 min
Transit Washington St @ Green St 622 ft ~3 min
Transit Washington St @ Glen Rd 644 ft ~3 min
Convenience Ruggiero's Market 659 ft ~3 min
3345 Washington Street, Jamaica Plain 02130
Mo-Su 07:00-23:00; Sa 08:00-23:00
Transit Washington St @ Ophir St 890 ft ~4 min
Gas station Stan Hatoff's 0.20 mi ~4 min
3440 Washington Street, Jamaica Plain 02130
Restaurant Burritos Pizzeria 0.27 mi ~6 min
3492 Washington Street, Jamaica Plain 02130
Mo-Su 10:00-22:30
Coffee Happy Lemon 0.31 mi ~7 min
Restaurant JP Kitchen 0.31 mi ~7 min
3510 Washington Street, Jamaica Plain 02130
We-Th 11:00-21:30; Fr 11:00-22:30; Sa 11:30-22:30; Su 11:30-22:30; Mo 11:00-21:30
Coffee Ula Cafe 0.34 mi ~7 min
284 Amory Street, Boston 02130
Mo-Fr 08:00-14:00; Sa-Su 08:00-14:00
Pharmacy CVS Pharmacy 0.40 mi ~8 min
Grocery City Feed and Supply 0.40 mi ~9 min
672 Centre Street, Jamaica Plain 02130
Mo-Sa 07:00-20:00; Su 08:00-20:00
Convenience Smoke Shop & Variety 0.41 mi ~9 min
Coffee Caffè Nero 0.42 mi ~9 min
EV charging Jamaica Plain Municipal Lot 0.44 mi ~9 min
Convenience Joseph's Style Barbershop 0.48 mi ~10 min
3121 Washington Street, Roxbury 02119
Mo-Th 09:00-20:00; Fr 09:00-22:00; Sa 08:00-22:00; Su 11:00-18:00
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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003023656 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 16, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.A., PH.D. |
| Practice address |
157 GREEN ST Jamaica Plain, MA 02130 (617) 983-5859 |
| Mailing address |
437 D ST #3F Boston, MA 02210 |
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 | 0 | 2 | 3 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 6 | 6 | 1 |
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.