Alexandra Gersh
Alexandra Gersh is a Specialist in Brooklyn, NY, registered under NPI 1003177874. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Brooklyn, based on OpenStreetMap data collected Sep 9, 2026. Parking is available about 0.49 mi away. The nearest transit stop is 0.35 mi away, served by Kings Highway & Van Sicklen Street. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Gas station BP 187 ft ~1 min
Parking 551 ft ~3 min
Coffee Sarah's Tent 615 ft ~3 min
412 Avenue P
Restaurant Dunkin' 664 ft ~3 min
Restaurant Girolamo's Pizza 0.23 mi ~5 min
176 Avenue O
Mo 11:30-19:30; Tu-Sa 12:00-19:30; Su off
Grocery NetCost Market 0.27 mi ~6 min
2339 65th Street, Brooklyn 11204
Mo-Su 08:00-21:00
Restaurant Te Riki 0.28 mi ~6 min
151 Avenue O
Parking 0.32 mi ~7 min
Transit Avenue N & McDonald Avenue 0.33 mi ~7 min
Convenience Eatables Food Market & Catering 0.33 mi ~7 min
Transit Kings Highway & West 3rd Street 0.34 mi ~7 min
Transit Kings Highway & Van Sicklen Street 0.35 mi ~7 min
Coffee Starbucks 0.36 mi ~8 min
Grocery Key Food 0.36 mi ~8 min
319 Kings Highway, Brooklyn 11223-1401
07:00-22:00
Convenience Kings Express Deli & Grocery 0.38 mi ~8 min
Convenience Diana International 0.38 mi ~8 min
Grocery Food Universe Marketplace 0.39 mi ~8 min
Parking 0.49 mi ~10 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 Specialist covers
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree. NUCC Health Care Provider Taxonomy, code 174400000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 171M00000X | Case Manager/Care Coordinator | — | — | |
| 174400000X | Specialist | — | — | primary |
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 | 1003177874 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 7, 2012 |
| Last updated | Nov 21, 2013 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1580 DAHILL RD SUITE 2 Brooklyn, NY 11204 (718) 375-2505 |
| Mailing address |
2795 SHORE PKWY APT 6A Brooklyn, NY 11223 |
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 | 7 | 7 | 8 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 7 | 5 | 8 | 5 |
Sum = 56 · next multiple of 10 = 60 · 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.