Alan M Leff MD PC
Alan M Leff MD PC is a healthcare organization registered as Pain Medicine (Anesthesiology) Physician in New York, NY, holding Type 2 (organization) NPI 1477500643 since 2006. The authorized official on file is Alan Leff, Office Manager.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1477500643 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Alan M Leff MD PC |
| Other name | <Unavail> |
| Practice address | 338 E 49TH ST, New York, NY, 10017 |
| Phone | 6465210404 |
| Fax | 6465210409 |
| Enumeration date | 2006-05-31 |
| Last updated in NPPES | 2013-05-01 |
Authorized official
| Name | Alan Leff |
|---|---|
| Title | Office Manager |
| Phone | 6465210404 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207LP2900X | Pain Medicine (Anesthesiology) Physician | Primary | 096783 | NY |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00545088 | Medicaid | NY | — |
Copy-ready billing details
Provider: Alan M Leff MD PC NPI: 1477500643 Taxonomy: 207LP2900X (Pain Medicine (Anesthesiology) Physician) Address: 338 E 49TH ST, New York, NY, 10017
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1215978440 | Alan Leff | Individual | Pain Medicine (Anesthesiology) Physician | New York, NY |
| 1215037346 | Katarzyna Wyszynski | Individual | Physical Therapist | New York, NY |
| 1851491971 | Marek Wyszynski | Individual | Physical Therapist | New York, NY |
| 1437212701 | Paul Ji | Individual | Anesthesiology Physician | New York, NY |
| 1154473502 | Teri Klein | Individual | Medical Physician Assistant | New York, NY |
| 1730397423 | Pain Management Ambulatory Services, Inc. | Organization | Ambulatory Surgical Clinic/Center | New York, NY |
| 1104095660 | Physical Therapy & Feldenkrais Nyc, P.C. | Organization | Physical Therapist | New York, NY |
| 1922271964 | Thomas Rawe | Individual | Physical Therapist | New York, NY |
Verify this record
Cross-check NPI 1477500643 against the authoritative CMS record: view Alan M Leff MD PC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What type of organization is Alan M Leff MD PC?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-05-01.