Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gregory Asa Max, M.D.
Psychiatry Physician in Oswego, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538138615
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Registry record
Entity type Individual (Type 1)
Name Dr. Gregory Asa Max
Credential M.D.
Sex Male
Practice address 74 Bunner Street, Oswego, NY, 13126
Phone (718) 960-6159
Enumeration date Mar 14, 2006
Last updated in NPPES Apr 10, 2015
Taxonomy & licenses
204C00000X Sports Medicine (Neuromusculoskeletal Medicine) Physician Allopathic & Osteopathic Physicians · License 156672-1 (NY) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01822595 | Medicaid | NY | - |
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.
Frequently asked questions
Where does Gregory Max practice?
The practice location on file with NPPES is in Oswego, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gregory Max?
The National Provider Identifier (NPI) for Gregory Max is 1538138615, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-10.