NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alison Gruber, MD

Obstetrics & Gynecology Physician in New York, NY · enumerated 2020.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083243828

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Alison Gruber
Credential MD
Sex Female
Practice address 5141 Broadway, New York, NY, 10034
Phone (212) 932-4200
Enumeration date Apr 3, 2020
Last updated in NPPES Aug 17, 2024

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 329922 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Alison Gruber?
The National Provider Identifier (NPI) for Alison Gruber is 1083243828, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alison Gruber practice?
The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-17.