Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ashim Bari Hajra, M.D.

Hospitalist Physician in Oakland, CA · enumerated 2012.

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

National Provider Identifier

1730454182

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Registry record

Entity type Individual (Type 1)

Name Ashim Bari Hajra

Credential M.D.

Sex Male

Practice address 350 Hawthorne Ave, Room 2346, Oakland, CA, 94609

Phone (510) 869-6883

Fax (510) 869-6888

Enumeration date Mar 19, 2012

Last updated in NPPES May 12, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A123205 (CA) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A123205 (CA) Primary

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
A123205	Other	CA	STATE LICENSE

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 specialty is Ashim Hajra?

Ashim Hajra is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-12.