Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hari Krishnan Krishnan Nair

Hematology & Oncology Physician in Battle Creek, MI · enumerated 2016.

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

National Provider Identifier

1154773836

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Registry record

Entity type Individual (Type 1)

Name Hari Krishnan Krishnan Nair

Sex Male

Practice address 300 North Ave, Battle Creek, MI, 49017

Phone (269) 245-8660

Enumeration date Jul 6, 2016

Last updated in NPPES Sep 12, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 268503 (MA) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 4301509502 (MI) Primary

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 Hari Krishnan Krishnan Nair?

Hari Krishnan Krishnan Nair is registered in NPPES with the primary taxonomy of Hematology & Oncology 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 2023-09-12.