Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dipak Balaji Ramkumar, M.D.

Surgical Oncology Physician in Phoenix, AZ · enumerated 2013.

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

National Provider Identifier

1639412976

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Registry record

Entity type Individual (Type 1)

Name Dipak Balaji Ramkumar

Credential M.D.

Sex Male

Practice address 500 W Thomas Rd Ste 800, Phoenix, AZ, 85013

Phone (602) 406-1234

Fax (602) 406-6368

Enumeration date Apr 5, 2013

Last updated in NPPES Sep 9, 2025

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 74223 (AZ) Primary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 74223 (AZ) Secondary

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.

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Frequently asked questions

How do I verify Dipak Ramkumar's NPI record?

Cross-check NPI 1639412976 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639412976 active?

Yes — as of the latest NPPES snapshot, NPI 1639412976 is active (record last updated 2025-09-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-09.