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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John A. Robertson, M.D.

Family Medicine Physician in Oklahoma City, OK · enumerated 2006.

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

National Provider Identifier

1821059478

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Registry record

Entity type Individual (Type 1)
Name Dr. John A. Robertson
Credential M.D.
Sex Male
Practice address 700 24th Ave, Nw, Oklahoma City, OK, 73069
Phone (405) 364-0555
Fax (405) 573-5464
Enumeration date Mar 31, 2006
Last updated in NPPES Mar 15, 2018

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25018 (OK) 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.

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Frequently asked questions

How do I verify John Robertson's NPI record?
Cross-check NPI 1821059478 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1821059478 active?
Yes, as of the latest NPPES snapshot, NPI 1821059478 is active (record last updated 2018-03-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-15.