Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron K Armstrong, D.O.

Obstetrics & Gynecology Physician in Oklahoma City, OK · enumerated 2010.

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

National Provider Identifier

1669783361

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Registry record

Entity type Individual (Type 1)

Name Aaron K Armstrong

Credential D.O.

Sex Male

Practice address 11200 N Portland Ave, Oklahoma City, OK, 73120

Phone (405) 936-1000

Fax (405) 936-1001

Enumeration date Jun 28, 2010

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 5498 (OK) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Is NPI 1669783361 active?

Yes, as of the latest NPPES snapshot, NPI 1669783361 is active (record last updated 2022-07-21).

How do I verify Aaron Armstrong's NPI record?

Cross-check NPI 1669783361 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.