Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary M Nelson, DO

Pediatrics Physician in Altus, OK · enumerated 2017.

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

National Provider Identifier

1134665797

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Mary M Nelson

Credential DO

Sex Female

Practice address 301 N 1st St Bldg 46, Altus, OK, 73523

Phone (580) 481-5623

Fax (580) 481-1321

Enumeration date Jan 6, 2017

Last updated in NPPES May 1, 2026

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License DO.2405 (AL) 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 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.

What specialty is Mary Nelson?

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

Other providers at this practice address

Browse all →

David Koles Optometrist · Altus Afb, OK NPI 1356324412 Jose Rodriguez Independent Duty Medical Technicians · Altus Afb, OK NPI 1699054288 Brian Welch Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Altus Afb, OK NPI 1467710269 Antonio Jones Clinical Social Worker · Altus Afb, OK NPI 1467706531 Jayson Stewart Social Worker · Altus Afb, OK NPI 1275977464 Christian Carroll Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Altus Afb, OK NPI 1760984108 Kendra James Clinical Social Worker · Altus Afb, OK NPI 1902367741 Barry Davenport Family Medicine Physician · Altus, OK NPI 1912468042

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-01.