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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ARTHUR DARRELL HAGAN M.D.
NPI 1811928021
Internal Medicine - Cardiovascular Disease in Stillwater, OK

Active since July 05, 2006
91.18/100
CMS Quality Rating
1323 W 6TH AVE STE 201, STILLWATER, OK 74074(405) 743-2354(405) 743-2950 Get Directions Write a Review

NPPES record last updated: August 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Arthur Darrell Hagan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ARTHUR DARRELL HAGAN M.D. (NPI 1811928021) is an individual cardiovascular disease provider in Stillwater, Oklahoma, licensed in Oklahoma (15022) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1811928021
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. ARTHUR DARRELL HAGANCredential: M.D.
Location Address1323 W 6TH AVE STE 201Stillwater, OK 74074-4306
Mailing AddressPo Box 720006Norman, OK 73070-4006 · (405) 743-2354 · Fax (405) 743-2950
Phone(405) 743-2354
Fax(405) 743-2950
Sole ProprietorYes
Enumeration DateJuly 5, 2006
Last NPPES UpdateAugust 2, 2026
NPPES CertifiedMarch 10, 2020
✔ NPI 1811928021 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in OK · 15022
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedSpecialistTaxonomy 174400000X · License 15022 (OK)
1323 W 6TH AVE STE 201, Stillwater, OK 74074
Open in Google Maps ↗

Other Identifiers 1

Medicaid100174340BOK

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality79.27
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SENTHIL NACHIMUTHU MD
Internal Medicine (Clinical Cardiac Electrophysiology)
1323 W 6TH AVE STE 201
STILLWATER, OK 74074
Payne County (405) 533-3010
DR. JAMES BRYAN HARRIS D.O.
Internal Medicine (Cardiovascular Disease)
1323 W 6TH AVE STE 201
STILLWATER, OK 74074
Payne County (405) 743-2354
MRS. KELSEY STROM HOFFMEISTER APRN
Nurse Practitioner (Family)
1323 W 6TH AVE STE 201
STILLWATER, OK 74074
Payne County (404) 533-3010
DR. SHYAM SUNDER POLUDASU M.D
Internal Medicine (Interventional Cardiology)
1323 W 6TH AVE STE 201
STILLWATER, OK 74074
Payne County (405) 533-3010
RAHMAH FIRDAUS HALL PA-C
Physician Assistant
1323 W 6TH AVE STE 201
STILLWATER, OK 74074
Payne County (405) 880-3388

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Arthur Hagan's NPI number?

The NPI number for Arthur Hagan is 1811928021. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Where is Arthur Hagan located?

Arthur Hagan practices at 1323 W 6th Ave Ste 201, Stillwater, OK 74074. The listed phone number is (405) 743-2354.

What is Arthur Hagan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

When was this NPI record last updated?

The NPPES record for Arthur Hagan was last updated on August 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.