Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Obrien, MD

Individual provider Internal Medicine Physician · NPI 1578524963

William Obrien, MD is an Internal Medicine in Broken Arrow, Oklahoma. Qualified in 1996, 30 years ago. Practices with Clinton J Baird PLC, a 15-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
30
Licensed in
OK
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1129 S Aspen Ave
Broken Arrow, OK 74012-4859
Phone: (918) 251-8900
Fax: (918) 293-3169
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20338 (OK)

Record details

NPI number1578524963
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2006
Last updated in NPPESOctober 29, 2007
Mailing address1129 S Aspen Ave, Broken Arrow, OK 74012-4859

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPSYCHIATRY
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Clinton J Baird Plc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Broken Arrow