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

Individual provider Internal Medicine Physician · NPI 1295718013

William Anthony Harrison, MD is an Internal Medicine in Cheyenne, Wyoming. Graduated from Creighton University School of Medicine in 1991, 35 years ago. Practices with Cheyenne Regional Physicians Group LLC, a 103-clinician group and accepts Medicare assignment. Licensed in Wyoming.

Years since qualifying
35
Trained at
Creighton University School of Medicine
Licensed in
WY
In the registry since
2005
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

800 E 20th St Ste 350
Cheyenne, WY 82001-3859
Phone: (307) 996-1560
Fax: (307) 996-1565
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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 5769A (WY)

Record details

NPI number1295718013
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 25, 2005
Last updated in NPPESNovember 8, 2022
Certification dateNovember 8, 2022
Mailing addressPo Box 20970, Cheyenne, WY 82003-7020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Cheyenne Regional Physicians Group Llc — 103 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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