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

Dr. Michael W. Brennan, MD

Individual provider Cardiovascular Disease Physician · NPI 1619903705

Dr. Michael W. Brennan, MD is an Interventional Cardiology in Sheridan, Wyoming. Graduated from University of Oklahoma College of Medicine in 1984, 42 years ago. Practices with Big Horn Health Network, a 82-clinician group and accepts Medicare assignment. Licensed in Montana and Wyoming.

Years since qualifying
42
Trained at
University of Oklahoma College of Medicine
Licensed in
MT, WY
In the registry since
2006
Specialties on file
2
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

1333 W 5th St Ste 103
Sheridan, WY 82801-2752
Phone: (307) 675-4610
Fax: (307) 675-4615
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 4505A (WY)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 6651 (MT)

Record details

NPI number1619903705
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 23, 2006
Last updated in NPPESApril 8, 2021
Certification dateApril 8, 2021
Mailing address1333 W 5th St Ste 110, Sheridan, WY 82801-2752

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL CARDIOLOGY
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Big Horn Health Network — 82 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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