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

Dr. Michael C Willoughby, DO

Individual provider Internal Medicine Physician · NPI 1457589582

Dr. Michael C Willoughby, DO is a Cardiac Electrophysiology in Mount Clemens, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 2009, 17 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Michigan.

Years since qualifying
17
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
IL, MI
In the registry since
2009
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1000 Harrington St
Mount Clemens, MI 48043-2920
Phone: (586) 493-8000
Show map & directions

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

Additional practice locations (1)

  • 12251 S 80th Ave Ste 1520, Palos Heights, IL 60463-1290 — (708) 923-4200

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 036137782 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 5101018254 (MI)
Clinical Cardiac Electrophysiology Physician Taxonomy 207RC0001X · Licence 5101018254 (MI)

Record details

NPI number1457589582
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 27, 2009
Last updated in NPPESAugust 22, 2025
Certification dateAugust 22, 2025
Mailing address1000 Harrington St, Mount Clemens, MI 48043-2920

Medicare enrollment

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

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2009 (17 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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