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

Dr. Karen A Thornburg, MD

Individual provider Internal Medicine Physician · NPI 1003938119

Dr. Karen A Thornburg, MD is an Internal Medicine in Muskegon, Michigan. Qualified in 2005, 21 years ago. Practices with Hackley Community Care Center Inc, an 18-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
21
Licensed in
MI
In the registry since
2007
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

2700 Baker St Fl 3
Muskegon, MI 49444
Phone: (231) 737-1335
Fax: (231) 737-0534
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2700 Baker St Fl 3, Muskegon, MI 49444 — (231) 737-1335

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301087767 (MI)

Record details

NPI number1003938119
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 6, 2007
Last updated in NPPESJanuary 2, 2022
Certification dateJanuary 2, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Hackley Community Care Center Inc — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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