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

John Glen Frownfelter, MD

Individual provider Internal Medicine Physician · NPI 1548268626

John Glen Frownfelter, MD is an Internal Medicine Physician in Southfield, Michigan. Licensed in Michigan. Registered with an NPI since 2005.

Licensed in
MI
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

16001 W 9 Mile Rd Dept OF Internal Medicine
Southfield, MI 48075-4818
Phone: (248) 849-3152
Fax: (248) 849-3230
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301061866 (MI)

Record details

NPI number1548268626
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2005
Last updated in NPPESJuly 13, 2026

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