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

John L Diedrich, MD

Individual provider Internal Medicine Physician · NPI 1114924610

John L Diedrich, MD is an Internal Medicine Physician in Petoskey, 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

560 W Mitchell St
Petoskey, MI 49770-2278
Phone: (231) 487-2460
Fax: (231) 487-6596
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 4301044782 (MI)

Record details

NPI number1114924610
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2005
Last updated in NPPESJuly 8, 2007

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