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

Douglas Harley Slater, MD

Individual provider Internal Medicine Physician · NPI 1134152382

Douglas Harley Slater, MD is a Hospitalist in Grayling, Michigan. Graduated from Michigan State University College of Human Medicine in 1986, 40 years ago. Practices with Grand Traverse Physician Services PC, a 123-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
40
Trained at
Michigan State University College of Human Medicine
Licensed in
MI
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

1250 E Michigan Ave
Grayling, MI 49738-7074
Phone: (989) 348-0550
Fax: (989) 348-6749
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 4301406865 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301406865 (MI)

Record details

NPI number1134152382
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 9, 2006
Last updated in NPPESAugust 23, 2007

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesPEDIATRIC MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1986 (40 years in practice)
Group practice Grand Traverse Physician Services Pc — 123 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Grayling