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

Dr. Jeffrey John Grabenstein, MD

Individual provider Family Medicine Physician · NPI 1639277494

Dr. Jeffrey John Grabenstein, MD is a Family Practice in Oak Ridge, Tennessee. Graduated from Northwestern University Feinberg Medical School in 1980, 46 years ago. Practices with Family Doctors of Oak Ridge, PC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Tennessee.

Years since qualifying
46
Trained at
Northwestern University Feinberg Medical School
Licensed in
TN
In the registry since
2006
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

400 Laboratory Rd Ste 101
Oak Ridge, TN 37830-6808
Phone: (865) 482-1692
Fax: (865) 482-4070
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD0000030688 (TN)

Record details

NPI number1639277494
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESOctober 9, 2024
Certification dateOctober 9, 2024
Mailing address400 Laboratory Rd Ste 101, Oak Ridge, TN 37830-6808

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1980 (46 years in practice)
Group practice Family Doctors Of Oak Ridge, Pc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Oak Ridge