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

Gregory Keith Riffle, DO

Individual provider Internal Medicine Physician · NPI 1427398429

Gregory Keith Riffle, DO is an Internal Medicine in Lancaster, Ohio. Graduated from Ohio University, College of Osteopathic Medicine in 2013, 13 years ago. Practices with Fairfield Healthcare Professionals Inc, a 146-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
13
Trained at
Ohio University, College of Osteopathic Medicine
Licensed in
OH
In the registry since
2013
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

135 N Ewing St Ste 305
Lancaster, OH 43130-3382
Phone: (740) 681-9447
Fax: (740) 681-9966
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 34011676 (OH)

Record details

NPI number1427398429
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedFebruary 27, 2013
Last updated in NPPESAugust 4, 2016
Mailing address135 N Ewing St, Suite 305, Lancaster, OH 43130-3382

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOHIO UNIVERSITY, COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2013 (13 years in practice)
Group practice Fairfield Healthcare Professionals Inc — 146 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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