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

Individual provider Internal Medicine Physician · NPI 1386618817

John Ruffing, MD is an Internal Medicine in Tulsa, Oklahoma. Graduated from University of Utah School of Medicine in 1977, 49 years ago. Practices with Warren Clinic Inc, a 772-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oklahoma.

Years since qualifying
49
Trained at
University of Utah School of Medicine
Licensed in
OK
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

6600 S Yale Ave Ste 850
Tulsa, OK 74136-3381
Phone: (918) 481-7700
Fax: (918) 481-7701
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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 11824 (OK)

Record details

NPI number1386618817
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESMay 3, 2018
Mailing address6600 S Yale Ave, Ste 1400, Tulsa, OK 74136-3310

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF UTAH SCHOOL OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice Warren Clinic Inc — 772 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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