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

Mark Adrain Kiefer, MD

Individual provider Surgery Physician · NPI 1992896567

Mark Adrain Kiefer, MD is a Colorectal Surgery (Proctology) in Tulsa, Oklahoma. Graduated from University of Tennessee, Hsc, College of Medicine in 2003, 23 years ago. Practices with St John Physicians, Inc, a 264-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
23
Trained at
University of Tennessee, Hsc, College of Medicine
Licensed in
OK
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

1705 E 19th St Ste 502
Tulsa, OK 74104-5416
Phone: (918) 748-7800
Fax: (918) 403-6349
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Colon & Rectal Surgery Physician (primary) Taxonomy 208C00000X · Licence 27205 (OK)
Surgery Physician Taxonomy 208600000X · Licence 27205 (OK)

Record details

NPI number1992896567
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 27, 2006
Last updated in NPPESOctober 2, 2020
Certification dateOctober 2, 2020
Mailing address1705 E 19th St Ste 502, Tulsa, OK 74104-5416

Medicare enrollment

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

Medicare specialtyCOLORECTAL SURGERY (PROCTOLOGY)
Medical schoolUNIVERSITY OF TENNESSEE, HSC, COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice St. John Physicians, Inc. — 264 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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