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

Mark Byron Jennings, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1336379783

Mark Byron Jennings, MD is a Hematology/Oncology in Allen, Texas. Graduated from University of Oklahoma College of Medicine in 2009, 17 years ago. Practices with Oklahoma Cancer Specialists and Research Institute, LLC, a 48-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
17
Trained at
University of Oklahoma College of Medicine
Licensed in
TX
In the registry since
2009
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

1105 Central Expy N Ste 235
Allen, TX 75013-6135
Phone: (972) 747-6042
Fax: (972) 747-6043
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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 P1880 (TX)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1336379783
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2009
Last updated in NPPESSeptember 12, 2012
Mailing address1105 Central Expy N Ste 235, Allen, TX 75013-6135

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Oklahoma Cancer Specialists And Research Institute, Llc — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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