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

Rex Keith Kessler, MD

Individual provider Internal Medicine Physician · NPI 1841298023

Rex Keith Kessler, MD is an Endocrinology in Aston, Pennsylvania. Graduated from Temple University School of Medicine in 1977, 49 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
49
Trained at
Temple University School of Medicine
Licensed in
PA
In the registry since
2005
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

2901 Dutton Mill Rd Ste 110
Aston, PA 19014-2849
Phone: (610) 876-2300
Fax: (610) 876-3004
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence MD 020904E (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD 020904E (PA)

Record details

NPI number1841298023
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 12, 2005
Last updated in NPPESJuly 26, 2026
Mailing addressPo Box 1897, Boothwyn, PA 19061-7897

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1977 (49 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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