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

Christopher J. Mason, MD

Individual provider Internal Medicine Physician · NPI 1245396621

Christopher J. Mason, MD practises Anesthesiology in Philadelphia, Pennsylvania. Graduated from Temple University School of Medicine in 2006, 20 years ago. Practices with University of Penn-Medical Group, a 3,401-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
20
Trained at
Temple University School of Medicine
Licensed in
PA
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

3400 Spruce Street 4 Dulles
Philadelphia, PA 19104-4206 Not confirmed with CMS for 14 years — call before visiting
Phone: (215) 349-8310
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD438577 (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MT188003 (PA)

Record details

NPI number1245396621
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 29, 2006
Last updated in NPPESJuly 10, 2012

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice University Of Penn-Medical Group — 3401 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations11 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients200
Services billed 233 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University of Penn-Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3401 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia