Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William John Markmann, MD

Individual provider Orthopaedic Surgery Physician · NPI 1912973660

William John Markmann, MD practises Orthopedic Surgery in Philadelphia, Pennsylvania. Graduated from Temple University School of Medicine in 1974, 52 years ago. Practices with Hr Physician Services, a 184-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
52
Trained at
Temple University School of Medicine
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

7500 Central Ave Ste 108
Philadelphia, PA 19111-2430 Not confirmed with CMS for 12 years — call before visiting
Phone: (215) 745-4050
Fax: (215) 745-9333
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence MD016702E (PA)

Record details

NPI number1912973660
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 23, 2006
Last updated in NPPESJune 26, 2014

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1974 (52 years in practice)
Group practice Hr Physician Services — 184 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients278
Services billed 3,420 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

  • Holy Redeemer Hospital And Medical Center Hospital · Meadowbrook, PA

Colleagues at Hr Physician Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 184 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia