Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Mr. Benjamin Williams Diffenderfer, PA-C

Individual provider Physician Assistant · NPI 1679857239

Mr. Benjamin Williams Diffenderfer, PA-C is a Physician Assistant in Bel Air, Maryland. Qualified in 2011, 15 years ago. Practices with Agape Physical Therapy and Sports Rehabilitation LP, a 677-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
15
Licensed in
MD
In the registry since
2011
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

510 Uppr Chesapeake DR Ste 417 Physicians Pavillion II
Bel Air, MD 21014 Not confirmed with CMS for 15 years — call before visiting
Phone: (443) 643-3130
Fax: (443) 643-3155
Show map & directions

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

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence C0004567 (MD)

Record details

NPI number1679857239
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorYes
NPI enumeratedSeptember 30, 2011
Last updated in NPPESSeptember 30, 2011

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Agape Physical Therapy And Sports Rehabilitation Lp — 677 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 patients524
Services billed 25,418 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Honoraria $2,100 1 payment
Travel and Lodging $579 2 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $476 17 payments · a meal or drink at a meeting or visit, not a fee
Consulting Fee $175 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Agape Physical Therapy and Sports Rehabilitation LP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 677 clinicians in the practice; 12 are shown here.

Other providers in Bel Air