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

Sean Longson

Individual provider Internal Medicine Physician · NPI 1902482037

Sean Longson practises Internal Medicine in Philadelphia, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 2021, 5 years ago. Practices with Abington Memorial Hospital, a 435-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
5
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2021
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Practice location Address checks out

4190 City Ave
Philadelphia, PA 19131-1626
Phone: (215) 871-6646
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1200 Old York Rd Ste 2b, Abington, PA 19001-3720 — (215) 481-2222

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence OS023793 (PA)

Record details

NPI number1902482037
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 19, 2021
Last updated in NPPESJuly 3, 2024
Certification dateJuly 3, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2021 (5 years in practice)
Group practice Abington Memorial Hospital — 435 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Mastectomy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients203
Services billed 535 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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. Those with a page here are linked.

Colleagues at Abington Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 435 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia