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

Matthew Kelleher

Individual provider Hospitalist Physician · NPI 1922148881

Matthew Kelleher is a Hospitalist in Williamsport, Pennsylvania. Graduated from University of Massachusetts Medical School in 2004, 22 years ago. Practices with Susquehanna Physician Services, a 612-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
22
Trained at
University of Massachusetts Medical School
Licensed in
PA
In the registry since
2007
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Practice location Address checks out

700 High St
Williamsport, PA 17701-3100
Phone: (570) 321-2850
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD434113 (PA)

Record details

NPI number1922148881
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedFebruary 7, 2007
Last updated in NPPESSeptember 1, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2004 (22 years in practice)
Group practice Susquehanna Physician Services — 612 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 patients77
Services billed 77 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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 Susquehanna Physician Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 612 clinicians in the practice; 12 are shown here.

Other providers in Williamsport