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

Patrick Callaghan, DO

Individual provider Internal Medicine Physician · NPI 1225563489

Patrick Callaghan, DO practises Internal Medicine in Allentown, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 2017, 9 years ago. Practices with St Lukes Physician Group Inc, a 2,127-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
9
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2017
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1736 Hamilton St
Allentown, PA 18104-5656
Phone: (484) 526-6643
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence OS020685 (PA)

Record details

NPI number1225563489
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedApril 25, 2017
Last updated in NPPESAugust 11, 2025
Certification dateAugust 11, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2017 (9 years in practice)
Group practice St Lukes Physician Group Inc — 2127 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 patients298
Services billed 718 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 St Lukes Physician Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2127 clinicians in the practice; 12 are shown here.

Other providers in Allentown