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

Michael J Larock, MD

Individual provider Internal Medicine Physician · NPI 1639138829

Michael J Larock, MD is a Hospitalist in Bryn Mawr, Pennsylvania. Graduated from Eastern Virginia Medical School in 1991, 35 years ago. Practices with Main Line Healthcare, a 1,153-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
35
Trained at
Eastern Virginia Medical School
Licensed in
PA
In the registry since
2006
Specialties on file
2
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

130 S Bryn Mawr Ave Ste H321
Bryn Mawr, PA 19010
Phone: (484) 337-4097
Fax: (484) 337-4082
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 1200 S Cedar Crest Blvd, Allentown, PA 18103-6202 — (610) 402-5369

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD051324L (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD051324L (PA)

Record details

NPI number1639138829
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 17, 2006
Last updated in NPPESJune 18, 2024
Certification dateJune 18, 2024

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolEASTERN VIRGINIA MEDICAL SCHOOL
Graduated 1991 (35 years in practice)
Group practice Main Line Healthcare — 1153 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients438
Services billed 955 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 Main Line Healthcare

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1153 clinicians in the practice; 12 are shown here.

Other providers in Bryn Mawr