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

Lester L Himmelreich III, MD

Individual provider Internal Medicine Physician · NPI 1982699583

Lester L Himmelreich III, MD practises Internal Medicine in Mechanicsburg, Pennsylvania. Graduated from Hahnemann University College of Medicine in 1982, 44 years ago. Practices with Pinnacle Health Hospitalist Services LLC, a 179-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
44
Trained at
Hahnemann University College of Medicine
Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1995 Technology Pkwy
Mechanicsburg, PA 17050-8522
Phone: (717) 782-3380
Fax: (717) 782-5716
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 220 Wilson St, Carlisle, PA 17013-3650 — (717) 249-1929

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD029765E (PA)

Record details

NPI number1982699583
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2005
Last updated in NPPESJanuary 10, 2025
Certification dateJanuary 10, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolHAHNEMANN UNIVERSITY COLLEGE OF MEDICINE
Graduated 1982 (44 years in practice)
Group practice Pinnacle Health Hospitalist Services Llc — 179 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 patients162
Services billed 245 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.

Colleagues at Pinnacle Health Hospitalist Services LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 179 clinicians in the practice; 12 are shown here.

Other providers in Mechanicsburg