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

Patrick J Loehrer Sr., MD

Individual provider Internal Medicine Physician · NPI 1245296847

Patrick J Loehrer Sr., MD practises Medical Oncology in Indianapolis, Indiana. Qualified in 1978, 48 years ago. Practices with Iu Health Medical Group, LLC, a 4,351-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Indiana.

Years since qualifying
48
Licensed in
IN
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

535 Barnhill Dr Rt 448
Indianapolis, IN 46202-5116
Phone: (317) 278-7418
Show map & directions

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

Additional practice locations (1)

  • 1701 N Senate Blvd, Indianapolis, IN 46202-1239 — (888) 484-3258

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 01030846A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01030846A (IN)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 01030846 (IN)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 01030846A (IN)

Record details

NPI number1245296847
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 22, 2006
Last updated in NPPESMarch 25, 2025
Certification dateMarch 25, 2025

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Medical schoolOTHER
Graduated 1978 (48 years in practice)
Group practice Iu Health Medical Group, Llc — 4351 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients82
Services billed 171 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 Iu Health Medical Group, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4351 clinicians in the practice; 12 are shown here.

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