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

William A Heisel III, MD

Individual provider Internal Medicine Physician · NPI 1508819772

William A Heisel III, MD practises Internal Medicine in Fishers, Indiana. Graduated from University of Michigan Medical School in 1984, 42 years ago. Practices with Iu Health Medical Group, LLC, a 4,351-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
42
Trained at
University of Michigan Medical School
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.

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Practice location Address checks out

13100 E 136th St Ste 1200
Fishers, IN 46037-9417
Phone: (317) 678-3100
Fax: (317) 678-3108
Show map & directions

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

Additional practice locations (2)

  • 550 University Blvd # Uh3005, Indianapolis, IN 46202-5149 — (317) 962-8851
  • 1701 N Senate Blvd, Indianapolis, IN 46202-1239 — (888) 484-3258

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 01034463A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01034463A (IN)
Family Medicine Physician Taxonomy 207Q00000X · Licence 01034463A (IN)
Pediatrics Physician Taxonomy 208000000X · Licence 01034463A (IN)

Record details

NPI number1508819772
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 18, 2006
Last updated in NPPESMay 23, 2025
Certification dateMay 23, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1984 (42 years in practice)
Group practice Iu Health Medical Group, Llc — 4351 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 patients158
Services billed 565 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $96 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

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.

Other providers in Fishers