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

John C Grotberg, MD

Individual provider Internal Medicine Physician · NPI 1659865079

John C Grotberg, MD is registered under Pulmonary Disease in Indianapolis, Indiana. Qualified in 2018, 8 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 and Missouri.

Years since qualifying
8
Licensed in
IN, MO
In the registry since
2018
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

1701 Senate Blvd
Indianapolis, IN 46202-1239
Phone: (317) 962-5820
Fax: (317) 962-3916
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003 — (314) 454-8763
  • 3015 N Ballas Rd, Saint Louis, MO 63131-2329 — (314) 996-5000

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 01093052A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01093052A (IN)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 01093052A (IN)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 2022034948 (MO)

Record details

NPI number1659865079
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 19, 2018
Last updated in NPPESMarch 12, 2025
Certification dateMarch 12, 2025

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 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 patients35
Services billed 55 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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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