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

Erin Elizabeth Diem, FNP

Individual provider Registered Nurse · NPI 1588190755

Erin Elizabeth Diem, FNP is a Nurse Practitioner in Greensburg, Indiana. Qualified in 2017, 9 years ago. Practices with Medical Group of Indiana LLC, a 9-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Indiana and Kentucky.

Years since qualifying
9
Licensed in
IN, KY
In the registry since
2017
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

955 N Michigan Ave Ste 4
Greensburg, IN 47240-1487
Phone: (812) 662-6450
Show map & directions

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

Additional practice locations (1)

  • 720 N Lincoln St, Greensburg, IN 47240-1398 — (812) 655-1350

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 71007568A (IN)
Registered Nurse Taxonomy 163W00000X · Licence 1111959 (KY)

Record details

NPI number1588190755
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedMay 10, 2017
Last updated in NPPESMarch 24, 2026
Certification dateMarch 24, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Medical Group Of Indiana Llc — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients108
Services billed 152 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 $1,500 95 payments · a meal or drink at a meeting or visit, not a fee
Education $205 3 payments · educational material or training, 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 Medical Group of Indiana LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Greensburg