NPPES file of Aug 9, 2026

Donald Ernest Greer

Family Nurse Practitioner · Michigan City, IN

Donald Ernest Greer is a family nurse practitioner with a practice address in Michigan City, Indiana, and NPI 1013606011, issued on May 4, 2023. Check the license (Indiana 28200905A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1013606011
Name
Donald Ernest Greer
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
28200905A IN
71015533A IN
Self-reported in NPPES; status is on the state search
Practice location
3500 Franciscan Way, Michigan City, IN 46360
Phone
(219) 879-8511
Enumerated
May 4, 2023
Record last updated
May 21, 2026
Medicare enrollment
Enrolled (PECOS I20240905000921); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3500 Franciscan Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Krista AdairFamily Nurse Practitioner1376232603
  2. Taylor Adrian, NPHospitalist Physician1811652431
  3. Katherine Afton, DPTPhysical Therapist1497303630
  4. Jennifer Ahlenius, RNRegistered Nurse1477351336
  5. Umair AhmedHospitalist Physician1134579402
  6. Gabrielle BecerraRegistered Nurse1467375915

Verify Donald Ernest Greer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana board licenses this profession
    Search for license 28200905A
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average family nurse practitioner in 2024

41 Medicare Part D claims for 25 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Donald Greer41
  2. Specialty average1,305

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $18.80

1 payment: food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Donald Greer$18.80
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Pulaski Memorial HospitalWinamac, IN · Critical Access Hospitals

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).

Donald Ernest Greer among 5,867 family nurse practitioner records in Indiana

Donald Ernest Greer is one of 5,867 family nurse practitioner records with a practice address in Indiana. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 81% of them.

  • NPI issued2023 · 81% of these records are older, 12% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2023 · median 2018 among the 3,953 with a school on file
  • Record last updated2026 · 33% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

67 family nurse practitioner records list a practice address in Michigan City

They are 67 of the 596 NPPES records with a practice address in Michigan City, and 5,867 family nurse practitioner records in Indiana.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Nicolette Alexander, NPMichigan City, IN 463601437347358
  2. Billie-Ann Black, DNPMichigan City, IN 463601508837782
  3. Rachel Fischer, NPMichigan City, IN 463601912992652
  4. Catherine Kaufman, FNPMichigan City, IN 463601619917812
  5. Christine Maddox, F.N.P.Michigan City, IN 463601063483642
  6. Diane Morrow, FNPMichigan City, IN 463601124112313
  7. Vicki Overmyer, FNPMichigan City, IN 463601356503189
  8. Carol ParksMichigan City, IN 463601013100775

Common questions

What is Donald Ernest Greer's NPI number?

Donald Ernest Greer's National Provider Identifier (NPI) is 1013606011, issued on May 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Donald Ernest Greer located?

The NPPES record lists a practice address at 3500 Franciscan Way, Michigan City, IN, 46360. Phone: (219) 879-8511. Providers update this record themselves, so call before visiting.

How can I verify Donald Ernest Greer's license?

NPPES lists Indiana license number 28200905A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.

How much does Donald Ernest Greer prescribe under Medicare Part D?

In 2024, Donald Ernest Greer had 41 Medicare Part D claims for 25 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.