David Charles Grellmann, M.D.
Family Medicine Physician · Granger, IN
David Charles Grellmann, M.D. is a family medicine physician with a practice address in Granger, Indiana, and NPI 1205824570, issued on Oct 11, 2005. Check the license (Indiana 01052373A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- David Charles Grellmann
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01052373A IN
Self-reported in NPPES; status is on the state search - Practice location
- 6913 N Main St, Granger, IN 46530
- Phone
- (574) 647-1500
- Enumerated
- Oct 11, 2005
- Record last updated
- Apr 28, 2023
- Fax
- (574) 243-4306
- Medicaid ID
- 200264590 IN
- Medicare enrollment
- Enrolled (PECOS I20070423000110); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 6913 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Davis, M.D.Pediatrics Physician1326070236
- Dennis Erdman, MDEmergency Medicine Physician1710064241
- Tracy Ford, FNPFamily Nurse Practitioner1376925891
- Barbara Glassford, NP-CFamily Nurse Practitioner1891207320
- Sara GoldenFamily Nurse Practitioner1114378635
- Shelly Harkins, MDFamily Medicine Physician1922093871
Verify David Charles Grellmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01052373ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
12 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
David Charles Grellmann among 3,506 family medicine physician records in Indiana
David Charles Grellmann, M.D. is one of 3,506 family medicine physician records with a practice address in Indiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1982 · median 2005 among the 2,196 with a school on file
- Record last updated2023 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 family medicine physician records list a practice address in Granger
They are 39 of the 395 NPPES records with a practice address in Granger, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in Granger → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brian Carter, MDGranger, IN 465301366432429
- Joseph Cerbin, MDGranger, IN 465301134119225
- Matthew Christ, MDGranger, IN 465301437149952
- Scott Eshowsky, M.D.Granger, IN 465301285622373
- Shelly Harkins, MDGranger, IN 465301922093871
- Suping Hsieh, MDGranger, IN 465301972593408
- Carol Mann, MDGranger, IN 465301487644175
- Robert Oppman, MDGranger, IN 465301720078256
Common questions
What is David Charles Grellmann, M.D.'s NPI number?
David Charles Grellmann, M.D.'s National Provider Identifier (NPI) is 1205824570, issued on Oct 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Charles Grellmann, M.D. located?
The NPPES record lists a practice address at 6913 N Main St, Granger, IN, 46530. Phone: (574) 647-1500. Providers update this record themselves, so call before visiting.
How can I verify David Charles Grellmann, M.D.'s license?
NPPES lists Indiana license number 01052373A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Charles Grellmann, M.D. prescribe under Medicare Part D?
In 2024, David Charles Grellmann, M.D. had 12 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.