John K. Grimm, D.O.
Internal Medicine Physician · Harrison, OH
John K. Grimm, D.O. is an internal medicine physician with a practice address in Harrison, Ohio, and NPI 1912949918, issued on Jun 12, 2006. Check the license (Ohio 34005816, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- John K. Grimm
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 34005816 OH
Self-reported in NPPES; status is on the state search - Practice location
- 10450 New Haven RD, Harrison, OH 45030
- Phone
- (513) 921-4227
- Enumerated
- Jun 12, 2006
- Record last updated
- Nov 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (513) 367-8031
- Medicaid ID
- 0250437 OH
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 10450 New Haven RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Breidenstein, D.O.Family Medicine Physician1972559227
- Stephanie Broughton, M.D.Family Medicine Physician1508811951
- Regina Cano, M.D.Family Medicine Physician1790051506
- Hillary Chang, M.D.Pediatrics Physician1174727135
- Lester Dornon, MDFamily Medicine Physician1265435788
- Lisa Lengerich, CNPFamily Nurse Practitioner1194319889
Verify John K. Grimm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34005816Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,188 Medicare Part D claims for 482 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium206 claims
- Lisinopril149 claims
- Amlodipine Besylate117 claims
- Metformin Hcl94 claims
- Levothyroxine Sodium87 claims
- Simvastatin83 claims
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.
John K. Grimm among 5,277 internal medicine physician records in Ohio
John K. Grimm, D.O. is one of 5,277 internal medicine physician records with a practice address in Ohio. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 internal medicine physician records list a practice address in Harrison
They are 3 of the 205 NPPES records with a practice address in Harrison, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Harrison → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jane Blinzler, MDHarrison, OH 450301104822741
- Amy Schwartz, MDHarrison, OH 450301851513014
- Jeffrey Armitage, M.D.Lebanon, OH 450361932191137
- Deann Brewer, M.D.Lebanon, OH 450361174688709
- Ann Declue, M.D.Lebanon, OH 450361790879633
- Steven Grendel, M.D.Lebanon, OH 450361255323192
- Robert Grischy, M.D.Lebanon, OH 450361609878057
- Samia Kanooz, MDLebanon, OH 450361144486515
Common questions
What is John K. Grimm, D.O.'s NPI number?
John K. Grimm, D.O.'s National Provider Identifier (NPI) is 1912949918, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John K. Grimm, D.O. located?
The NPPES record lists a practice address at 10450 New Haven RD, Harrison, OH, 45030. Phone: (513) 921-4227. Providers update this record themselves, so call before visiting.
How can I verify John K. Grimm, D.O.'s license?
NPPES lists Ohio license number 34005816, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John K. Grimm, D.O. prescribe under Medicare Part D?
In 2024, John K. Grimm, D.O. had 2,188 Medicare Part D claims for 482 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.