Timothy R. Grigsby, M.D.
Family Medicine Physician · Mason, OH
Timothy R. Grigsby, M.D. is a family medicine physician with a practice address in Mason, Ohio, and NPI 1700851680, issued on Feb 22, 2006. Check the license (Ohio 35070992, as entered in NPPES) on the State Medical Board of Ohio; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Timothy R. Grigsby
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 35070992 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4201 Aero Dr, Mason, OH 45040
- Phone
- (513) 770-4122
- Enumerated
- Feb 22, 2006
- Record last updated
- Mar 17, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (513) 459-9468
- Medicaid ID
- 2159480 OH
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 4201 Aero Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindsay Fisher, APRNFamily Nurse Practitioner1194335521
- Shannon Grubb, M.D.Family Medicine Physician1427040534
- Kandice McAlpine, PA-CPhysician Assistant1437812500
Verify Timothy R. Grigsby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35070992Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Timothy R. Grigsby among 5,606 family medicine physician records in Ohio
Timothy R. Grigsby, M.D. is one of 5,606 family medicine physician records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 48% newer
- In a Medicare fileNo · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2014 · 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 207Q00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 family medicine physician records list a practice address in Mason
They are 42 of the 1,495 NPPES records with a practice address in Mason, and 5,606 family medicine physician records in Ohio. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,606 in Ohio → Every provider in Mason → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dale Block, MDMason, OH 450401174505119
- Samia Eid, MDMason, OH 450401023071453
- Timothy Geering, MDMason, OH 450401265495048
- William Gluntz, MDMason, OH 450401588628879
- Shannon Grubb, M.D.Mason, OH 450401427040534
- Brian Hoffman, MDMason, OH 450401699756924
- Charles Humphries, M. D.Mason, OH 450401750367983
- Martin Lehenbauer, MDMason, OH 450401497736714
Common questions
What is Timothy R. Grigsby, M.D.'s NPI number?
Timothy R. Grigsby, M.D.'s National Provider Identifier (NPI) is 1700851680, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy R. Grigsby, M.D. located?
The NPPES record lists a practice address at 4201 Aero Dr, Mason, OH, 45040. Phone: (513) 770-4122. Providers update this record themselves, so call before visiting.
How can I verify Timothy R. Grigsby, M.D.'s license?
NPPES lists Ohio license number 35070992, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.