Robert D. Grimshaw, DO
Family Medicine Physician · Birch Run, MI
Robert D. Grimshaw, DO is a family medicine physician with a practice address in Birch Run, Michigan, and NPI 1174562912, issued on Jun 6, 2006. Check the license (Michigan 5101013846, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Robert D. Grimshaw
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 5101013846 MI
Self-reported in NPPES; status is on the state search - Practice location
- 8470 Main St, Birch Run, MI 48415
- Phone
- (989) 624-7001
- Enumerated
- Jun 6, 2006
- Record last updated
- Mar 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (989) 624-8993
- Medicaid ID
- 4532064 MI
- Medicare enrollment
- Enrolled (PECOS I20070430000408); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1998
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 8470 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lorraine Byers-Miller, O.D.Optometrist1619084712
- Megan DenningsPhysician Assistant1013625052
- Savannah Krall, ODOptometrist1730075532
- Courtney Moliterno, ODOptometrist1952663924
- Susan Perdue, ODOptometrist1386635050
Verify Robert D. Grimshaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101013846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average family medicine physician in 2024
8,563 Medicare Part D claims for 499 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 268 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium414 claims
- Atorvastatin Calcium388 claims
- Metformin Hcl366 claims
- Lisinopril361 claims
- Amlodipine Besylate315 claims
- Omeprazole277 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.
Industry payments in 2024: $226.97
12 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Covenant Medical Center IncSaginaw, MI
- Powerback Rehabilitation LLCFrankenmuth, MI
- Rau Physical Therapy IncFrankenmuth, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert D. Grimshaw among 6,013 family medicine physician records in Michigan
Robert D. Grimshaw, DO is one of 6,013 family medicine physician records with a practice address in Michigan. 75% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1998 · median 2008 among the 3,493 with a school on file
- Record last updated2021 · 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family medicine physician records list a practice address in Birch Run
They are 2 of the 69 NPPES records with a practice address in Birch Run, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Birch Run → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Shahrukh Hashmi, M.D.Birch Run, MI 484151497067664
- Robert Brengel, DOBrown City, MI 484161821089574
- Michael Digiovanni, M.D.Brown City, MI 484161801382858
- Olan Dombroske, DOBrown City, MI 484161568452811
- Daniel Kulick, DOBrown City, MI 484161720206600
- Kayla BatzerBad Axe, MI 484131801658588
- John Klosowski, DOBad Axe, MI 484131679868053
- Henry Kozdron, DOBad Axe, MI 484131295350692
Common questions
What is Robert D. Grimshaw, DO's NPI number?
Robert D. Grimshaw, DO's National Provider Identifier (NPI) is 1174562912, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert D. Grimshaw, DO located?
The NPPES record lists a practice address at 8470 Main St, Birch Run, MI, 48415. Phone: (989) 624-7001. Providers update this record themselves, so call before visiting.
How can I verify Robert D. Grimshaw, DO's license?
NPPES lists Michigan license number 5101013846, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert D. Grimshaw, DO prescribe under Medicare Part D?
In 2024, Robert D. Grimshaw, DO had 8,563 Medicare Part D claims for 499 beneficiaries; 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.