David R. Giammar, M.D.
Colon & Rectal Surgery Physician · Hilliard, OH
David R. Giammar, M.D. is a colon & rectal surgery physician with a practice address in Hilliard, Ohio, and NPI 1154307858, issued on Dec 15, 2005. Check the license (Ohio 35.077358, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- David R. Giammar
- Credential
- M.D.
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License numbers
- 35.077358 OH
4301102844 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3853 Trueman CT, Hilliard, OH 43026
- Phone
- (614) 210-2563
- Enumerated
- Dec 15, 2005
- Record last updated
- Apr 16, 2026
- Fax
- (614) 210-2563
- Medicare enrollment
- Enrolled (PECOS I20040813001144); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 123 in Ohio → Look up another NPI →
Also registered at 3853 Trueman CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David R. Giammar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.077358Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average colon & rectal surgery physician in 2024
207 Medicare Part D claims for 78 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 32 claims were for opioids.
Most prescribed
- Metronidazole23 claims
- Hydromorphone Hcl20 claims
- Ondansetron Odt16 claims
- Linzess13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $110.71
5 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 1,524 providers of this specialty with any payment received $3,468.16 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
- Jtdm Family Practice LLCSaint Marys, OH
- Ohio Specialty Physicians CorporationCanton, OH
- Prime Healthcare Foundation - Coshocton, LLCCoshocton, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David R. Giammar among 123 colon & rectal surgery physician records in Ohio
David R. Giammar, M.D. is one of 123 colon & rectal surgery physician records with a practice address in Ohio. 78% 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, 84% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1996 · median 2004 among the 82 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in Ohio
There are 123 colon & rectal surgery physician records in Ohio.
All 123 in Ohio → Every provider in Hilliard → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Joshua Braveman, M.D.Galena, OH 430211639151053
- David Reed, D.O.Dublin, OH 430171811198583
- Rami James Aoun, MDPowell, OH 430651366975096
- Aden Davis, MDPickerington, OH 431471104996693
- Lisa Cunningham, MDColumbus, OH 432031780021246
- Richard Wood, MDColumbus, OH 432051396131074
- Ellen Bailey, M.D.Columbus, OH 432131184867756
- Melinda Jack, M.D.Columbus, OH 432131760543177
Common questions
What is David R. Giammar, M.D.'s NPI number?
David R. Giammar, M.D.'s National Provider Identifier (NPI) is 1154307858, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David R. Giammar, M.D. located?
The NPPES record lists a practice address at 3853 Trueman CT, Hilliard, OH, 43026. Phone: (614) 210-2563. Providers update this record themselves, so call before visiting.
How can I verify David R. Giammar, M.D.'s license?
NPPES lists Ohio license number 35.077358, 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 David R. Giammar, M.D. prescribe under Medicare Part D?
In 2024, David R. Giammar, M.D. had 207 Medicare Part D claims for 78 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is David R. Giammar, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.