Michael J. Grupka, MD
Gastroenterology Physician · Hiram, GA
Michael J. Grupka, MD is a gastroenterology physician with a practice address in Hiram, Georgia, and NPI 1497953467, issued on Jul 10, 2007. Check the license (Georgia 060588, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael J. Grupka
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 060588 GA
Self-reported in NPPES; status is on the state search - Practice location
- 148 Bill Carruth Pkwy Ste 200, Hiram, GA 30141
- Phone
- (678) 741-5000
- Enumerated
- Jul 10, 2007
- Record last updated
- May 31, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (770) 445-9013
- Medicaid ID
- 483829670C GA
- Medicare enrollment
- Enrolled (PECOS I20091019000516); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 530 in Georgia → Look up another NPI →
Also registered at 148 Bill Carruth Pkwy Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Judy Oh, MDGastroenterology Physician1184840589
Verify Michael J. Grupka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 060588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average gastroenterology physician in 2024
964 Medicare Part D claims for 260 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Pantoprazole Sodium342 claims
- Famotidine85 claims
- Omeprazole82 claims
- Sucralfate52 claims
- Dicyclomine Hcl46 claims
- Linzess46 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 MIPS final score for 2023 (Medicare payment program): 92.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $185.65
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 one group practice
- Gastrointestinal Specialist OF GeorgiaHiram, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Grupka among 530 gastroenterology physician records in Georgia
Michael J. Grupka, MD is one of 530 gastroenterology physician records with a practice address in Georgia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 35% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2002 · median 2001 among the 397 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 gastroenterology physician records list a practice address in Hiram
They are 5 of the 392 NPPES records with a practice address in Hiram, and 530 gastroenterology physician records in Georgia.
All 530 in Georgia → Every provider in Hiram → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- David Finkelman, M.D.Hiram, GA 301411063485332
- Florence Hosseini Aslinia, MDHiram, GA 301411972611994
- Judy Oh, MDHiram, GA 301411184840589
- Philip Oppong-Twene, MDHiram, GA 301411497251474
- Frank Lopez, M.D.Jasper, GA 301431497759039
- Karl Mareth, MDJasper, GA 301431083061808
- Michael Perrino, MDJasper, GA 301431124118997
- Navinchandra Ruparelia, MDDouglasville, GA 301351043364862
Common questions
What is Michael J. Grupka, MD's NPI number?
Michael J. Grupka, MD's National Provider Identifier (NPI) is 1497953467, issued on Jul 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Grupka, MD located?
The NPPES record lists a practice address at 148 Bill Carruth Pkwy Ste 200, Hiram, GA, 30141. Phone: (678) 741-5000. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Grupka, MD's license?
NPPES lists Georgia license number 060588, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael J. Grupka, MD prescribe under Medicare Part D?
In 2024, Michael J. Grupka, MD had 964 Medicare Part D claims for 260 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael J. Grupka, MD's MIPS final score?
The 2023 MIPS final score is 92.9 of 100. 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.