Gary R. Griglione, MD
Gastroenterology Physician · Madison, WI
Gary R. Griglione, MD is a gastroenterology physician with a practice address in Madison, Wisconsin, and NPI 1013931203, issued on Jul 27, 2006. Check the license (Wisconsin 56101, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gary R. Griglione
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 56101 WI
036074917 IL
Self-reported in NPPES; status is on the state search - Practice location
- 202 S Park St, Madison, WI 53715
- Phone
- (608) 417-5454
- Enumerated
- Jul 27, 2006
- Record last updated
- Jan 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120312000449); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 202 S Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary R. Griglione in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 56101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average gastroenterology physician in 2024
98 Medicare Part D claims for 97 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Gavilyte-C82 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.
Bills Medicare through one group practice
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Wisconsin
There are 340 gastroenterology physician records in Wisconsin.
Other gastroenterology physician records in Wisconsin
- Frank Aberger, MDLa Crosse, WI1396748711
- Mohammad Abuassi, M.D.Milwaukee, WI1275211567
- Kwabena Adu-Gyamfi, MDGreen Bay, WI1154677391
- Aboud Affi, M.D.Milwaukee, WI1003891250
- Dilpesh Agrawal, M.D, MRCPMilwaukee, WI1407134422
- Awais Ahmed, MDOshkosh, WI1316213481
- Trupti Akella, M.D.New Berlin, WI1215321690
- Adebisi Alimi, M.D.Sheboygan, WI1649599317
- Jihad Aljabban, MD, MMSCMadison, WI1699304808
- Michael Allan, MDMadison, WI1558300822
Common questions
What is Gary R. Griglione, MD's NPI number?
Gary R. Griglione, MD's National Provider Identifier (NPI) is 1013931203, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary R. Griglione, MD located?
The NPPES record lists a practice address at 202 S Park St, Madison, WI, 53715. Phone: (608) 417-5454. Providers update this record themselves, so call before visiting.
How can I verify Gary R. Griglione, MD's license?
NPPES lists Wisconsin license number 56101, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary R. Griglione, MD prescribe under Medicare Part D?
In 2024, Gary R. Griglione, MD had 98 Medicare Part D claims for 97 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.