Gregory Richard Grotz, M.D.
Diagnostic Radiology Physician · Belfast, ME
Gregory Richard Grotz, M.D. is a diagnostic radiology physician with a practice address in Belfast, Maine, and NPI 1033189105, issued on Jan 23, 2006. Check the license (Maine MD18651, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory Richard Grotz
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- MD18651 ME
32391 IA
063098176 IL
40136020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 118 Northport Ave, Belfast, ME 04915
- Phone
- (207) 784-2554
- Enumerated
- Jan 23, 2006
- Record last updated
- Mar 31, 2022
- Fax
- (207) 777-1439
- Medicaid IDs
- 1033189105 ME
2175521 IA - Medicare enrollment
- Enrolled (PECOS I20130128000056); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 182 in Maine → Look up another NPI →
Also registered at 118 Northport Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Adler, MOT, OTR/LOccupational Therapist1144787839
- David Arnold, D.O.Anesthesiology Physician1710192786
- Jessica Austin, M.A., CCC-SLPSpeech-Language Pathologist1194035543
- Arpita Badami, MDAnesthesiology Physician1144323379
- Katelynn BagleyPediatric Occupational Therapist1801768981
- Michael Barnes Lopez, M.A.Audiologist1477717304
Verify Gregory Richard Grotz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD18651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.1 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).
Bills Medicare through 2 group practices
- Belfast Bay RadiologyFarmington, ME
- New England Radiological Consortium LLCFreeport, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Richard Grotz among 182 diagnostic radiology physician records in Maine
Gregory Richard Grotz, M.D. is one of 182 diagnostic radiology physician records with a practice address in Maine. 66% 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 25% of them.
- NPI issued2006 · 25% of these records are older, 35% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1992 · median 2003 among the 111 with a school on file
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Maine
There are 182 diagnostic radiology physician records in Maine.
All 182 in Maine → Every provider in Belfast → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- John Jones, M.D.Belfast, ME 049151508862574
- Nancy Webb, M.D.Belfast, ME 049151962553008
- Paul Gagliardi, M.D.Waterville, ME 049011881671667
- Jonathan Hallenbeck, M.D.Waterville, ME 049011760469563
- Johannes Jordaan, M.D.Waterville, ME 049011992782759
- Zaki Nashed, M.D.Waterville, ME 049011609856665
- Robin Wood, M.D.Waterville, ME 049011083691869
- Byung Kim, M.D.Farmington, ME 049381942295258
Common questions
What is Gregory Richard Grotz, M.D.'s NPI number?
Gregory Richard Grotz, M.D.'s National Provider Identifier (NPI) is 1033189105, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Richard Grotz, M.D. located?
The NPPES record lists a practice address at 118 Northport Ave, Belfast, ME, 04915. Phone: (207) 784-2554. Providers update this record themselves, so call before visiting.
How can I verify Gregory Richard Grotz, M.D.'s license?
NPPES lists Maine license number MD18651, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Gregory Richard Grotz, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 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.