Gregory W. Niemer, M.D.
Rheumatology Physician · Summerville, SC
Gregory W. Niemer, M.D. is a rheumatology physician with a practice address in Summerville, South Carolina, and NPI 1356449367, issued on Sep 21, 2006. Check the license (South Carolina 18631, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory W. Niemer
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 18631 SC
Self-reported in NPPES; status is on the state search - Practice location
- 2001 2ND Ave Ste 201, Summerville, SC 29486
- Phone
- (843) 572-4840
- Enumerated
- Sep 21, 2006
- Record last updated
- Jul 7, 2026
- Fax
- (843) 793-6171
- Medicare enrollment
- Enrolled (PECOS I20111109000008); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 128 in South Carolina → Look up another NPI →
Also registered at 2001 2ND Ave Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Durga Adhikari, MDRheumatology Physician1538319074
- Danielle BazemorePhysician Assistant1528662368
- Haley Bouchard, PA-CPhysician Assistant1588119259
- Bradley Collins, DORheumatology Physician1326533308
- Colin Edgerton, MDRheumatology Physician1245307578
- William Edwards, M.D.Rheumatology Physician1952409997
Verify Gregory W. Niemer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 18631Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% more Medicare Part D claims than the average rheumatology physician in 2024
3,000 Medicare Part D claims for 467 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 91 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate572 claims
- Methotrexate357 claims
- Prednisone312 claims
- Leflunomide135 claims
- Meloxicam107 claims
- Allopurinol98 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): 96.1 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).
Industry payments in 2024: $125,945.60
157 payments; by number, the most common kind was food and beverage; the largest payer was American Rheumatology Network, LLC. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Articularis Healthcare Group IncSummerville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory W. Niemer among 128 rheumatology physician records in South Carolina
Gregory W. Niemer, M.D. is one of 128 rheumatology physician records with a practice address in South Carolina. 88% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 54% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1995 · median 2008 among the 90 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in South Carolina
There are 128 rheumatology physician records in South Carolina.
All 128 in South Carolina → Every provider in Summerville → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Durga Adhikari, MDSummerville, SC 294861538319074
- Bradley Collins, DOSummerville, SC 294861326533308
- Colin Edgerton, MDSummerville, SC 294861245307578
- William Edwards, M.D.Summerville, SC 294861952409997
- Gary Fink, M.D.Summerville, SC 294861699873885
- Nicholas Holdgate, M.D.Summerville, SC 294861134415110
- Clarence Legerton, M.D.Summerville, SC 294861285732214
- Jennifer Murphy, M.D.Summerville, SC 294861639149461
Common questions
What is Gregory W. Niemer, M.D.'s NPI number?
Gregory W. Niemer, M.D.'s National Provider Identifier (NPI) is 1356449367, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory W. Niemer, M.D. located?
The NPPES record lists a practice address at 2001 2ND Ave Ste 201, Summerville, SC, 29486. Phone: (843) 572-4840. Providers update this record themselves, so call before visiting.
How can I verify Gregory W. Niemer, M.D.'s license?
NPPES lists South Carolina license number 18631, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory W. Niemer, M.D. prescribe under Medicare Part D?
In 2024, Gregory W. Niemer, M.D. had 3,000 Medicare Part D claims for 467 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Gregory W. Niemer, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.1 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.