NPPES file of Aug 9, 2026

Eugene William St. Clair, M.D.

Rheumatology Physician · Durham, NC

Eugene William St. Clair, M.D. is a rheumatology physician with a practice address in Durham, North Carolina, and NPI 1851475727, issued on Oct 25, 2006. Check the license (North Carolina 26377, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851475727
Name
Eugene William St. Clair
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
26377 NC
Self-reported in NPPES; status is on the state search
Practice location
2100 Erwin RD, Durham, NC 27710
Phone
(919) 684-8111
Enumerated
Oct 25, 2006
Record last updated
Mar 10, 2008 (not updated in 18 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080320000272); accepts Medicare assignment
Medical or professional school
West Virginia University School Of Medicine, 1980
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest rheumatology physician records → All 234 in North Carolina → Look up another NPI →

Also registered at 2100 Erwin RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Deanna Adkins, M.D.Pediatrics Physician1942359955
  2. Nicolas Aeschlimann, M.D.Anesthesiology Physician1003063116
  3. Mary AffrontiNurse Practitioner1437318300
  4. Sana Alkhatib, M.D.Cardiovascular Disease Physician1336223247
  5. Diane AllenSurgery Physician1184708885
  6. James Alspaugh, M.D.Infectious Disease Physician1851440861

Verify Eugene William St. Clair in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNorth Carolina Medical Board
    Search for license 26377    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the North Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

1% more Medicare Part D claims than the average rheumatology physician in 2024

1,998 Medicare Part D claims for 305 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 49 claims were for opioids.

  1. Eugene St. Clair1,998
  2. Specialty average1,978

Most prescribed

  1. Prednisone291 claims
  2. Methotrexate222 claims
  3. Hydroxychloroquine Sulfate221 claims
  4. Leflunomide71 claims
  5. Allopurinol64 claims
  6. Humira(Cf) Pen46 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.

Industry payments in 2024: $562.68

1 payment: consulting fee; the largest payer was ModernaTX, Inc. 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.

  1. Eugene St. Clair$562.68
  2. Specialty average$8,538.33

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

  1. Duke Health Integrated Practice IncBurlington, NC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Eugene William St. Clair among 234 rheumatology physician records in North Carolina

Eugene William St. Clair, M.D. is one of 234 rheumatology physician records with a practice address in North Carolina. 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 2006, is newer than 18% of them.

  • NPI issued2006 · 18% of these records are older, 50% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1980 · median 2005 among the 158 with a school on file
  • Record last updated2008 · 55% 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 North 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 North Carolina

There are 234 rheumatology physician records in North Carolina.

All 234 in North Carolina → Every provider in Durham → Rheumatology Physician nationwide →

The 8 rheumatology physician records with the nearest ZIP codes

  1. Nancy Allen, MDDurham, NC 277101700834934
  2. David Caldwell, MDDurham, NC 277101982787123
  3. Megan ClowseDurham, NC 277101063595213
  4. Lisa Criscione-Schreiber, M.D.Durham, NC 277101902988181
  5. Jayanth Doss, M.D.Durham, NC 277101699936302
  6. Mary DriebeekDurham, NC 277101144304056
  7. Barton Haynes, M.D.Durham, NC 277101427107432
  8. Virginia KrausDurham, NC 277101013091172

Common questions

What is Eugene William St. Clair, M.D.'s NPI number?

Eugene William St. Clair, M.D.'s National Provider Identifier (NPI) is 1851475727, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Eugene William St. Clair, M.D. located?

The NPPES record lists a practice address at 2100 Erwin RD, Durham, NC, 27710. Phone: (919) 684-8111. Providers update this record themselves, so call before visiting.

How can I verify Eugene William St. Clair, M.D.'s license?

NPPES lists North Carolina license number 26377, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Eugene William St. Clair, M.D. prescribe under Medicare Part D?

In 2024, Eugene William St. Clair, M.D. had 1,998 Medicare Part D claims for 305 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.