NPPES file of Aug 9, 2026

William R. Blair, D.O.

Family Medicine Physician · Swansea, MA

William R. Blair, D.O. is a family medicine physician with a practice address in Swansea, Massachusetts, and NPI 1629428644, issued on Jun 21, 2016. Check the license (Massachusetts 279139, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; 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
1629428644
Name
William R. Blair
Credential
D.O.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
279139 MA
DO00962 RI
Self-reported in NPPES; status is on the state search
Practice location
479 Swansea Mall Dr, Swansea, MA 02777
Phone
(508) 973-1570
Enumerated
Jun 21, 2016
Record last updated
Oct 18, 2024
Fax
(508) 973-1545
Medicare enrollment
Enrolled (PECOS I20190814001327); accepts Medicare assignment
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

Also registered at 479 Swansea Mall Dr

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

  1. Katherine Benevides, NPNurse Practitioner1033179452
  2. Shawn Blankenship, PT, DPTPhysical Therapist1801322805
  3. Brittany Braga, NPFamily Nurse Practitioner1942937917
  4. Jenna Carchedi, DPTPhysical Therapist1164815700
  5. Brian Costa, FNPNurse Practitioner1144774522
  6. Paul Faria, PTPhysical Therapist1033503933

Verify William R. Blair in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 279139
    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 Massachusetts 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.

2.6 times the Medicare Part D claims of the average family medicine physician in 2024

9,313 Medicare Part D claims for 833 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 462 claims were for opioids.

  1. William Blair9,313
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium470 claims
  2. Lisinopril385 claims
  3. Amlodipine Besylate314 claims
  4. Levothyroxine Sodium274 claims
  5. Omeprazole273 claims
  6. Losartan Potassium230 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: $16.66

1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Blair$16.66
  2. Specialty average$902.55

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. Southcoast Physicians Group IncSwansea, MA

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

12 family medicine physician records list a practice address in Swansea

They are 12 of the 351 NPPES records with a practice address in Swansea, and 2,265 family medicine physician records in Massachusetts.

Other family medicine physician records in Massachusetts

  1. Salah Abass, M.D.Methuen, MA1417959776
  2. Majed Abbas, MDLowell, MA1346827870
  3. Sheila Abdallah, MDWorcester, MA1821356312
  4. Omar Abduljabar, M.D.Springfield, MA1770978843
  5. Jonathan Abel, DOSpringfield, MA1700897196
  6. Mohamed Abib, MDSturbridge, MA1639281090
  7. Kevin Abraham, M.D.Worcester, MA1689037673
  8. Janet Abrahamian, M.D.West Boylston, MA1932156627
  9. John Abramson, M.D.Ipswich, MA1275613903
  10. John Paul Abroguena, MDPlainville, MA1235361080

Common questions

What is William R. Blair, D.O.'s NPI number?

William R. Blair, D.O.'s National Provider Identifier (NPI) is 1629428644, issued on Jun 21, 2016. An NPI identifies a provider in billing; it is not a license.

Where is William R. Blair, D.O. located?

The NPPES record lists a practice address at 479 Swansea Mall Dr, Swansea, MA, 02777. Phone: (508) 973-1570. Providers update this record themselves, so call before visiting.

How can I verify William R. Blair, D.O.'s license?

NPPES lists Massachusetts license number 279139, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William R. Blair, D.O. prescribe under Medicare Part D?

In 2024, William R. Blair, D.O. had 9,313 Medicare Part D claims for 833 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.