NPPES file of Aug 9, 2026

William Joseph Pegg, M.D.

Obstetrics & Gynecology Physician · Hyannis, MA

William Joseph Pegg, M.D. is an obstetrics & gynecology physician with a practice address in Hyannis, Massachusetts, and NPI 1285798074, issued on Dec 19, 2006. Check the license (Massachusetts 59534, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1285798074
Name
William Joseph Pegg
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
59534 MA
Self-reported in NPPES; status is on the state search
Practice location
26 Gleason St, Hyannis, MA 02601
Phone
(508) 771-4850
Enumerated
Dec 19, 2006
Record last updated
Oct 2, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(508) 771-3658
Medicaid ID
9725890 MA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 1,127 in Massachusetts → Look up another NPI →

Also registered at 26 Gleason St

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

  1. Michele Eldredge, NPNurse Practitioner1215971460
  2. Seth Jones, M.D.Plastic Surgery Physician1184704009
  3. Michael Loffredo, M.D.Plastic Surgery Physician1679653430
  4. Lee Okurowski, M.D.Occupational Medicine Physician1265483846
  5. Kimberly Wedge, NPAdult Health Nurse Practitioner1225250996
  6. Robert Yoo, M.D.Plastic Surgery Physician1982790317

Verify William Joseph Pegg 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 59534    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

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William Joseph Pegg among 1,127 obstetrics & gynecology physician records in Massachusetts

William Joseph Pegg, M.D. is one of 1,127 obstetrics & gynecology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 50% newer
  • In a Medicare fileNo · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2007 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Massachusetts

There are 1,127 obstetrics & gynecology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,127 in Massachusetts → Every provider in Hyannis → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. William Agel, MDHyannis, MA 026011871560375
  2. Richard Angelo, M.D.Hyannis, MA 026011407837305
  3. Steven Blumberg, DOHyannis, MA 026011205837473
  4. Donald Guadagnoli, MDHyannis, MA 026011518174382
  5. Geralyn Leone, M.D.Hyannis, MA 026011033159579
  6. Joshua LuptonHyannis, MA 026011144612094
  7. Michael Neel, M.D.Hyannis, MA 026011114925401
  8. Peter Rufleth, MDHyannis, MA 026011871601278

Common questions

What is William Joseph Pegg, M.D.'s NPI number?

William Joseph Pegg, M.D.'s National Provider Identifier (NPI) is 1285798074, issued on Dec 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Joseph Pegg, M.D. located?

The NPPES record lists a practice address at 26 Gleason St, Hyannis, MA, 02601. Phone: (508) 771-4850. Providers update this record themselves, so call before visiting.

How can I verify William Joseph Pegg, M.D.'s license?

NPPES lists Massachusetts license number 59534, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.