NPPES file of Aug 9, 2026

William James Marasco, MD

Diagnostic Radiology Physician · West Yarmouth, MA

William James Marasco, MD is a diagnostic radiology physician with a practice address in West Yarmouth, Massachusetts, and NPI 1588654891, issued on Oct 27, 2005. Check the license (Massachusetts 71311, 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 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588654891
Name
William James Marasco
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
71311 MA
Self-reported in NPPES; status is on the state search
Practice location
21 Aarons Way, West Yarmouth, MA 02673
Phone
(508) 771-5200
Enumerated
Oct 27, 2005
Record last updated
Apr 7, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicaid ID
3135942 MA
Medicare enrollment
Enrolled (PECOS I20050614001350); accepts Medicare assignment
Medical or professional school
Boston University School Of Medicine, 1988
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.
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Verify William James Marasco 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 71311
    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.

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No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

William James Marasco among 1,658 diagnostic radiology physician records in Massachusetts

William James Marasco, MD is one of 1,658 diagnostic radiology physician records with a practice address in Massachusetts. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 87% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1988 · median 2006 among the 1,125 with a school on file
  • Record last updated2014 · 53% 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 Massachusetts 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 Massachusetts

There are 1,658 diagnostic radiology physician records in Massachusetts.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Alexander Adduci, MD PHDWest Barnstable, MA 026681306890017
  2. Neil Steinmetz, M.D.Truro, MA 026661982674727
  3. Brian Rice, MDSouth Dennis, MA 026601700838281
  4. Egle PediniHarwich Port, MA 026461588865067
  5. Heather Hardie, MDAttleboro, MA 027031104807643
  6. Kenneth Kaplan, MDAttleboro, MA 027031801877162
  7. Wesley Rosario-Medina, MDAttleboro, MA 027031861483737
  8. Lawrence Steinbach, MDAttleboro, MA 027031851372353

Common questions

What is William James Marasco, MD's NPI number?

William James Marasco, MD's National Provider Identifier (NPI) is 1588654891, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William James Marasco, MD located?

The NPPES record lists a practice address at 21 Aarons Way, West Yarmouth, MA, 02673. Phone: (508) 771-5200. Providers update this record themselves, so call before visiting.

How can I verify William James Marasco, MD's license?

NPPES lists Massachusetts license number 71311, 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.

What is William James Marasco, MD's MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.