NPPES file of Aug 9, 2026

William D. Dillon, MD

Cardiovascular Disease Physician · Wrentham, MA

William D. Dillon, MD is a cardiovascular disease physician with a practice address in Wrentham, Massachusetts, and NPI 1689656373, issued on Nov 17, 2005. Check the license (Massachusetts 50050, 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
1689656373
Name
William D. Dillon
Credential
MD
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
50050 MA
Self-reported in NPPES; status is on the state search
Practice location
844 Franklin St, Wrentham, MA 02093
Phone
(508) 384-2500
Enumerated
Nov 17, 2005
Record last updated
Dec 27, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(508) 384-9410
Medicaid ID
3010449 MA
Medicare enrollment
Enrolled (PECOS I20050329000845); accepts Medicare assignment
Medical or professional school
University Of Massachusetts Medical School, 1981
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.
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Also registered at 844 Franklin St

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

  1. Alan Goldberg, ED.D.Psychologist1801958533
  2. Martine Miner, L.M.T., NCTMBMechanotherapist1073728416

Verify William D. Dillon 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 50050
    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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29% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

2,193 Medicare Part D claims for 227 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. William Dillon2,193
  2. Specialty average3,078

Most prescribed

  1. Metoprolol Succinate273 claims
  2. Atorvastatin Calcium204 claims
  3. Lisinopril138 claims
  4. Amlodipine Besylate115 claims
  5. Losartan Potassium106 claims
  6. Eliquis105 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: $13.57

1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Dillon$13.57
  2. Specialty average$3,819.56

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

William D. Dillon among 1,080 cardiovascular disease physician records in Massachusetts

William D. Dillon, MD is one of 1,080 cardiovascular disease physician records with a practice address in Massachusetts. 75% 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, 83% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated1981 · median 2001 among the 698 with a school on file
  • Record last updated2019 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cardiovascular Disease Physician providers in Massachusetts

There are 1,080 cardiovascular disease physician records in Massachusetts.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Robert Blanton, M.D.Boston, MA 021111013935436
  2. Robert Blaustein, M.D.Boston, MA 021111447298740
  3. Gordon Huggins, M.D.Boston, MA 021111255345559
  4. Iris Jaffe, M.D.Boston, MA 021111073561163
  5. Richard Karas, MDBoston, MA 021111073620431
  6. Carey Kimmelstiel, MDBoston, MA 021111043326713
  7. Marvin Konstam, MDBoston, MA 021111053428474
  8. Ayan Patel, M.D.Boston, MA 021111720013865

Common questions

What is William D. Dillon, MD's NPI number?

William D. Dillon, MD's National Provider Identifier (NPI) is 1689656373, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William D. Dillon, MD located?

The NPPES record lists a practice address at 844 Franklin St, Wrentham, MA, 02093. Phone: (508) 384-2500. Providers update this record themselves, so call before visiting.

How can I verify William D. Dillon, MD's license?

NPPES lists Massachusetts license number 50050, 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 D. Dillon, MD prescribe under Medicare Part D?

In 2024, William D. Dillon, MD had 2,193 Medicare Part D claims for 227 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.