Joseph M. Williams, M.D.
Ophthalmology Physician · Worcester, MA
Joseph M. Williams, M.D. is an ophthalmology physician with a practice address in Worcester, Massachusetts, and NPI 1467567438, issued on Aug 20, 2006. Check the license (Massachusetts 150862, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joseph M. Williams
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 150862 MA
Self-reported in NPPES; status is on the state search - Practice location
- 591 Lincoln St, Worcester, MA 01605
- Phone
- (508) 853-2020
- Enumerated
- Aug 20, 2006
- Record last updated
- May 11, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (508) 459-5082
- Medicare enrollment
- Enrolled (PECOS I20100315000661); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1989
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 591 Lincoln St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dennis Arinella, M.D.Ophthalmology Physician1982719944
- William DunbarOptometrist1942436605
- Robert FrischOptometrist1740416486
- James Gordon, RDOOptician1811093321
- Edward Kazarian, M.D.Ophthalmology Physician1821173733
- Dan LiuOphthalmology Physician1033565874
Verify Joseph M. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 150862Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% more Medicare Part D claims than the average ophthalmology physician in 2024
2,982 Medicare Part D claims for 616 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Prednisolone Acetate492 claims
- Latanoprost471 claims
- Tobramycin-Dexamethasone363 claims
- Ciprofloxacin Hcl323 claims
- Ketorolac Tromethamine300 claims
- Timolol Maleate198 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.
The MIPS final score for 2023 (Medicare payment program): 86.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $229.45
8 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joseph M. Williams among 791 ophthalmology physician records in Massachusetts
Joseph M. Williams, M.D. is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% 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 23% of them.
- NPI issued2006 · 23% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1989 · median 2002 among the 518 with a school on file
- Record last updated2017 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Worcester → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Dennis Arinella, M.D.Worcester, MA 016051982719944
- George Asdourian, M.D.Worcester, MA 016051083604342
- Michael Bradbury, MDWorcester, MA 016051407915341
- Richard Eisenberg, MDWorcester, MA 016051093765455
- Misha-Michelle Faustina, MDWorcester, MA 016051669438057
- Jeffrey Gallo, MDWorcester, MA 016051720013923
- Robert Gise, MDWorcester, MA 016051528024452
- Edward Kazarian, M.D.Worcester, MA 016051821173733
Common questions
What is Joseph M. Williams, M.D.'s NPI number?
Joseph M. Williams, M.D.'s National Provider Identifier (NPI) is 1467567438, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph M. Williams, M.D. located?
The NPPES record lists a practice address at 591 Lincoln St, Worcester, MA, 01605. Phone: (508) 853-2020. Providers update this record themselves, so call before visiting.
How can I verify Joseph M. Williams, M.D.'s license?
NPPES lists Massachusetts license number 150862, 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 Joseph M. Williams, M.D. prescribe under Medicare Part D?
In 2024, Joseph M. Williams, M.D. had 2,982 Medicare Part D claims for 616 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Joseph M. Williams, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.