Joseph M Williams, MD - Medicare Ophthalmology in Worcester, MA

Joseph M Williams, MD is a medicare enrolled "Ophthalmology" physician in Worcester, Massachusetts. He went to University Of Rochester School Of Medicine And Dentistry and graduated in 1989 and has 35 years of diverse experience with area of expertise as Ophthalmology. His current practice location is 591 Lincoln St, Worcester, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 853-2020.

Joseph M Williams is licensed to practice in Massachusetts (license number 150862) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1467567438.

Contact Information

Joseph M Williams, MD
591 Lincoln St,
Worcester, MA 01605-1932
(508) 853-2020
(508) 459-5082

Map and Direction




Physician's Profile

Full NameJoseph M Williams
GenderMale
SpecialityOphthalmology
Experience35 Years
Location591 Lincoln St, Worcester, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Joseph M Williams attended and graduated from University Of Rochester School Of Medicine And Dentistry in 1989
  NPI Data:
  • NPI Number: 1467567438
  • Provider Enumeration Date: 08/20/2006
  • Last Update Date: 05/11/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 6103869086
  • Enrollment ID: I20100315000661

Medical Identifiers

Medical identifiers for Joseph M Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467567438NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 150862 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Umass Memorial Medical Center/university CampusWorcester, MAHospital

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Joseph M Williams allows following entities to bill medicare on his behalf.
Entity NameJoseph M. Williams, M.d.,p.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417150194
PECOS PAC ID: 8022143601
Enrollment ID: O20100322000349

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Joseph M Williams is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Joseph M Williams, MD
591 Lincoln St,
Worcester, MA 01605-1932

Ph: (508) 853-2020
Joseph M Williams, MD
591 Lincoln St,
Worcester, MA 01605-1932

Ph: (508) 853-2020

Reviews and Comments


Ophthalmology Doctors in Worcester, MA

Frank J Mccabe, M.D.
Ophthalmology
Medicare: May Accept Medicare Assignments
Practice Location: 67 Belmont Street, Suite 302, Worcester, MA 01605
Phone: 508-752-1155    Fax: 508-752-4862
Dr. Isabel Maria Balderas, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 33 Lancaster St, Worcester, MA 01609
Phone: 508-791-8484    Fax: 508-791-1658
Dr. Patricia Hall Peffer, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 281 Lincoln St, 3rd Floor, Worcester, MA 01605
Phone: 774-329-9475    Fax: 508-334-4655
Dr. George K Asdourian, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 218 Lincoln Street, Worcester, MA 01605
Phone: 508-334-6855    Fax: 508-334-6795
Dr. Lauren Ann Branchini, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 281 Lincoln St, Worcester, MA 01605
Phone: 508-334-6855    Fax: 508-334-6795
Mr. Richard M Eisenberg, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 25 Oak Ave, Worcester, MA 01605
Phone: 508-421-2010    Fax: 508-756-8078
Saad Al-kadhi, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 281 Lincoln St, Ophthalmology, Worcester, MA 01605
Phone: 508-334-6855    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.