William Sacks, MD - Medicare Internal Medicine in Milford, CT

William Sacks, MD is a medicare enrolled "Internal Medicine" physician in Milford, Connecticut. His current practice location is 300 Seaside Avenue, Milford Hospital, Milford, Connecticut. You can reach out to his office (for appointments etc.) via phone at (203) 876-4000.

William Sacks is licensed to practice in Connecticut (license number 027774) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1871537548.

Contact Information

William Sacks, MD
300 Seaside Avenue, Milford Hospital,
Milford, CT 06460
(203) 876-4000
Not Available

Map and Direction




Physician's Profile

Full NameWilliam Sacks
GenderMale
SpecialityInternal Medicine
Location300 Seaside Avenue, Milford, Connecticut
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1871537548
  • Provider Enumeration Date: 06/15/2006
  • Last Update Date: 09/19/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 8224934005
  • Enrollment ID: I20080228000258

Medical Identifiers

Medical identifiers for William Sacks such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1871537548NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 162917-1 (New York)Secondary
207R00000XInternal Medicine 027774 (Connecticut)Primary

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. William Sacks allows following entities to bill medicare on his behalf.
Entity NameSt. Vincent's Multispecialty Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043544489
PECOS PAC ID: 6204977218
Enrollment ID: O20100112000538
Entity NameSt. Vincents Urgent Care Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912305483
PECOS PAC ID: 6901119767
Enrollment ID: O20150722005148
Entity NameHartford Healthcare Medical Group Specialists Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023584216
PECOS PAC ID: 3173866241
Enrollment ID: O20190514001441

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. William Sacks 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
William Sacks, MD
345 Joan Dr,
Fairfield, CT 06824-2238

Ph: (203) 259-5468
William Sacks, MD
300 Seaside Avenue, Milford Hospital,
Milford, CT 06460

Ph: (203) 876-4000

Reviews and Comments


Internal Medicine Doctors in Milford, CT

Christopher Edward Snyder, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 40 Commerce Park, Milford, CT 06460
Phone: 203-878-3531    Fax: 203-876-2169
Dr. Ilene Linda Rosenberg, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 40 Commerce Park, Milford, CT 06460
Phone: 203-878-3531    Fax: 203-876-2169
Zhao Lu, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 849 Boston Post Rd, Suite 100, Milford, CT 06460
Phone: 203-713-8122    
Julie Yip, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 326 W Main St Ste 106, Milford, CT 06460
Phone: 203-878-4312    Fax: 203-878-4151
Dr. Gary Alan Spector, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 40 Commerce Park, Milford, CT 06460
Phone: 203-878-3531    Fax: 203-876-2169
Dr. Clare Liguori Cherney, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 83 Point Beach Dr, Milford, CT 06460
Phone: 203-645-6090    Fax: 203-283-1518
Muziana S Quadir, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 174 Cherry St, Milford, CT 06460
Phone: 203-877-6000    Fax: 203-877-6003

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.