William Sikov, MD - Medicare Hematology/oncology in Providence, RI

William Sikov, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Providence, Rhode Island. He went to Yale University School Of Medicine and graduated in 1982 and has 42 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Affinity Physicians Llc. and his current practice location is 1 Blackstone Street, 2nd Floor, Providence, Rhode Island. You can reach out to his office (for appointments etc.) via phone at (401) 453-7520.

William Sikov is licensed to practice in Rhode Island (license number MD7581) 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 1811916661.

Contact Information

William Sikov, MD
1 Blackstone Street, 2nd Floor,
Providence, RI 02903-0290
(401) 453-7520
Not Available

Map and Direction




Physician's Profile

Full NameWilliam Sikov
GenderMale
SpecialityHematology/oncology
Experience42 Years
Location1 Blackstone Street, Providence, Rhode Island
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:
  • William Sikov attended and graduated from Yale University School Of Medicine in 1982
  NPI Data:
  • NPI Number: 1811916661
  • Provider Enumeration Date: 07/19/2006
  • Last Update Date: 06/16/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8527081793
  • Enrollment ID: I20060113000456

Medical Identifiers

Medical identifiers for William Sikov such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811916661NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0000XInternal Medicine - Hematology MD7581 (Rhode Island)Secondary
207RH0003XInternal Medicine - Hematology & Oncology MD7581 (Rhode Island)Primary
207RX0202XInternal Medicine - Medical Oncology MD7581 (Rhode Island)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Women & Infants Hospital Of Rhode IslandProvidence, RIHospital
Kent County Memorial HospitalWarwick, RIHospital
Rhode Island HospitalProvidence, RIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Affinity Physicians Llc.0244413391616

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 Sikov allows following entities to bill medicare on his behalf.
Entity NameBrown Medicine
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689626764
PECOS PAC ID: 0446159776
Enrollment ID: O20040219000354
Entity NameAffinity Physicians Llc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184944662
PECOS PAC ID: 0244413391
Enrollment ID: O20110326000053

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 Sikov 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 Sikov, MD
101 Dudley St,
Providence, RI 02905-2401

Ph: (401) 274-1100
William Sikov, MD
1 Blackstone Street, 2nd Floor,
Providence, RI 02903-0290

Ph: (401) 453-7520

Reviews and Comments


Internal Medicine Doctors in Providence, RI

Christopher Donald Palmer, DO
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Practice Location: 101 Dudley St, Providence, RI 02905
Phone: 401-274-1122    Fax: 401-453-7597
Martha Catherine Trimbur, MD
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Practice Location: 245 Chapman St Ste 300, Providence, RI 02905
Phone: 401-444-4741    Fax: 401-444-4445
Karl Herman, M.D.
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Practice Location: 164 Summit Ave, Fain Bldg., Providence, RI 02906
Phone: 401-793-4489    Fax: 401-793-4047
Muhammad Baig, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 164 Summit Ave, Fain Bldg, Providence, RI 02906
Phone: 401-793-4489    Fax: 401-793-4047
Gary M Katzman, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 208 Collyer Street, Suite 100, Providence, RI 02904
Phone: 401-793-7191    Fax: 401-793-7200
Thomas Fairweather Crain, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 164 Summit Ave, Providence, RI 02906
Phone: 401-793-4630    
James Atkinson, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 164 Summit Ave, Providence, RI 02906
Phone: 401-793-4500    

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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.

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