Dr Stephen F Slack, MD - Medicare Obstetrics & Gynecology in Seattle, WA

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Dr Stephen F Slack, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Seattle, Washington. His current practice location is 1801 Nw Market St, Suite 100, Seattle, Washington. You can reach out to his office (for appointments etc.) via phone at (206) 782-9335.

Dr Stephen F Slack is licensed to practice in Washington (license number MD00023080) 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 1619080835.

Contact Information

Dr Stephen F Slack, MD
1801 Nw Market St, Suite 100,
Seattle, WA 98107-3987
(206) 782-9335
(206) 781-8713

Map and Direction




Physician's Profile

Full NameDr Stephen F Slack
GenderMale
SpecialityObstetrics & Gynecology
Location1801 Nw Market St, Seattle, Washington
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1619080835
  • Provider Enumeration Date: 08/15/2006
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 2860416427
  • Enrollment ID: I20060123000165

Medical Identifiers

Medical identifiers for Dr Stephen F Slack such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1619080835NPI-NPPES
00023080OtherWAMD #

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology MD00023080 (Washington)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. Dr Stephen F Slack allows following entities to bill medicare on his behalf.
Entity NameKing County Public Hospital District No 2
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801986070
PECOS PAC ID: 7618880097
Enrollment ID: O20031111000557
Entity NamePublic Hospital Dist No 1 Skagit
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023332749
PECOS PAC ID: 6800793522
Enrollment ID: O20040309001059
Entity NameValley Medical Group-renton
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619209574
PECOS PAC ID: 4183753965
Enrollment ID: O20100604000113
Entity NameObhg Washington Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962729525
PECOS PAC ID: 0345364642
Enrollment ID: O20100823001087

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. Dr Stephen F Slack 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
Dr Stephen F Slack, MD
1801 Nw Market St, Suite 100,
Seattle, WA 98107-3987

Ph: (206) 782-9335		Dr Stephen F Slack, MD
1801 Nw Market St, Suite 100,
Seattle, WA 98107-3987

Ph: (206) 782-9335

Reviews and Comments


Obstetrics & Gynecology Doctors in Seattle, WA

Dr. Jaime Marie Michaelson, MD
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Alisa Beth Kachikis, M.D.
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Karen L. Bohmke, MD
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Lisa S. Callegari, MD
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Practice Location: 1959 Ne Pacific St, Seattle, WA 98195
Phone: 206-520-5000    
Anne-marie Elizabeth Amies Oelschlager,
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Shirley Andrews, MD
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Practice Location: 1560 N 115th St Ste 212, Seattle, WA 98133
Phone: 206-363-2800    Fax: 206-363-2811
Lyndsey Summer Benson, M.D.
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Practice Location: 1959 Ne Pacific St, Box 356460, Seattle, WA 98195
Phone: 610-202-4028    

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.