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DR. STEPHEN F SLACK M.D.
NPI 1619080835
Obstetrics & Gynecology in Seattle, WA

Active since August 15, 2006PECOS EnrolledAccepts Medicare Assignment
1801 NW MARKET ST, SUITE 100, SEATTLE, WA 98107(206) 782-9335(206) 781-8713 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018, Jun 17, 2017 (3 updates tracked since 2017).

About Dr. Stephen F Slack M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEPHEN F SLACK M.D. (NPI 1619080835) is an individual obstetrics & gynecology provider in Seattle, Washington, licensed in Washington (MD00023080) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Providence Regional Medical Center Everett, and maintains a secondary practice location in Arlington.

NPPES Registry Identity

NPI1619080835
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. STEPHEN F SLACKCredential: M.D.
Location Address1801 NW MARKET ST, SUITE 100Seattle, WA 98107-3987
Mailing Address1801 Nw Market St, Suite 100Seattle, WA 98107-3987 · (206) 782-9335 · Fax (206) 781-8713
Phone(206) 782-9335
Fax(206) 781-8713
Sole ProprietorNo
Medical School CMSWashington University School Of MedicineGraduated 1984
Enumeration DateAugust 15, 2006
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1619080835 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in WA · MD00023080
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1801 NW MARKET ST, Seattle, WA 98107
Open in Google Maps ↗

Secondary Practice Location 1

Location 1903 Medical Center DrArlington, WA 98223-1697 · Phone (360) 435-0242 · Fax (360) 425-9135

Other Identifiers 1

Other00023080WA · Md #

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Stephen F Slack M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860416427
PECOS Enrollment IDI20060123000165
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Providence Regional Medical Center Everett

Acute Care Hospitals · Everett, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500014
Location1321 Colby AvenueEverett, WA 98201 · Snohomish County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98107 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JOHN K. TIDWELL DDS
Dentist (Oral and Maxillofacial Surgery)
1801 NW MARKET ST, SUITE 108
SEATTLE, WA 98107
King County (206) 783-9672
GARY DAVID ROSEN M.D.
Family Medicine
1801 NW MARKET ST, SUITE 203
SEATTLE, WA 98107
King County (206) 781-6079
VINCENT T. CHAN MD
Otolaryngology
1801 NW MARKET ST, SUITE 411
SEATTLE, WA 98107
King County (206) 781-6072
TERESA LYNN GOEPFERT D. O.
Obstetrics & Gynecology
1801 NW MARKET ST, 207
SEATTLE, WA 98107
King County (206) 781-6161
JOHN R. BAGLEY LMP
Massage Therapist
1801 NW MARKET ST, SUITE 200
SEATTLE, WA 98107
King County (206) 784-2800
JOHN K TIDWELL DDS PS
Dentist (Oral and Maxillofacial Surgery)
1801 NW MARKET ST, SUITE 108
SEATTLE, WA 98107
King County (206) 783-9672
CYNTHIA BIRD JOHNSON M.D.
Family Medicine
1801 NW MARKET ST, SUITE 203
SEATTLE, WA 98107
King County (206) 781-6079
DR. RICHARD ALAN FOGERTY M.D.
Internal Medicine
1801 NW MARKET ST, SUITE 309
SEATTLE, WA 98107
King County (206) 784-0940

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Slack's NPI number?

The NPI number for Stephen Slack is 1619080835. It was assigned to this individual provider in the NPPES registry on August 15, 2006.

Where is Stephen Slack located?

Stephen Slack practices at 1801 NW Market St Suite 100, Seattle, WA 98107. The listed phone number is (206) 782-9335.

What is Stephen Slack's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Stephen Slack enrolled in Medicare?

Yes. Stephen Slack is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Stephen Slack accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Stephen Slack as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Stephen Slack affiliated with any hospitals?

According to CMS data, Stephen Slack is affiliated with Providence Regional Medical Center Everett.

When was this NPI record last updated?

The NPPES record for Stephen Slack was last updated on July 21, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.