SONDRA E KAPNADAK MD
NPI 1750586905
Obstetrics & Gynecology in Seattle, WA

Active since June 18, 2007PECOS EnrolledAccepts Medicare Assignment
1101 MADISON ST STE 950, SEATTLE, WA 98104(206) 682-5800(206) 233-9657 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Jun 22, 2017 (2 updates tracked since 2017).

About Sondra E Kapnadak Md NPPES

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

SONDRA E KAPNADAK MD (NPI 1750586905) is an individual obstetrics & gynecology provider in Seattle, Washington, licensed in Washington (MD60463903) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center, and is a graduate of Oregon Health Sciences University School Of Medicine (2007).

NPPES Registry Identity

NPI1750586905
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameSONDRA E KAPNADAKCredential: MD
Location Address1101 MADISON ST STE 950Seattle, WA 98104-3592
Mailing Address805 Madison St Ste 901Seattle, WA 98104-1172 · (206) 264-8100
Fax(206) 233-9657
Sole ProprietorNo
Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2007
Enumeration DateJune 18, 2007
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1750586905 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 · MD60463903
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.
1101 MADISON ST STE 950, Seattle, WA 98104

Other Identifiers 1

Medicaid2042640WA

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sondra E Kapnadak Md 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 ID6800065020
PECOS Enrollment IDI20150410000015
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Sondra Kapnadak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Obstetrics & Gynecology
1101 MADISON ST STE 950
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • 589 clinicians in this Medicare group
Obstetrics & Gynecology
1101 MADISON ST STE 1150
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • Medicare enrollment name: Womens Healthcare Alliance PLLC
  • 16 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Swedish Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500027
Location747 BroadwaySeattle, WA 98122 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98104 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 12

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

Nurse Practitioner (Women's Health)
1101 MADISON ST STE 950
SEATTLE, WA 98104
Obstetrics & Gynecology
1101 MADISON ST STE 950
SEATTLE, WA 98104
Nurse Practitioner (Obstetrics & Gynecology)
1101 MADISON ST STE 950
SEATTLE, WA 98104
Obstetrics & Gynecology
1101 MADISON ST STE 950
SEATTLE, WA 98104
Advanced Practice Midwife
1101 MADISON ST STE 950
SEATTLE, WA 98104
Obstetrics & Gynecology
1101 MADISON ST STE 950
SEATTLE, WA 98104
Obstetrics & Gynecology
1101 MADISON ST STE 950
SEATTLE, WA 98104
Obstetrics & Gynecology
1101 MADISON ST STE 950
SEATTLE, WA 98104

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 Sondra Kapnadak's NPI number?

The NPI number for Sondra Kapnadak is 1750586905. It was assigned to this individual provider in the NPPES registry on June 18, 2007.

Where is Sondra Kapnadak located?

Sondra Kapnadak practices at 1101 Madison St Ste 950, Seattle, WA 98104. The listed phone number is (206) 682-5800.

What is Sondra Kapnadak's specialty?

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

Is Sondra Kapnadak enrolled in Medicare?

Yes. Sondra Kapnadak 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.

Which organizations bill Medicare for Sondra Kapnadak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sondra Kapnadak reassigns Medicare benefits to 2 organizations: Proliance Surgeons, Inc., P.S. (Seattle, WA) and Women's Healthcare Alliance PLLC (Seattle, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sondra Kapnadak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sondra Kapnadak accept?

Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Sondra Kapnadak 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 Sondra Kapnadak affiliated with any hospitals?

According to CMS data, Sondra Kapnadak is affiliated with Swedish Medical Center.

When was this NPI record last updated?

The NPPES record for Sondra Kapnadak was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.