OBSTETRIX MEDICAL GROUP OF WASHINGTON INC PS
NPI 1861599573
Obstetrics & Gynecology - Maternal & Fetal Medicine in Seattle, WA
About Obstetrix Medical Group Of Washington Inc Ps NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OBSTETRIX MEDICAL GROUP OF WASHINGTON INC PS (NPI 1861599573) is a healthcare organization registered as a maternal & fetal medicine in Seattle, Washington and active in the NPI registry since September 2006. The organization lists Nanette Sanders, Assistant Secretary, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 7
Other Identifiers 5
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Obstetrix Medical Group Of Washington Inc Ps is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
129Medicare enrollment records show 129 clinicians reassign Medicare billing to Obstetrix Medical Group Of Washington Inc Ps, which bills Medicare for the services they deliver. Of these, 15 practice at this address and 45 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 7
Nearest to this location (20)
See all 129Seattle, WA 98104
Seattle, WA 98104
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Obstetrix Medical Group Of Washington Inc Ps's NPI number?
The NPI number for Obstetrix Medical Group Of Washington Inc Ps is 1861599573. It was assigned to this organization in the NPPES registry on September 17, 2006.
Where is Obstetrix Medical Group Of Washington Inc Ps located?
Obstetrix Medical Group Of Washington Inc Ps is located at 1229 Madison St Ste 750, Seattle, WA 98104. The listed phone number is (206) 386-2101.
What is Obstetrix Medical Group Of Washington Inc Ps's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Obstetrix Medical Group Of Washington Inc Ps enrolled in Medicare?
Yes. Obstetrix Medical Group Of Washington Inc Ps is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Obstetrix Medical Group Of Washington Inc Ps?
According to the CMS Revalidation Reassignment List (October 2026 release), 129 clinicians in 7 Medicare specialties reassign their Medicare billing to Obstetrix Medical Group Of Washington Inc Ps. A 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 the clinician's services. The largest specialties are Obstetrics/Gynecology (100), Diagnostic Radiology (15) and Nurse Practitioner (6). Of these, 15 practice at this address and 45 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Obstetrix Medical Group Of Washington Inc Ps accept?
Health plans from Ambetter Health and Premera Blue Cross Blue Shield of Alaska list Obstetrix Medical Group Of Washington Inc Ps 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.
When was this NPI record last updated?
The NPPES record for Obstetrix Medical Group Of Washington Inc Ps was last updated on October 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Obstetrix Medical Group Of Washington Inc Ps · NPI 1861599573
Maternal & Fetal Medicine organization in Seattle, Washington. Organization record, active in the CMS NPPES registry since September 17, 2006.
## Identity
- **NPI:** 1861599573 (Entity type: Organization)
- **Enumerated:** September 17, 2006
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **Organization subpart:** No
- **Authorized official:** Nanette Sanders, ASSISTANT SECRETARY
## Practice location
- **Address:** 1229 MADISON ST STE 750, Seattle, WA 98104-3540
- **Phone:** (206) 386-2101
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 129 clinicians in 7 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Obstetrics/Gynecology (100), Diagnostic Radiology (15), Nurse Practitioner (6); 15 practice at this address and 45 within 10 miles; [full list](https://npiprofile.com/npi/1861599573/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 23, 2024
- **Other identifiers:** Medicaid 807704300 (ID); Medicaid 7099179 (WA); Medicaid 7107162 (WA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1861599573) · Data from the CMS NPPES public registry.