MARGUERITE R STEWART MD
NPI 1861474843
Obstetrics & Gynecology in Tualatin, OR

Q: What is Marguerite Stewart's NPI number?

The NPI number for Marguerite Stewart is 1861474843. It was assigned to this individual provider in the NPPES registry on November 16, 2005.

Q: What is Marguerite Stewart's specialty?

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

Active since November 16, 2005PECOS EnrolledAccepts Medicare Assignment

19250 SW 65TH AVE STE 300, TUALATIN, OR 97062(503) 692-1242(503) 691-3615 Get Directions Write a Review

NPPES record last updated: January 30, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jan 30, 2026, Jun 24, 2016 (2 updates tracked since 2016).

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About Marguerite R Stewart Md NPPES

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

MARGUERITE R STEWART MD (NPI 1861474843) is an individual obstetrics & gynecology provider in Tualatin, Oregon, licensed in Oregon (MD22723) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (1985).

NPPES Registry Identity

NPI1861474843

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameMARGUERITE R STEWARTCredential: MD

Location Address19250 SW 65TH AVE STE 300Tualatin, OR 97062-7707

Mailing Address7650 Sw Beveland Rd Ste 200Portland, OR 97223-8692 · (503) 601-3615 · Fax (503) 646-1683

Phone(503) 692-1242

Fax(503) 691-3615

Sole ProprietorNo

Medical School CMSWayne State University School Of MedicineGraduated 1985

Enumeration DateNovember 16, 2005

Last NPPES UpdateJanuary 30, 20262 updates tracked since enumeration

NPPES CertifiedJanuary 30, 2026

✔ NPI 1861474843 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in OR · MD22723

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.

19250 SW 65TH AVE STE 300, Tualatin, OR 97062

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Other Identifiers 1

Medicaid288027OR

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and more.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

Marguerite R Stewart 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 ID9133315948

PECOS Enrollment IDI20101118001240

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97062 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

$134.16 typical visit price

range $58.99 – $176.88

Typical copayment $33.54 (range $14.74 – $44.22)

Most-billed visit code 99204

Established Patient

$73.28 typical visit price

range $19.32 – $144.79

Typical copayment $18.32 (range $4.83 – $36.19)

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 18

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

NOREEN VALDEZ GRUBER LPC

Counselor (Professional)