THOMAS D. BRENNAN MD
NPI 1831539634
Obstetrics & Gynecology in Portland, OR

Q: What is Thomas Brennan's NPI number?

The NPI number for Thomas Brennan is 1831539634. It was assigned to this individual provider in the NPPES registry on June 26, 2013.

Q: What is Thomas Brennan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Thomas Brennan was last updated on January 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.

Active since June 26, 2013PECOS EnrolledAccepts Medicare Assignment

9701 SW BARNES RD STE 200, PORTLAND, OR 97225(503) 734-3700(503) 473-8462 Get Directions Write a Review

NPPES record last updated: January 28, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 28, 2026, Jun 19, 2019, May 28, 2019 (3 updates tracked since 2019).

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About Thomas D. Brennan Md NPPES

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

THOMAS D. BRENNAN MD (NPI 1831539634) is an individual obstetrics & gynecology provider in Portland, Oregon, licensed in Oregon (MD191851) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Providence St Vincent Medical Center, and is a graduate of Oregon Health Sciences University School Of Medicine (2015).

NPPES Registry Identity

NPI1831539634

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameTHOMAS D. BRENNANCredential: MD

Location Address9701 SW BARNES RD STE 200Portland, OR 97225-6689

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

Phone(503) 734-3700

Fax(503) 473-8462

Sole ProprietorNo

Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2015

Enumeration DateJune 26, 2013

Last NPPES UpdateJanuary 28, 20263 updates tracked since enumeration

NPPES CertifiedJanuary 28, 2026

✔ NPI 1831539634 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 · MD191851

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.

9701 SW BARNES RD STE 200, Portland, OR 97225

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Other Identifiers 1

Medicaid500689019OR

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

Thomas D. Brennan 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 ID4688982820

PECOS Enrollment IDI20191122000425

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 St Vincent Medical Center

Acute Care Hospitals · Portland, OR

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number380004

Location9205 SW Barnes RoadPortland, OR 97225 · Washington County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97225 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 20

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

MARY LUCARELLI GALLAGHER CNM

Advanced Practice Midwife