Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARTHA NIEBE TOMAS SIERRA
NPI 1790510980
Doula in Portland, OR

Q: What is Martha Tomas Sierra's NPI number?

The NPI number for Martha Tomas Sierra is 1790510980. It was assigned to this individual provider in the NPPES registry on September 6, 2024.

Q: What is Martha Tomas Sierra's specialty?

The primary specialty registered for this NPI is Doula with taxonomy code 374J00000X.

Active since September 06, 2024

2800 N VANCOUVER AVE, PORTLAND, OR 97227(503) 413-4500 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 14, 2026, Sep 6, 2024 (2 updates tracked since 2024).

On this page

About Martha Niebe Tomas Sierra NPPES

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

MARTHA NIEBE TOMAS SIERRA (NPI 1790510980) is an individual doula in Portland, Oregon, licensed in Oregon (112647) and active in the NPI registry since September 2024. She maintains 2 additional practice locations.

NPPES Registry Identity

NPI1790510980

Entity TypeIndividualFemale

Primary Taxonomy374J00000X

Provider Legal NameMARTHA NIEBE TOMAS SIERRA

Location Address2800 N VANCOUVER AVEPortland, OR 97227-1630

Mailing Address1440 Ne 223rd Ave Unit 38Wood Village, OR 97060-2625 · (971) 227-9547

Phone(503) 413-4500

Sole ProprietorNo

Enumeration DateSeptember 6, 2024

Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration

NPPES CertifiedJuly 14, 2026

✔ NPI 1790510980 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDoulaNursing Service Related Providers

Taxonomy Code374J00000X

Licenses✔ Licensed in OR · 112647✔ Licensed in OR · 6928221

Definition

Doulas work in a variety of settings and have been trained to provide physical, emotional, and informational support to a mother before, during, and just after birth and/or provide emotional and practical support to a mother during the postpartum period.

2800 N VANCOUVER AVE, Portland, OR 97227

Open in Google Maps ↗

Secondary Practice Locations 2

Location 12801 N Gantenbein AvePortland, OR 97227-1623 · Phone (503) 276-6500

Location 29205 SW Barnes RdPortland, OR 97225-6603 · Phone (503) 216-1234

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. EMMANUEL TRUNGTOAN TAVAN MD

Internal Medicine (Pulmonary Disease)

2800 N VANCOUVER AVE, SUITE 230
PORTLAND, OR 97227

Multnomah County (503) 413-2901

PATRICIA FUNK DO

Internal Medicine

2800 N VANCOUVER AVE, SUITE 230
PORTLAND, OR 97227

Multnomah County (503) 413-4340

MS. MARY LISA GATES LCSW

Social Worker (Clinical)

2800 N VANCOUVER AVE, SUITE 230
PORTLAND, OR 97227

Multnomah County (503) 413-5161

SUSAN T. SKINNER MD

Pediatrics

2800 N VANCOUVER AVE, SUITE 201
PORTLAND, OR 97227

Multnomah County (503) 331-2400

DR. TARA LYN EAGLE D.O.

Internal Medicine (Critical Care Medicine)

2800 N VANCOUVER AVE, SUITE 230
PORTLAND, OR 97227

Multnomah County (503) 413-2901

MELISSA KAY MULDER-WRIGHT MSW-LCSW

Social Worker (Clinical)

2800 N VANCOUVER AVE, SUITE 230
PORTLAND, OR 97227

Multnomah County (503) 413-2901

DR. GILLIAN RAE PIRO MD

Pediatrics

2800 N VANCOUVER AVE
PORTLAND, OR 97227

Multnomah County (503) 413-2902

MRS. LISA MARIE PETROCCHI-COLLETT M.A.

Counselor (Mental Health)

2800 N VANCOUVER AVE, SUITE 201
PORTLAND, OR 97227

Multnomah County (503) 331-2436

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 Martha Tomas Sierra's NPI number?

The NPI number for Martha Tomas Sierra is 1790510980. It was assigned to this individual provider in the NPPES registry on September 6, 2024.

Where is Martha Tomas Sierra located?

Martha Tomas Sierra practices at 2800 N Vancouver Ave, Portland, OR 97227. The listed phone number is (503) 413-4500.

What is Martha Tomas Sierra's specialty?

The primary specialty registered for this NPI is Doula with taxonomy code 374J00000X.

When was this NPI record last updated?

The NPPES record for Martha Tomas Sierra was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.