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MARTHA MCMAHON PA-C
NPI 1407241490
Physician Assistant - Surgical in Portland, OR

Active since April 06, 2015PECOS Enrolled
808 SW 15TH AVE, PORTLAND, OR 97205(503) 274-4994 Get Directions Write a Review

NPPES record last updated: October 22, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 15, 2016, Jun 24, 2016 (2 updates tracked since 2016).

About Martha Mcmahon Pa-c NPPES

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

MARTHA MCMAHON PA-C (NPI 1407241490) is an individual surgical provider in Portland, Oregon, licensed in Oregon (PA172159) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407241490
Entity TypeIndividualFemale
Primary Taxonomy363AS0400X
Provider Legal NameMARTHA MCMAHONCredential: PA-C
Location Address808 SW 15TH AVEPortland, OR 97205-1907
Mailing Address808 Sw 15th AvePortland, OR 97205-1907 · (503) 274-4994
Phone(503) 274-4994
Sole ProprietorNo
Enumeration DateApril 6, 2015
Last NPPES UpdateOctober 22, 20252 updates tracked since enumeration
NPPES CertifiedOctober 22, 2025
✔ NPI 1407241490 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License✔ Licensed in OR · PA172159
Also ListedPhysician AssistantTaxonomy 363A00000X · License 172159 (OR)
808 SW 15TH AVE, Portland, OR 97205
Open in Google Maps ↗

Other Names 1

Former Name (1)Martha Sicking

Other Identifiers 2

Medicaid500698025OR
OtherR186744OR · Medicare Ptan

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Martha Mcmahon Pa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Other Providers at the Same Location NPPES 10

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

ROBERT KEITH MATTERI MD
Specialist
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4994
EMILY L MOUNTS M.S.
Genetic Counselor, MS
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4994
MARISSA BONUS LUCK MD
Obstetrics & Gynecology (Reproductive Endocrinology)
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4774
RUMER MATCHAM RN
Registered Nurse (Reproductive Endocrinology/Infertility)
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4994
DR. ELIZABETH BARBIERI M.D.
Obstetrics & Gynecology (Reproductive Endocrinology)
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4994
REPROGENETICS OREGON
Clinical Medical Laboratory
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (203) 601-5200
POSTERITY MEN'S HEALTH, P.C.
Urology
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (720) 666-4739
BRANDON BANKOWSKI M.D.
Specialist
808 SW 15TH AVE
PORTLAND, OR 97205
Multnomah County (503) 274-4994

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 Mcmahon's NPI number?

The NPI number for Martha Mcmahon is 1407241490. It was assigned to this individual provider in the NPPES registry on April 6, 2015. The provider is also known as Martha Sicking.

Where is Martha Mcmahon located?

Martha Mcmahon practices at 808 SW 15th Ave, Portland, OR 97205. The listed phone number is (503) 274-4994.

What is Martha Mcmahon's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

Is Martha Mcmahon enrolled in Medicare?

Yes. Martha Mcmahon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Martha Mcmahon was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.