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ARTHUR LOUIS LENAHAN III MD MPH
NPI 1023647062
Medical Genetics - Ph.D. Medical Genetics in Portland, OR

Active since April 02, 2020PECOS EnrolledAccepts Medicare Assignment
501 N GRAHAM ST STE 330B, PORTLAND, OR 97227(503) 944-5970 Get Directions Write a Review

NPPES record last updated: February 14, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 14, 2025, Aug 9, 2024, Apr 2, 2020 (3 updates tracked since 2020).

About Arthur Louis Lenahan Iii Md Mph NPPES

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

ARTHUR LOUIS LENAHAN III MD MPH (NPI 1023647062) is an individual ph.d. medical genetics provider in Portland, Oregon, licensed in Oregon (MD220000) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Oregon Health Sciences University School Of Medicine (2020).

NPPES Registry Identity

NPI1023647062
Entity TypeIndividualMale
Primary Taxonomy207SG0205X
Provider Legal NameARTHUR LOUIS LENAHAN IIICredential: MD MPH
Location Address501 N GRAHAM ST STE 330BPortland, OR 97227-2009
Mailing AddressPo Box 4399Portland, OR 97208-4399
Phone(503) 944-5970
Sole ProprietorNo
Medical School CMSOregon Health Sciences University School Of MedicineGraduated 2020
Enumeration DateApril 2, 2020
Last NPPES UpdateFebruary 14, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 14, 2025
✔ NPI 1023647062 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyMedical Genetics · Ph.D. Medical GeneticsAllopathic & Osteopathic Physicians
Taxonomy Code207SG0205X
License✔ Licensed in OR · MD220000
Definition
A medical geneticist works in association with a medical specialist, is affiliated with a clinical genetics program and serves as a consultant to medical and dental specialists.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
501 N GRAHAM ST STE 330B, Portland, OR 97227
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11040 NW 22nd Ave Ste Ll030Portland, OR 97210-3057 · Phone (503) 413-7702
Location 22801 N Gantenbein Ave Fl 3Portland, OR 97227-1623 · Phone (503) 276-9300
Location 34800 Sand Point Way NE # Oc.7830Seattle, WA 98105-3901 · Phone (206) 987-2000

Accepted Insurance

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

Arthur Louis Lenahan Iii Md Mph 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 ID4587197017
PECOS Enrollment IDI20241023000818
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 4

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

MACKENZIE ELIZABETH COSTON CGC
Genetic Counselor, MS
501 N GRAHAM ST STE 330B
PORTLAND, OR 97227
Multnomah County (360) 393-7727
MS. CARMEL WIMBER PA-C, M.S.
Physician Assistant (Surgical)
501 N GRAHAM ST STE 330B
PORTLAND, OR 97227
Multnomah County (503) 413-3690
DANA KOSTINER SIMPSON MD
Medical Genetics (Clinical Genetics (M.D.))
501 N GRAHAM ST STE 330B
PORTLAND, OR 97227
Multnomah County (503) 944-5970
DR. GEORGE A ANADIOTIS DO
Medical Genetics (Ph.D. Medical Genetics)
501 N GRAHAM ST STE 330B
PORTLAND, OR 97227
Multnomah County (503) 944-5970

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 Arthur Lenahan's NPI number?

The NPI number for Arthur Lenahan is 1023647062. It was assigned to this individual provider in the NPPES registry on April 2, 2020.

Where is Arthur Lenahan located?

Arthur Lenahan practices at 501 N Graham St Ste 330B, Portland, OR 97227. The listed phone number is (503) 944-5970.

What is Arthur Lenahan's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Ph.D. Medical Genetics, with taxonomy code 207SG0205X.

Is Arthur Lenahan enrolled in Medicare?

Yes. Arthur Lenahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Arthur Lenahan accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and Regence BlueCross BlueShield of Oregon list Arthur Lenahan 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 Arthur Lenahan was last updated on February 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.