Individual Healthcare Provider
Arthur Louis Lenahan, MD MPH
Provider's NPPES record last updated: February 14, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1023647062
- Primary Specialty
- Medical Genetics — Ph.D. Medical Genetics
- Practice Location
- Portland, Oregon
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 17, 2026, 10:03 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Medical Genetics
Ph.D. Medical Genetics
Allopathic & Osteopathic Physicians
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.
Taxonomy code 207SG0205X Student in an Organized Health Care Education/Training Program
Student, Health Care
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Taxonomy code 390200000X
Provider-Reported License Information
- Medical Genetics (Oregon)
- MD220000
Practice Locations
Practice Location
501 N Graham St Ste 330b
Portland, Oregon 97227-2009
Phone: (503) 944-5970
Additional Practice Location
4800 Sand Point Way Ne # Oc.7830
Seattle, Washington 98105-3901
Phone: (206) 987-2000
Additional Practice Location
1040 Nw 22nd Ave Ste Ll030
Portland, Oregon 97210-3057
Phone: (503) 413-7702
Additional Practice Location
2801 N Gantenbein Ave Fl 3
Portland, Oregon 97227-1623
Phone: (503) 276-9300
Record Information
- Enumeration Date
- April 2, 2020
- Provider's NPPES Record Last Updated
- February 14, 2025
- Certification Date
- February 14, 2025
- NPISignal NPPES Dataset
- August 2026
See Something Wrong?
Incorrect provider information
Everything on this page comes directly from the NPPES data CMS publishes. NPISignal cannot edit a provider's record — only the provider or organization can, directly through NPPES.
Update a record through NPPESSomething wrong with this page?
If NPISignal is displaying this data incorrectly — a formatting error, a broken link, a mismatch with the source file — let us know.
Report a display issue