Arthur Louis Lenahan, MD MPH
Medical Genetics And Genomics (CMS) · Portland, OR
At a glance
501 N Graham St Ste 330B, Portland, OR 97227-2009
NPPES record updated Feb 14, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
501 N Graham St Ste 330BPortland, OR 97227-2009
Additional reported practice locations
1040 Nw 22Nd Ave Ste Ll030Portland, OR 972103057
Phone: 5034137702 2801 N Gantenbein Ave Fl 3
Portland, OR 972271623
Phone: 5032769300 4800 Sand Point Way Ne # Oc.7830
Seattle, WA 981053901
Phone: 2069872000
Education & affiliations
- Medical / professional school
- Oregon Health Sciences University School Of Medicine
- Graduation year
- 2020
- CMS specialties
- Medical Genetics And Genomics
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Medical Genetics And Genomics (CMS)
- Taxonomy code
- 207SG0205X
- Enumeration date
- Apr 2, 2020
- Record updated
- Feb 14, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD MPH
Reported taxonomies and licenses
390200000X
207SG0205X · Primary
License reported: MD220000 OR
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
501 N Graham St Ste 330BPortland, OR 97227-2009
- Phone
- (503) 944-5970
Mailing address
PO BOX 4399PORTLAND, OR 972084399
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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