ARTHUR LOUIS III LENAHAN (MD MPH) – Ph.D. Medical Genetics Physician, NPI 1023647062
Ph.D. Medical Genetics Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
20 MEDICAL GENETICS AND GENOMICS in WA
Provider Addresses for ARTHUR LOUIS III LENAHAN (MD MPH)
4800 Sand Point Way NE # Oc.7830
Seattle, WA 981053901
Phone: (206) 987-2000
Type: Location
1040 NW 22nd Ave Ste Ll030
Portland, OR 972103057
Phone: (503) 413-7702
Type: Location
PO BOX 4399
PORTLAND, OR 972084399
Phone:
Type: Mailing
501 N GRAHAM ST STE 330B
PORTLAND, OR 972272009
Phone: (503) 944-5970
Type: Location
2801 N Gantenbein Ave Fl 3
Portland, OR 972271623
Phone: (503) 276-9300
Type: Location
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 981053901
Phone: (206) 987-2000
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2024-10-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20241023000818 | I | Medical Genetics And Genomics | OR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 98105)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Pulmonary Disease, Internal Medicine | OR | |
| Endocrinology, Pediatric Medicine | OR | |
| Internal Medicine | OR | |
| - | OR | |
| Nurse Practitioner | OR | |
| Cardiovascular Disease (Cardiology) | OR | |
| - | OR | |
| - | OR | |
| - | WA | |
| Physician Assistant | OR |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.