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DR. LORNE WILLIAM WALKER M.D.
NPI 1588907398
Pediatrics - Pediatric Infectious Diseases in Portland, OR

Active since March 29, 2013PECOS EnrolledAccepts Medicare Assignment
3181 SW SAM JACKSON PARK RD, PORTLAND, OR 97239(503) 494-5476 Get Directions Write a Review

NPPES record last updated: August 6, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 6, 2020, Jul 31, 2020 (2 updates tracked since 2020).

About Dr. Lorne William Walker M.d. NPPES

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

DR. LORNE WILLIAM WALKER M.D. (NPI 1588907398) is an individual pediatric infectious diseases provider in Portland, Oregon, licensed in Oregon (MD200466) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2013).

NPPES Registry Identity

NPI1588907398
Entity TypeIndividualMale
Primary Taxonomy2080P0208X
Provider Legal NameDR. LORNE WILLIAM WALKERCredential: M.D.
Location Address3181 SW SAM JACKSON PARK RDPortland, OR 97239-3098
Mailing Address707 Sw Gaines Street, CdrcpPortland, OR 97239 · (503) 494-5476
Phone(503) 494-5476
Sole ProprietorNo
Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2013
Enumeration DateMarch 29, 2013
Last NPPES UpdateAugust 6, 20202 updates tracked since enumeration
NPPES CertifiedAugust 6, 2020
✔ NPI 1588907398 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
License✔ Licensed in OR · MD200466
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
Also ListedPediatricsTaxonomy 208000000X · License MD200466 (OR)
3181 SW SAM JACKSON PARK RD, Portland, OR 97239
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Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Lorne William Walker M.d. 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 ID9436442258
PECOS Enrollment IDI20200715003071
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Lorne Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Professional Services
Same address
Multi-Specialty
707 SW GAINES ST
Portland, OR 97239
  • Reassigned Medicare billing, Oregon enrollment
  • 2,212 clinicians in this Medicare group
NPI 1073767588 (503) 494-9000
St Clair Professional Services Inc
2,164 mi
Critical Care Medicine
1000 BOWER HILL RD
Pittsburgh, PA 15243
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 133 clinicians in this Medicare group
NPI 1326712050 (412) 942-4000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

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

DONALD RICHARD SULLIVAN MD
Internal Medicine (Pulmonary Disease)
3181 SW SAM JACKSON PARK RD, UHN67
PORTLAND, OR 97239
Multnomah County (503) 494-6949
MRS. ANJALEE NIX ROWE NP
Nurse Practitioner (Acute Care)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-3988
REEM HASAN MD
Internal Medicine
3181 SW SAM JACKSON PARK RD, PPV 350
PORTLAND, OR 97239
Multnomah County (503) 494-8562
DR. AMANDA D BALL PSY.D
Psychologist (Clinical)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-6176
SUNSHINE WELSCH LMT
Massage Therapist
3181 SW SAM JACKSON PARK RD, 7D19
PORTLAND, OR 97239
Multnomah County (503) 494-8349
DR. ROBERT GENE MEALER M.D., PH.D.
Psychiatry & Neurology (Psychiatry)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-6176
GREGORY HALL MD
Radiology (Diagnostic Radiology)
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 418-0990
DR. BURHAN AHMED MIAN MD
Student in an Organized Health Care Education/Training Program
3181 SW SAM JACKSON PARK RD
PORTLAND, OR 97239
Multnomah County (503) 494-8311

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 Lorne Walker's NPI number?

The NPI number for Lorne Walker is 1588907398. It was assigned to this individual provider in the NPPES registry on March 29, 2013.

Where is Lorne Walker located?

Lorne Walker practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-5476.

What is Lorne Walker's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Lorne Walker enrolled in Medicare?

Yes. Lorne Walker 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.

Which organizations bill Medicare for Lorne Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lorne Walker reassigns Medicare benefits to 2 organizations: University Professional Services (Portland, OR) and St Clair Professional Services Inc (Pittsburgh, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lorne Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lorne Walker accept?

Health plans from Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan list Lorne Walker 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 Lorne Walker was last updated on August 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.