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DR. REGAN MON LOOK M.D.
NPI 1821091604
Internal Medicine - Medical Oncology in Portland, OR

Active since May 24, 2005PECOS Enrolled
265 N BROADWAY ST, PORTLAND, OR 97227(503) 280-1223(503) 528-5252 Get Directions Write a Review

NPPES record last updated: December 22, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Regan Mon Look M.d. NPPES

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

DR. REGAN MON LOOK M.D. (NPI 1821091604) is an individual medical oncology provider in Portland, Oregon, licensed in Oregon (MD20544) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821091604
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. REGAN MON LOOKCredential: M.D.
Location Address265 N BROADWAY STPortland, OR 97227-1800
Mailing Address265 N Broadway StPortland, OR 97227-1800 · (503) 280-1223 · Fax (503) 528-5252
Phone(503) 280-1223
Fax(503) 528-5252
Sole ProprietorNo
Enumeration DateMay 24, 2005
Last NPPES UpdateDecember 22, 2011
✔ NPI 1821091604 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in OR · MD20544
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
265 N BROADWAY ST, Portland, OR 97227
Open in Google Maps ↗

Other Identifiers 5

Medicaid150403OR
Medicare PIN105523OR
Medicare PING8888669WA
Medicare UPING51611OR
Medicaid1019827WA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Regan Mon Look M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Regan Look reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwest Cancer Specialists PC
9.7 mi
Hematology & Oncology
1498 SE TECH CENTER PL, SUITE 240
Vancouver, WA 98683
  • Reassigned Medicare billing, Washington enrollment
  • 51 clinicians in this Medicare group
NPI 1407828114 (360) 597-1300
Signify Health Medical Associates, PLLC
1,625 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Washington enrollment
  • 317 clinicians in this Medicare group
NPI 1750845863 (972) 715-3800

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97227 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$176.88 typical visit price
range $58.99 – $176.88
Typical copayment $44.22 (range $14.74 – $44.22)
Most-billed visit code 99205
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

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

DR. GREGORY ALAN PATTON M.D.
Radiology (Radiation Oncology)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 528-5013
DR. ANGELA KALISIAK M.D.
Internal Medicine (Hospice and Palliative Medicine)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
DR. TONY V HO MD
Internal Medicine (Hematology & Oncology)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
VANESSA KATHLEEN SANNE RN, FNP-C
Nurse Practitioner (Family)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
DR. NICOLAAS W DE WETTE M.D.
Radiology (Radiation Oncology)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
DR. RALPH ELLIOTT WEINSTEIN M.D.
Internal Medicine (Hematology & Oncology)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
DR. SPENCER HSIAO-YANG SHAO M.D.
Internal Medicine (Medical Oncology)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 280-1223
JENNIFER HOPE CHRISTIANSEN P.A.
Physician Assistant (Surgical)
265 N BROADWAY ST
PORTLAND, OR 97227
Multnomah County (503) 274-4885

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 Regan Look's NPI number?

The NPI number for Regan Look is 1821091604. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Where is Regan Look located?

Regan Look practices at 265 N Broadway St, Portland, OR 97227. The listed phone number is (503) 280-1223.

What is Regan Look's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Regan Look enrolled in Medicare?

Yes. Regan Look is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Regan Look's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Regan Look reassigns Medicare benefits to 2 organizations: Northwest Cancer Specialists PC (Vancouver, WA) and Signify Health Medical Associates, PLLC (Dallas, TX). 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 Regan Look's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Regan Look was last updated on December 22, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.