NPPES file of Aug 9, 2026

Rachel Karen Warren, M.D.

Surgery Physician · Portland, OR

Rachel Karen Warren, M.D. is a surgery physician with a practice address in Portland, Oregon, and NPI 1750640496, issued on May 15, 2012. Check the license (Oregon MD208885, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1750640496
Name
Rachel Karen Warren
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
MD208885 OR
Self-reported in NPPES; status is on the state search
Practice location
5050 NE Hoyt St Ste 256, Portland, OR 97213
Phone
(503) 239-7767
Enumerated
May 15, 2012
Record last updated
May 16, 2024
Fax
(503) 215-6897
Medicare enrollment
Enrolled (PECOS I20220606001919); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 2012
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5050 NE Hoyt St Ste 256

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sharif Ahmed, M.D.Hematology & Oncology Physician1629465554
  2. Michele Babicky, M.D.Surgical Oncology Physician1871742478
  3. Michael Dupre, ANPAdult Health Nurse Practitioner1154403491
  4. Kimberly Grady, PA-CPhysician Assistant1013466549
  5. Myung Sun KimHematology & Oncology Physician1639457583
  6. Robert Lufkin, D.O.Medical Oncology Physician1013932854

Verify Rachel Karen Warren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD208885    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oregon license search

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76% fewer Medicare Part D claims than the average surgery physician in 2024

36 Medicare Part D claims for 26 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 16 claims were for opioids.

  1. Rachel Warren36
  2. Specialty average147

Most prescribed

  1. Oxycodone Hcl12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Northwest Cancer Specialists PCPortland, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Surgery Physician providers in Oregon

There are 524 surgery physician records in Oregon.

All 524 in Oregon → Every provider in Portland →

Other surgery physician records in Oregon

  1. Pedro Abdala, MDStayton, OR1700415932
  2. Shaan Akhtar, M.D.Redmond, OR1790165876
  3. Shaghayegh Aliabadi, M.D.Portland, OR1083785562
  4. Julianne Allen, MDMedford, OR1467816363
  5. Carrie Allison, MDSalem, OR1548487184
  6. Steffan Anderson, M.D., PH.D.Florence, OR1336292549
  7. Taylor Anderson, MDPortland, OR1225614688
  8. John Antolik, MDOregon City, OR1417927351
  9. Stephen Archer, M.D.Bend, OR1699750307
  10. Benjamin Arndt, RNFASalem, OR1871156588

Common questions

What is Rachel Karen Warren, M.D.'s NPI number?

Rachel Karen Warren, M.D.'s National Provider Identifier (NPI) is 1750640496, issued on May 15, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Rachel Karen Warren, M.D. located?

The NPPES record lists a practice address at 5050 NE Hoyt St Ste 256, Portland, OR, 97213. Phone: (503) 239-7767. Providers update this record themselves, so call before visiting.

How can I verify Rachel Karen Warren, M.D.'s license?

NPPES lists Oregon license number MD208885, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Rachel Karen Warren, M.D. prescribe under Medicare Part D?

In 2024, Rachel Karen Warren, M.D. had 36 Medicare Part D claims for 26 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.