NPPES file of Aug 9, 2026

Patricia M. Callahan, MD

Pediatrics Physician · Eugene, OR

Patricia M. Callahan, MD is a pediatrics physician with a practice address in Eugene, Oregon, and NPI 1023010543, issued on Aug 15, 2005. Check the license (Oregon MD221841, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023010543
Name
Patricia M. Callahan
Credential
MD
Primary taxonomy
Pediatrics Physician 208000000X
License numbers
MD221841 OR
4301081153 MI
52382 WI
Self-reported in NPPES; status is on the state search
Practice location
2830 Crescent Ave, Eugene, OR 97408
Phone
(541) 686-9000
Enumerated
Aug 15, 2005
Record last updated
Sep 19, 2025
Medicaid IDs
4657480 MI
4514404 MI
Medicare enrollment
Enrolled (PECOS I20241118002515); accepts Medicare assignment
Medical or professional school
West Virginia University School Of Medicine, 1999
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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8 nearest pediatrics physician records → All 861 in Oregon → Look up another NPI →

Also registered at 2830 Crescent Ave

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

  1. Gordon Anderson, MDFamily Medicine Physician1851379580
  2. Pamela Andresen, MDFamily Medicine Physician1841270360
  3. William Brus, M.D.Family Medicine Physician1427007632
  4. Clyde Byfield, MDFamily Medicine Physician1174503601
  5. Ann Holly Cannon, NPFamily Nurse Practitioner1124769823
  6. Lisette Collings, PA-CPhysician Assistant1619405305

Verify Patricia M. Callahan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD221841    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Oregon Healthcare Resources LLCEugene, OR

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

Patricia M. Callahan among 861 pediatrics physician records in Oregon

Patricia M. Callahan, MD is one of 861 pediatrics physician records with a practice address in Oregon. 20% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 87% newer
  • In a Medicare fileYes · 20% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated1999 · median 2013 among the 75 with a school on file
  • Record last updated2025 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatrics Physician providers in Oregon

There are 861 pediatrics physician records in Oregon.

All 861 in Oregon → Every provider in Eugene → Pediatrics Physician nationwide →

The 8 pediatrics physician records with the nearest ZIP codes

  1. Anita Geisler, MDEugene, OR 974081588634323
  2. Mary Holo, MDEugene, OR 974081952389884
  3. Craig Lash, MDEugene, OR 974081235128471
  4. Doug Livermore, MDEugene, OR 974081770561607
  5. Laura Sanderson, MDEugene, OR 974081972581593
  6. James Johnson, M.D.Eugene, OR 974051891045043
  7. Ami Bear, M.D.Eugene, OR 974031568787711
  8. Tamara Barstow, M.D.Eugene, OR 974021184696924

Common questions

What is Patricia M. Callahan, MD's NPI number?

Patricia M. Callahan, MD's National Provider Identifier (NPI) is 1023010543, issued on Aug 15, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Patricia M. Callahan, MD located?

The NPPES record lists a practice address at 2830 Crescent Ave, Eugene, OR, 97408. Phone: (541) 686-9000. Providers update this record themselves, so call before visiting.

How can I verify Patricia M. Callahan, MD's license?

NPPES lists Oregon license number MD221841, 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.

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.