NPPES file of Aug 9, 2026

Siobhan Katherine Cooper, M.D., MPH

Family Medicine Physician · Prineville, OR

Siobhan Katherine Cooper, M.D., MPH is a family medicine physician with a practice address in Prineville, Oregon, and NPI 1730479833, issued on Apr 11, 2011. Check the license (Oregon MD166362, 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
1730479833
Name
Siobhan Katherine Cooper
Credential
M.D., MPH
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD166362 OR
Self-reported in NPPES; status is on the state search
Practice location
384 SE Combs Flat RD, Prineville, OR 97754
Phone
(541) 447-8750
Enumerated
Apr 11, 2011
Record last updated
Sep 10, 2025
Fax
(541) 447-8428
Medicare enrollment
Enrolled (PECOS I20210826003276); accepts Medicare assignment
Medical or professional school
University Of Arkansas College Of Medicine, 2011
Telehealth
Offers telehealth (CMS)
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 384 SE Combs Flat RD

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

  1. Mohammad Abu Mallouh, PHARMDPharmacist1104548288
  2. Brandon Brasher, P.A.Medical Physician Assistant1629284641
  3. Marissa Bruno, DOFamily Medicine Physician1073262986
  4. Tracie Campbell, RDNRegistered Dietitian1568056687
  5. David Carne, MDSurgery Physician1811190622
  6. Daysha CrosierPhysician Assistant1942993837

Verify Siobhan Katherine Cooper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD166362    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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84% fewer Medicare Part D claims than the average family medicine physician in 2024

568 Medicare Part D claims for 141 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Siobhan Cooper568
  2. Specialty average3,544

Most prescribed

  1. Losartan Potassium45 claims
  2. Amlodipine Besylate34 claims
  3. Atorvastatin Calcium33 claims
  4. Risperidone30 claims
  5. Gabapentin21 claims
  6. Sertraline Hcl20 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. Bristol Bay Area Health CorporationDillingham, AK

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

12 family medicine physician records list a practice address in Prineville

They are 12 of the 391 NPPES records with a practice address in Prineville, and 2,847 family medicine physician records in Oregon.

All 12 in Prineville → All 2,847 in Oregon → Every provider in Prineville →

Other family medicine physician records in Oregon

  1. Roxana Abbott, DOPortland, OR1275799082
  2. David Abdun-Nur, M.D.Grants Pass, OR1396737847
  3. Traci Ackron, D.O.Hillsboro, OR1336588789
  4. Orlando Acosta, MDHood River, OR1912990375
  5. Michele Adamcak, D.O.Tigard, OR1114097227
  6. Standley Adamek, DOTigard, OR1144515230
  7. Harry Adamo, MDSpringfield, OR1235191412
  8. Allyson AdamsClackamas, OR1043899537
  9. Caroline Adams, MDGresham, OR1164840815
  10. Justin Adams, M.D.Medford, OR1760616866

Common questions

What is Siobhan Katherine Cooper, M.D., MPH's NPI number?

Siobhan Katherine Cooper, M.D., MPH's National Provider Identifier (NPI) is 1730479833, issued on Apr 11, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Siobhan Katherine Cooper, M.D., MPH located?

The NPPES record lists a practice address at 384 SE Combs Flat RD, Prineville, OR, 97754. Phone: (541) 447-8750. Providers update this record themselves, so call before visiting.

How can I verify Siobhan Katherine Cooper, M.D., MPH's license?

NPPES lists Oregon license number MD166362, 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 Siobhan Katherine Cooper, M.D., MPH prescribe under Medicare Part D?

In 2024, Siobhan Katherine Cooper, M.D., MPH had 568 Medicare Part D claims for 141 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.