Brock T. Trejo, M.D.
Family Medicine Physician · Klamath Falls, OR
Brock T. Trejo, M.D. is a family medicine physician with a practice address in Klamath Falls, Oregon, and NPI 1841556099, issued on Apr 2, 2012. Check the license (Oregon MD163376, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brock T. Trejo
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD163376 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2821 Daggett Ave Ste 200, Klamath Falls, OR 97601
- Phone
- (541) 274-8400
- Enumerated
- Apr 2, 2012
- Record last updated
- Feb 11, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (541) 274-8405
- Medicare enrollment
- Enrolled (PECOS I20150930002628); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 2821 Daggett Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison Berardino, NP-CFamily Nurse Practitioner1801268636
- Hanah BerhaneAdult Health Nurse Practitioner1235782970
- Jerri Britsch, M.D,Family Medicine Physician1124161104
- Darcy Butcher, FNPCFamily Nurse Practitioner1083614630
- Stewart DeckerFamily Medicine Physician1417375015
- Lorena Espinoza, FNPFamily Nurse Practitioner1801685953
Verify Brock T. Trejo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD163376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,108 Medicare Part D claims for 526 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 250 claims were for opioids.
Most prescribed
- Atorvastatin Calcium511 claims
- Amlodipine Besylate412 claims
- Levothyroxine Sodium320 claims
- Omeprazole291 claims
- Lisinopril272 claims
- Metoprolol Succinate193 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
- Sky Lakes Medical Center IncKlamath Falls, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brock T. Trejo among 2,847 family medicine physician records in Oregon
Brock T. Trejo, M.D. is one of 2,847 family medicine physician records with a practice address in Oregon. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 30% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2012 · median 2009 among the 1,671 with a school on file
- Record last updated2020 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
69 family medicine physician records list a practice address in Klamath Falls
They are 69 of the 1,946 NPPES records with a practice address in Klamath Falls, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Klamath Falls → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kathleen Bakke, M.D.Klamath Falls, OR 976011306891189
- Carl Barbee, MDKlamath Falls, OR 976011790723658
- Charles Bury, MDKlamath Falls, OR 976011174511810
- James Calvert, MDKlamath Falls, OR 976011477578961
- Ralph Eccles, D.OKlamath Falls, OR 976011659304459
- Alden Glidden, M.D.Klamath Falls, OR 976011386691897
- Joyce Hollander-Rodriguez, MDKlamath Falls, OR 976011649219882
- Robert Jackman, MDKlamath Falls, OR 976011922047612
Common questions
What is Brock T. Trejo, M.D.'s NPI number?
Brock T. Trejo, M.D.'s National Provider Identifier (NPI) is 1841556099, issued on Apr 2, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Brock T. Trejo, M.D. located?
The NPPES record lists a practice address at 2821 Daggett Ave Ste 200, Klamath Falls, OR, 97601. Phone: (541) 274-8400. Providers update this record themselves, so call before visiting.
How can I verify Brock T. Trejo, M.D.'s license?
NPPES lists Oregon license number MD163376, 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 Brock T. Trejo, M.D. prescribe under Medicare Part D?
In 2024, Brock T. Trejo, M.D. had 8,108 Medicare Part D claims for 526 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.
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.