Dean Nathanial Defrees, MD
Family Medicine Physician · Baker City, OR
Dean Nathanial Defrees, MD is a family medicine physician with a practice address in Baker City, Oregon, and NPI 1073924361, issued on May 8, 2014. Check the license on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Dean Nathanial Defrees
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MRM-1392 ID
Self-reported in NPPES; status is on the state search - Practice location
- 3950 17TH St Ste A, Baker City, OR 97814
- Phone
- (541) 523-1001
- Enumerated
- May 8, 2014
- Record last updated
- Jan 2, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (541) 523-1152
- Medicare enrollment
- Enrolled (PECOS I20170828001258); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 3950 17TH St Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mariana Flores, PA-CPhysician Assistant1548993538
- Jana ParkerCommunity Health Worker1386327153
- Gloria Turner, LCSWClinical Social Worker1174931182
Verify Dean Nathanial Defrees in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average family medicine physician in 2024
5,103 Medicare Part D claims for 448 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 283 claims were for opioids.
Most prescribed
- Atorvastatin Calcium395 claims
- Losartan Potassium225 claims
- Omeprazole185 claims
- Amlodipine Besylate180 claims
- Hydrocodone-Acetaminophen168 claims
- Lisinopril164 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 3 group practices
- Pine Eagle Health Planning CommitteeHalfway, OR
- St Lukes Clinic-Treasure Valley LLCBaker City, OR
- Wallowa County Health Care DistrictEnterprise, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dean Nathanial Defrees among 2,847 family medicine physician records in Oregon
Dean Nathanial Defrees, MD 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 2014, is newer than 73% of them.
- NPI issued2014 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2009 among the 1,671 with a school on file
- Record last updated2019 · 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).
14 family medicine physician records list a practice address in Baker City
They are 14 of the 396 NPPES records with a practice address in Baker City, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Baker City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Trisha Adams Eckman, MDBaker City, OR 978141831327063
- Randy Alanko, M.D.Baker City, OR 978141932309309
- Neil Carroll, MDBaker City, OR 978141427348507
- Logan Frederickson, DOBaker City, OR 978141609215573
- Eric Lamb, MDBaker City, OR 978141750379244
- Lisa Lanning, DOBaker City, OR 978141023207784
- Robert McKim, M.D.Baker City, OR 978141376577940
- Michael McQueen, MDBaker City, OR 978141497720460
Common questions
What is Dean Nathanial Defrees, MD's NPI number?
Dean Nathanial Defrees, MD's National Provider Identifier (NPI) is 1073924361, issued on May 8, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Dean Nathanial Defrees, MD located?
The NPPES record lists a practice address at 3950 17TH St Ste A, Baker City, OR, 97814. Phone: (541) 523-1001. Providers update this record themselves, so call before visiting.
How can I verify Dean Nathanial Defrees, MD's license?
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 Dean Nathanial Defrees, MD prescribe under Medicare Part D?
In 2024, Dean Nathanial Defrees, MD had 5,103 Medicare Part D claims for 448 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.