NPPES file of Aug 9, 2026

Christopher Barnett Baker, M.D.

Radiation Oncology Physician · Bozeman, MT

Christopher Barnett Baker, M.D. is a radiation oncology physician with a practice address in Bozeman, Montana, and NPI 1609223932, issued on May 17, 2016. Check the license (Montana MED-PHYS-LIC-127559, as entered in NPPES) on the Montana Board of Medical Examiners; 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
1609223932
Name
Christopher Barnett Baker
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
MED-PHYS-LIC-127559 MT
11393127-1205 UT
Self-reported in NPPES; status is on the state search
Practice location
931 Highland Blvd Ste 3130, Bozeman, MT 59715
Phone
(406) 414-5070
Enumerated
May 17, 2016
Record last updated
Jul 1, 2024
Fax
(406) 414-5029
Medicare enrollment
Enrolled (PECOS I20231026001908); accepts Medicare assignment
Medical or professional school
University Of Alabama School Of Medicine, 2018
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 931 Highland Blvd Ste 3130

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

  1. Sarah Adsit, PA-CMedical Physician Assistant1629301080
  2. Katelyn Armstrong, LCPCProfessional Counselor1942834726
  3. Cynthia Bacon, NPFamily Nurse Practitioner1821013160
  4. Tennille Baker, P.A.Medical Physician Assistant1811001290
  5. Kendall Child, CNPWomen's Health Nurse Practitioner1255300851
  6. William Conkright, MDHematology & Oncology Physician1316998362

Verify Christopher Barnett Baker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical Examiners
    Search for license MED-PHYS-LIC-127559
    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 Montana 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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23% fewer Medicare Part D claims than the average radiation oncology physician in 2024

103 Medicare Part D claims for 55 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Christopher Baker103
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl29 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.

Industry payments in 2024: $1,296.58

45 payments; by number, the most common kind was food and beverage; the largest payer was Philips North America LLC. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Christopher Baker$1,296.58
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Bozeman Radiation Oncology PCBozeman, MT

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

Christopher Barnett Baker among 24 radiation oncology physician records in Montana

Christopher Barnett Baker, M.D. is one of 24 radiation oncology physician records with a practice address in Montana. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 92% of them.

  • NPI issued2016 · 92% of these records are older, 4% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2018 · median 1997 among the 19 with a school on file
  • Record last updated2024 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Montana

There are 24 radiation oncology physician records in Montana.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Richard Belgrad, M.D.Bozeman, MT 597151023061488
  2. Elizabeth Tapen, MDBig Sky, MT 597161134108525
  3. Eugene Hughes, M.D.Butte, MT 597011952519761
  4. Marc Nash, MDButte, MT 597011205162922
  5. Katherine Markette, M.D.Missoula, MT 598021407806987
  6. Margaret Menendez, M.D.Missoula, MT 598021447208079
  7. Jeffrey Stephenson, MDMissoula, MT 598021053312900
  8. Michelle Proper, M.D.Missoula, MT 598041003088634

Common questions

What is Christopher Barnett Baker, M.D.'s NPI number?

Christopher Barnett Baker, M.D.'s National Provider Identifier (NPI) is 1609223932, issued on May 17, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Christopher Barnett Baker, M.D. located?

The NPPES record lists a practice address at 931 Highland Blvd Ste 3130, Bozeman, MT, 59715. Phone: (406) 414-5070. Providers update this record themselves, so call before visiting.

How can I verify Christopher Barnett Baker, M.D.'s license?

NPPES lists Montana license number MED-PHYS-LIC-127559, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Christopher Barnett Baker, M.D. prescribe under Medicare Part D?

In 2024, Christopher Barnett Baker, M.D. had 103 Medicare Part D claims for 55 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.