John Peter Baron, D.O.
Nephrology Physician · Travis Afb, CA
John Peter Baron, D.O. is a nephrology physician with a practice address in Travis Afb, California, and NPI 1861471591, issued on Jan 11, 2006. Check the license (California 20A 10040, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Peter Baron
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 20A 10040 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 Bodin Cir, Travis Afb, CA 94535
- Phone
- (707) 423-3369
- Enumerated
- Jan 11, 2006
- Record last updated
- Jan 6, 2022
- Medicare enrollment
- Enrolled (PECOS I20081020000485); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Osteopathy, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 101 Bodin Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric Abram, IDMTIndependent Duty Medical Technicians1558595694
- Parag Agarwal, RPHPharmacist1043349012
- Aaron Agirre, DDS, MSPeriodontics1770863136
- Theresa Agosto-SmartClinical Social Worker1346749330
Verify John Peter Baron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 10040Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average nephrology physician in 2024
2,050 Medicare Part D claims for 361 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Farxiga334 claims
- Amlodipine Besylate230 claims
- Losartan Potassium196 claims
- Jardiance189 claims
- Furosemide127 claims
- Lisinopril112 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: $723.82
37 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- East Bay Nephrology Medical Group IncBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Peter Baron among 1,468 nephrology physician records in California
John Peter Baron, D.O. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2002 · median 2001 among the 1,128 with a school on file
- Record last updated2022 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Travis Afb → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Todd Bruno, M.D.Travis Afb, CA 945351407059702
- Madison Calder, MDFairfield, CA 945351336773571
- Fedoua Er Rbii, MDTravis Afb, CA 945351871150680
- Huyen Nguyen, M.D.Travis Afb, CA 945351528502895
- Jack Luo, MDFairfield, CA 945341851920854
- Steven Ong, MDFairfield, CA 945341225006349
- Oleg Rubin, MDFairfield, CA 945341790762763
- Steven Tolkan, MDFairfield, CA 945331871554766
Common questions
What is John Peter Baron, D.O.'s NPI number?
John Peter Baron, D.O.'s National Provider Identifier (NPI) is 1861471591, issued on Jan 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Peter Baron, D.O. located?
The NPPES record lists a practice address at 101 Bodin Cir, Travis Afb, CA, 94535. Phone: (707) 423-3369. Providers update this record themselves, so call before visiting.
How can I verify John Peter Baron, D.O.'s license?
NPPES lists California license number 20A 10040, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Peter Baron, D.O. prescribe under Medicare Part D?
In 2024, John Peter Baron, D.O. had 2,050 Medicare Part D claims for 361 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.