Fred Bayon, M.D.
Internal Medicine Physician · Vallejo, CA
Fred Bayon, M.D. is an internal medicine physician with a practice address in Vallejo, California, and NPI 1225031362, issued on May 23, 2005. Check the license (California G69611, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fred Bayon
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G69611 CA
Self-reported in NPPES; status is on the state search - Practice location
- 155 Glen Cove Marina RD E, Vallejo, CA 94591
- Phone
- (707) 558-8699
- Enumerated
- May 23, 2005
- Record last updated
- Dec 30, 2025
- Fax
- (707) 558-1864
- Medicare enrollment
- Enrolled (PECOS I20081113000190); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 155 Glen Cove Marina RD E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fred Bayon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% more Medicare Part D claims than the average internal medicine physician in 2024
4,492 Medicare Part D claims for 326 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 170 claims were for opioids.
Most prescribed
- Atorvastatin Calcium458 claims
- Amlodipine Besylate255 claims
- Olmesartan Medoxomil219 claims
- Lisinopril121 claims
- Levothyroxine Sodium117 claims
- Fluticasone Propionate109 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: $2,296.52
111 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Solano Primary Care Medical GroupVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fred Bayon among 17,696 internal medicine physician records in California
Fred Bayon, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
64 internal medicine physician records list a practice address in Vallejo
They are 64 of the 2,836 NPPES records with a practice address in Vallejo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Vallejo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Georgia Allen, DOVallejo, CA 945901508844796
- Linda Aragon, M.D.Mare Isle, CA 945921922082403
- Michael Clearfield, D.O.Vallejo, CA 945901689638561
- Cathleen Coulman, M.D.Vallejo, CA 945901689941171
- John MaloneVallejo, CA 945901366647513
- Mercedes Rivera, M.D.Vallejo, CA 945901730375841
- Robert Wiebe, M.D.Vallejo, CA 945921922049451
- Adebusola AdesinaVallejo, CA 945891386176139
Common questions
What is Fred Bayon, M.D.'s NPI number?
Fred Bayon, M.D.'s National Provider Identifier (NPI) is 1225031362, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Fred Bayon, M.D. located?
The NPPES record lists a practice address at 155 Glen Cove Marina RD E, Vallejo, CA, 94591. Phone: (707) 558-8699. Providers update this record themselves, so call before visiting.
How can I verify Fred Bayon, M.D.'s license?
NPPES lists California license number G69611, 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 Fred Bayon, M.D. prescribe under Medicare Part D?
In 2024, Fred Bayon, M.D. had 4,492 Medicare Part D claims for 326 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.