John Haile Peters, M.D.
Geriatric Medicine (Internal Medicine) Physician · Mather, CA
John Haile Peters, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Mather, California, and NPI 1497731806, issued on Dec 16, 2005. Check the license (California G46558, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Haile Peters
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- G46558 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10535 Hospital Way, Mather, CA 95655
- Phone
- (916) 843-7153
- Enumerated
- Dec 16, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (916) 364-0306
- Medicare enrollment
- Enrolled (PECOS I20101221000179); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 10535 Hospital Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anthony Albanese, M.D.Addiction Medicine (Internal Medicine) Physician1215910187
- Sarah AliPharmacist1851871503
- Shelby Alley, DPMFoot & Ankle Surgery Podiatrist1588928790
- Chibuzo Anyama, APRN PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1841059912
Verify John Haile Peters in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G46558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
56 Medicare Part D claims for 17 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
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
- Veterans Home OF CaliforniaYountville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Haile Peters among 532 geriatric medicine (internal medicine) physician records in California
John Haile Peters, M.D. is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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, 93% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated1978 · median 1999 among the 271 with a school on file
- Record last updated2026 · 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 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Mather → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Randall Goethals, M.D.Mather, CA 956551316920713
- Roxana Aminbakhsh, M.D.Folsom, CA 956301609970318
- Kathryn Amacher, DOVacaville, CA 956871366545568
- Michael Palchak, M.D.Davis, CA 956161316970338
- Carl Haller, MDCarmichael, CA 956081366552143
- Murray Batt, MDAuburn, CA 956021730292889
- Jennifer Heidmann, MDEureka, CA 955011790881332
- Celeste Sayles-Croy, DOEureka, CA 955011033565551
Common questions
What is John Haile Peters, M.D.'s NPI number?
John Haile Peters, M.D.'s National Provider Identifier (NPI) is 1497731806, issued on Dec 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Haile Peters, M.D. located?
The NPPES record lists a practice address at 10535 Hospital Way, Mather, CA, 95655. Phone: (916) 843-7153. Providers update this record themselves, so call before visiting.
How can I verify John Haile Peters, M.D.'s license?
NPPES lists California license number G46558, 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 Haile Peters, M.D. prescribe under Medicare Part D?
In 2024, John Haile Peters, M.D. had 56 Medicare Part D claims for 17 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.