Aya Eguchi, M.D.
Internal Medicine Physician · Patton, CA
Aya Eguchi, M.D. is an internal medicine physician with a practice address in Patton, California, and NPI 1578732541, issued on Feb 25, 2008. Check the license (California A106789, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aya Eguchi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A106789 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3102 E Highland Ave, Patton, CA 92369
- Phone
- (951) 425-7222
- Enumerated
- Feb 25, 2008
- Record last updated
- Sep 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20111012000140); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2007
- Entity
- Type 1 · individual
Also registered at 3102 E Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vanessa Acosta Michel, LCSW, MSWClinical Social Worker1386114544
- Maria Aparcero Suero, PH.D.Clinical Psychologist1265257885
- Shannon Bader, PHDClinical Psychologist1316266281
- Jason Bailie, PH.D.Clinical Neuropsychologist1932494432
- Emily BalandraStudent in an Organized Health Care Education/Training Program1427427319
- Rainer Bansuan, M.D.Adolescent Medicine (Family Medicine) Physician1336258037
Verify Aya Eguchi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106789Check 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 internal medicine physician in 2024
17 Medicare Part D claims, against an average of 3,176 among the 108,855 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
- Department OF State HospitalsPatton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
8 internal medicine physician records list a practice address in Patton
They are 8 of the 339 NPPES records with a practice address in Patton, and 17,696 internal medicine physician records in California.
All 8 in Patton → All 17,696 in California → Every provider in Patton →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Aya Eguchi, M.D.'s NPI number?
Aya Eguchi, M.D.'s National Provider Identifier (NPI) is 1578732541, issued on Feb 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Aya Eguchi, M.D. located?
The NPPES record lists a practice address at 3102 E Highland Ave, Patton, CA, 92369. Phone: (951) 425-7222. Providers update this record themselves, so call before visiting.
How can I verify Aya Eguchi, M.D.'s license?
NPPES lists California license number A106789, 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 Aya Eguchi, M.D. prescribe under Medicare Part D?
In 2024, Aya Eguchi, M.D. had 17 Medicare Part D claims; 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.