Jeffrey A. Davis, MD
Psychiatry Physician · Fontana, CA
Jeffrey A. Davis, MD is a psychiatry physician with a practice address in Fontana, California, and NPI 1912055849, issued on Jan 8, 2007. Check the license (California G73938, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey A. Davis
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G73938 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-3910
- Enumerated
- Jan 8, 2007
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090202000609); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jeffrey A. Davis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G73938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average psychiatry physician in 2024
731 Medicare Part D claims for 111 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Duloxetine Hcl65 claims
- Sertraline Hcl65 claims
- Buspirone Hcl64 claims
- Venlafaxine Hcl Er60 claims
- Quetiapine Fumarate39 claims
- Bupropion Xl35 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupMontclair, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey A. Davis among 8,673 psychiatry physician records in California
Jeffrey A. Davis, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1990 · median 2005 among the 3,295 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 psychiatry physician records list a practice address in Fontana
They are 38 of the 3,012 NPPES records with a practice address in Fontana, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Fontana → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Karen Baghamian, MDFontana, CA 923351730237660
- Kalika Chander, MDFontana, CA 923351225197882
- Jeffrey Cheng, MDFontana, CA 923351801944822
- Natasha Cortes, D.O.Fontana, CA 923351588074090
- Jasvinder Kaur, MDFontana, CA 923351841359403
- Jeong KimFontana, CA 923351326270224
- Harry Lewis, MDFontana, CA 923351386703049
- Nagib Mikhael, MDFontana, CA 923351609935279
Common questions
What is Jeffrey A. Davis, MD's NPI number?
Jeffrey A. Davis, MD's National Provider Identifier (NPI) is 1912055849, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey A. Davis, MD located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-3910. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey A. Davis, MD's license?
NPPES lists California license number G73938, 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 Jeffrey A. Davis, MD prescribe under Medicare Part D?
In 2024, Jeffrey A. Davis, MD had 731 Medicare Part D claims for 111 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.