Jay A. Ferns, D.O.
Family Medicine Physician · Temecula, CA
Jay A. Ferns, D.O. is a family medicine physician with a practice address in Temecula, California, and NPI 1003911892, issued on Sep 14, 2006. Check the license (California 20A6131, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jay A. Ferns
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A6131 CA
Self-reported in NPPES; status is on the state search - Practice location
- 29738 Rancho California RD, Temecula, CA 92591
- Phone
- (951) 308-1822
- Enumerated
- Sep 14, 2006
- Record last updated
- Nov 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (951) 699-6734
- Medicare enrollment
- Enrolled (PECOS I20050715001054); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 29738 Rancho California RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Meghan Andrews, WHNP, CNMWomen's Health Nurse Practitioner1194146696
Verify Jay A. Ferns in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A6131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family medicine physician in 2024
629 Medicare Part D claims for 49 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium62 claims
- Amlodipine Besylate29 claims
- Alprazolam28 claims
- Atorvastatin Calcium28 claims
- Levothyroxine Sodium26 claims
- Lorazepam18 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 GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jay A. Ferns among 17,133 family medicine physician records in California
Jay A. Ferns, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 family medicine physician records list a practice address in Temecula
They are 80 of the 4,057 NPPES records with a practice address in Temecula, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Temecula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alwin Bagingito, M.D.Temecula, CA 925911821172065
- Kelly Boyatt, M.D.Temecula, CA 925911295784130
- Roland Fuertez, M.D.Temecula, CA 925911952475428
- Erik Lundquist, M.D.Temecula, CA 925911508845181
- Karen Muchowski, MDTemecula, CA 925911699791178
- James Nevins, M.D.Temecula, CA 925911285696534
- Consuelo Ocampo, MDTemecula, CA 925911952408981
- Kristin Olah, M.D.Temecula, CA 925911811970916
Common questions
What is Jay A. Ferns, D.O.'s NPI number?
Jay A. Ferns, D.O.'s National Provider Identifier (NPI) is 1003911892, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jay A. Ferns, D.O. located?
The NPPES record lists a practice address at 29738 Rancho California RD, Temecula, CA, 92591. Phone: (951) 308-1822. Providers update this record themselves, so call before visiting.
How can I verify Jay A. Ferns, D.O.'s license?
NPPES lists California license number 20A6131, 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 Jay A. Ferns, D.O. prescribe under Medicare Part D?
In 2024, Jay A. Ferns, D.O. had 629 Medicare Part D claims for 49 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.