Jina Williams, FNP
Adult Medicine Physician · Vista, CA
Jina Williams, FNP is an adult medicine physician with a practice address in Vista, California, and NPI 1225500259, issued on Jan 2, 2019. Check the license (California NP95020624, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jina Williams
- Credential
- FNP
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License numbers
- NP95020624 CA
220421 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 134 Grapevine RD, Vista, CA 92083
- Phone
- (760) 631-5000
- Enumerated
- Jan 2, 2019
- Record last updated
- Jul 7, 2023
- Fax
- (760) 414-3892
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 386 in California → Look up another NPI →
Also registered at 134 Grapevine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Farzaneh Hassani, MDInternal Medicine Physician1942204979
Verify Jina Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license NP95020624Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average adult medicine physician in 2024
1,220 Medicare Part D claims for 150 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Amlodipine Besylate109 claims
- Atorvastatin Calcium84 claims
- Lisinopril74 claims
- Albuterol Sulfate Hfa47 claims
- Biktarvy46 claims
- Levothyroxine Sodium36 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: $553.61
25 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 664 providers of this specialty with any payment received $1,405.95 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.
Jina Williams among 386 adult medicine physician records in California
Jina Williams, FNP is one of 386 adult medicine physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2023 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in California
There are 386 adult medicine physician records in California.
All 386 in California → Every provider in Vista → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Lynette Easler-Silva, NURSE PRACTITIONERSan Marcos, CA 920781194600171
- Araceli TapiaSan Marcos, CA 920781821916917
- Hedieh Badkoobehi, M.D.Poway, CA 920641689708695
- Michael Cutler, M.D.Poway, CA 920641871620518
- Susan Bodtke, M.D.San Diego, CA 921031871729962
- Catherine Gagnon, NPSan Diego, CA 921031811125099
- George Delgado, M.DSan Diego, CA 921081083639470
- Laura Rubio, D.O.San Diego, CA 921111447674221
Common questions
What is Jina Williams, FNP's NPI number?
Jina Williams, FNP's National Provider Identifier (NPI) is 1225500259, issued on Jan 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Jina Williams, FNP located?
The NPPES record lists a practice address at 134 Grapevine RD, Vista, CA, 92083. Phone: (760) 631-5000. Providers update this record themselves, so call before visiting.
How can I verify Jina Williams, FNP's license?
NPPES lists California license number NP95020624, 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 Jina Williams, FNP prescribe under Medicare Part D?
In 2024, Jina Williams, FNP had 1,220 Medicare Part D claims for 150 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.