Joni S. Zapata, MD
Family Medicine Physician · Northridge, CA
Joni S. Zapata, MD is a family medicine physician with a practice address in Northridge, California, and NPI 1417059510, issued on Sep 1, 2006. Check the license (California C50671, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joni S. Zapata
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C50671 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18406 Roscoe Blvd, Northridge, CA 91325
- Phone
- (818) 885-5480
- Enumerated
- Sep 1, 2006
- Record last updated
- Nov 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (818) 885-3515
- Medicaid ID
- 00C506710 CA
- Medicare enrollment
- Enrolled (PECOS I20110103000748); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 18406 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joni S. Zapata in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50671Check 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 family medicine physician in 2024
39 Medicare Part D claims for 14 beneficiaries, against an average of 3,544 among the 117,163 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Dignity Health Medical FoundationNorthridge, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joni S. Zapata among 17,133 family medicine physician records in California
Joni S. Zapata, MD 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
- Graduated1982 · median 2005 among the 10,652 with a school on file
- Record last updated2010 · 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).
55 family medicine physician records list a practice address in Northridge
They are 55 of the 2,598 NPPES records with a practice address in Northridge, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Northridge → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kathy Cairo, M.D.Northridge, CA 913251699878900
- Fausto Cordero, MDNorthridge, CA 913251124052477
- Pamela Davis, MDNorthridge, CA 913251386652196
- Elizabeth Eddy-Bertrand, MDNorthridge, CA 913251669573218
- Susan Hopkins, MDNorthridge, CA 913251700987369
- Viviana Ionescu-Tiba, MDNorthridge, CA 913251588737720
- Christopher Kuhlman, MDNorthridge, CA 913251629170006
- Hwe-Seung Lee, MDNorthridge, CA 913251083717391
Common questions
What is Joni S. Zapata, MD's NPI number?
Joni S. Zapata, MD's National Provider Identifier (NPI) is 1417059510, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joni S. Zapata, MD located?
The NPPES record lists a practice address at 18406 Roscoe Blvd, Northridge, CA, 91325. Phone: (818) 885-5480. Providers update this record themselves, so call before visiting.
How can I verify Joni S. Zapata, MD's license?
NPPES lists California license number C50671, 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 Joni S. Zapata, MD prescribe under Medicare Part D?
In 2024, Joni S. Zapata, MD had 39 Medicare Part D claims for 14 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Joni S. Zapata, MD's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.