Martin Zapata, D.O
Internal Medicine Physician · Norwalk, CA
Martin Zapata, D.O is an internal medicine physician with a practice address in Norwalk, California, and NPI 1689628240, issued on May 19, 2006. Check the license (California 20A8058, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Martin Zapata
- Credential
- D.O
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A8058 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11865 Firestone Blvd, Norwalk, CA 90650
- Phone
- (562) 806-1214
- Enumerated
- May 19, 2006
- Record last updated
- May 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (562) 806-1218
- Medicaid ID
- 1194924498 CA
- Medicare enrollment
- Enrolled (PECOS I20040205001309); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11865 Firestone Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Martin Zapata in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8.5 times the Medicare Part D claims of the average internal medicine physician in 2024
26,856 Medicare Part D claims for 1,003 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 586 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,580 claims
- Amlodipine Besylate1,128 claims
- Losartan Potassium875 claims
- Metformin Hcl857 claims
- Levothyroxine Sodium700 claims
- Famotidine686 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.
The MIPS final score for 2023 (Medicare payment program): 32.8 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).
Industry payments in 2024: $863.75
40 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Martin Zapata among 17,696 internal medicine physician records in California
Martin Zapata, D.O is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2001 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Norwalk → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alast AhmadiNorwalk, CA 906501962088799
- Lucita Cruz, MDNorwalk, CA 906501770526477
- Raymond Flores, MDNorwalk, CA 906501316967631
- Kenneth Lee, M.D.Norwalk, CA 906501831149475
- Surekha Mishal, M.D.Norwalk, CA 906501699817221
- Hung Phan, MDNorwalk, CA 906501447505284
- Rosa Reynaga, M.D.Norwalk, CA 906501689611311
- Aida Salatinjants, M.D.Norwalk, CA 906501962423467
Common questions
What is Martin Zapata, D.O's NPI number?
Martin Zapata, D.O's National Provider Identifier (NPI) is 1689628240, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Martin Zapata, D.O located?
The NPPES record lists a practice address at 11865 Firestone Blvd, Norwalk, CA, 90650. Phone: (562) 806-1214. Providers update this record themselves, so call before visiting.
How can I verify Martin Zapata, D.O's license?
NPPES lists California license number 20A8058, 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 Martin Zapata, D.O prescribe under Medicare Part D?
In 2024, Martin Zapata, D.O had 26,856 Medicare Part D claims for 1,003 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Martin Zapata, D.O's MIPS final score?
The 2023 MIPS final score is 32.8 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.