Madalyn Rivas
Internal Medicine Physician · Stockton, CA
Madalyn Rivas is an internal medicine physician with a practice address in Stockton, California, and NPI 1447830187, issued on Apr 8, 2021. Check the license (California A191983, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Madalyn Rivas
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A191983 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 N California St, Stockton, CA 95204
- Phone
- (209) 547-7717
- Enumerated
- Apr 8, 2021
- Record last updated
- Jun 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20241016003184); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1800 N California St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nariman AbediniPediatrics Physician1780260190
- Najiba Afzal, MDStudent in an Organized Health Care Education/Training Program1033978572
- Khaja AhmedPharmacist1982241709
- Nabeel Ahmed, MDStudent in an Organized Health Care Education/Training Program1083552780
- Savannah AibayeStudent in an Organized Health Care Education/Training Program1619508553
Verify Madalyn Rivas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A191983Check 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 internal medicine physician in 2024
33 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 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.
Industry payments in 2024: $70.49
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Bills Medicare through 2 group practices
- Galen Inpatient Physicians PCSimi Valley, CA
- Sutter Bay Medical FoundationLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Madalyn Rivas among 17,696 internal medicine physician records in California
Madalyn Rivas 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
89 internal medicine physician records list a practice address in Stockton
They are 89 of the 9,522 NPPES records with a practice address in Stockton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Stockton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tanveer Bajwa, M.D.Stockton, CA 952041871871681
- Cecelia Blawie, MDStockton, CA 952041245261742
- Richard Camacho, MDStockton, CA 952041649253881
- Dorothy Do-Williams, M.D.Stockton, CA 952041215237631
- Nivedita Doshi, M.D.Stockton, CA 952041417301987
- Aziz Kamali, M.D.Stockton, CA 952041306923883
- Mrinmayee Naik, M.D.Stockton, CA 952041639559081
- Sundar Natarajan, M.D.Stockton, CA 952041588794085
Common questions
What is Madalyn Rivas's NPI number?
Madalyn Rivas's National Provider Identifier (NPI) is 1447830187, issued on Apr 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Madalyn Rivas located?
The NPPES record lists a practice address at 1800 N California St, Stockton, CA, 95204. Phone: (209) 547-7717. Providers update this record themselves, so call before visiting.
How can I verify Madalyn Rivas's license?
NPPES lists California license number A191983, 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 Madalyn Rivas prescribe under Medicare Part D?
In 2024, Madalyn Rivas had 33 Medicare Part D claims for 16 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.