Maria Cristina Rizza, M.D.
Cardiovascular Disease Physician · Fountain Valley, CA
Maria Cristina Rizza, M.D. is a cardiovascular disease physician with a practice address in Fountain Valley, California, and NPI 1689638280, issued on Apr 12, 2006. Check the license (California A32775, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maria Cristina Rizza
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A32775 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9940 Talbert Ave, Fountain Valley, CA 92708
- Phone
- (714) 241-9070
- Enumerated
- Apr 12, 2006
- Record last updated
- Jun 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 241-1815
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 9940 Talbert Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eleanor Hawkins, M.D.Obstetrics & Gynecology Physician1235366949
Verify Maria Cristina Rizza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A32775Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
144 Medicare Part D claims for 37 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Losartan Potassium18 claims
- Ezetimibe13 claims
- Flecainide Acetate13 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.
Maria Cristina Rizza among 2,574 cardiovascular disease physician records in California
Maria Cristina Rizza, M.D. is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2020 · 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 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Fountain Valley → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Bao Bui, M.D.Fountain Valley, CA 927081801099593
- Simon Cheung, M.D.Fountain Valley, CA 927081841370210
- Amanda Donohue, D.O.Fountain Valley, CA 927081750587143
- Sarah Elsayed, M.D.Fountain Valley, CA 927081396049029
- Robert Greenfield, MDFountain Valley, CA 927081649307000
- Steven Le, M.D.Fountain Valley, CA 927081780835801
- Arvind Nirula, M.D.Fountain Valley, CA 927081437285095
- Sanjiv Patel, M.D.Fountain Valley, CA 927081982801718
Common questions
What is Maria Cristina Rizza, M.D.'s NPI number?
Maria Cristina Rizza, M.D.'s National Provider Identifier (NPI) is 1689638280, issued on Apr 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria Cristina Rizza, M.D. located?
The NPPES record lists a practice address at 9940 Talbert Ave, Fountain Valley, CA, 92708. Phone: (714) 241-9070. Providers update this record themselves, so call before visiting.
How can I verify Maria Cristina Rizza, M.D.'s license?
NPPES lists California license number A32775, 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 Maria Cristina Rizza, M.D. prescribe under Medicare Part D?
In 2024, Maria Cristina Rizza, M.D. had 144 Medicare Part D claims for 37 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.