Stuart Fischer, M.D.
Cardiovascular Disease Physician · Los Alamitos, CA
Stuart Fischer, M.D. is a cardiovascular disease physician with a practice address in Los Alamitos, California, and NPI 1083656086, issued on Jun 12, 2006. Check the license (California G47229, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stuart Fischer
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- G47229 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5300 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 430-7533
- Enumerated
- Jun 12, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (562) 430-8055
- Medicaid ID
- 00G472290 CA
- Medicare enrollment
- Enrolled (PECOS I20061024000508); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 1979
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 5300 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlos ArguedasInternal Medicine Physician1023075579
- Ramandeep Brar, M.D.Cardiovascular Disease Physician1821165549
- Valerie Cacho, MDSleep Medicine (Internal Medicine) Physician1528296845
- Steven Forman, M.D.Cardiovascular Disease Physician1023059763
- Diana GlovaciCardiovascular Disease Physician1366805590
- Robert Lee, M.D.Interventional Cardiology Physician1861684201
Verify Stuart Fischer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G47229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,732 Medicare Part D claims for 217 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Eliquis168 claims
- Metoprolol Succinate158 claims
- Atorvastatin Calcium118 claims
- Carvedilol114 claims
- Metoprolol Tartrate94 claims
- Rosuvastatin Calcium77 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): 86.9 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: $1,242.11
65 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 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 one group practice
- Los Alamitos Internal Medical Group IncLos Alamitos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stuart Fischer among 2,574 cardiovascular disease physician records in California
Stuart Fischer, 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 fileYes · 68% of these records are
- Graduated1979 · median 1999 among the 1,742 with a school on file
- Record last updated2022 · 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 Los Alamitos → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Ramandeep Brar, M.D.Los Alamitos, CA 907201821165549
- Mark Castellanet, M.D.Los Alamitos, CA 907201538165782
- Steven Forman, M.D.Los Alamitos, CA 907201023059763
- Diana GlovaciLos Alamitos, CA 907201366805590
- Fernando Mendoza, M.D.Los Alamitos, CA 907201063637320
- Timothy O'Neill, M.D.Los Alamitos, CA 907201467493155
- Adrian Shandling, MDLos Alamitos, CA 907201386640522
- Bret Witter, M.D.Los Alamitos, CA 907201396783387
Common questions
What is Stuart Fischer, M.D.'s NPI number?
Stuart Fischer, M.D.'s National Provider Identifier (NPI) is 1083656086, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Fischer, M.D. located?
The NPPES record lists a practice address at 5300 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 430-7533. Providers update this record themselves, so call before visiting.
How can I verify Stuart Fischer, M.D.'s license?
NPPES lists California license number G47229, 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 Stuart Fischer, M.D. prescribe under Medicare Part D?
In 2024, Stuart Fischer, M.D. had 1,732 Medicare Part D claims for 217 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Stuart Fischer, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.9 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.