Tamara B. Horwich, MD
Cardiovascular Disease Physician · Los Angeles, CA
Tamara B. Horwich, MD is a cardiovascular disease physician with a practice address in Los Angeles, California, and NPI 1346281748, issued on Jun 9, 2006. Check the license (California A73443, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tamara B. Horwich
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A73443 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10833 LE Conte Ave, Los Angeles, CA 90095
- Phone
- (310) 825-8816
- Enumerated
- Jun 9, 2006
- Record last updated
- Sep 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20060829000215); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 10833 LE Conte Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tamara B. Horwich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73443Check 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
1,715 Medicare Part D claims for 193 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Metoprolol Succinate161 claims
- Amlodipine Besylate141 claims
- Rosuvastatin Calcium117 claims
- Atorvastatin Calcium90 claims
- Ezetimibe84 claims
- Eliquis66 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 practice group's MIPS final score for 2023 (Medicare payment program): 86.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $5,812.50
3 payments; by number, the most common kind was consulting fee; the largest payer was Novo Nordisk Inc. 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
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamara B. Horwich among 2,574 cardiovascular disease physician records in California
Tamara B. Horwich, MD 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
- Graduated1999 · median 1999 among the 1,742 with a school on file
- Record last updated2012 · 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 Angeles → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Jesus Araujo, MDLos Angeles, CA 900951518990639
- Donald Chang, MD, MPHLos Angeles, CA 900951861427643
- Fabian Chen, MDLos Angeles, CA 900951427083328
- John Child, MDLos Angeles, CA 900951336173640
- Shelly Cote, NPLos Angeles, CA 900951306871009
- Jesse Currier, MDLos Angeles, CA 900951205852100
- Linda Demer, MDLos Angeles, CA 900951437184157
- Leslie Eber, MDLos Angeles, CA 900951043235203
Common questions
What is Tamara B. Horwich, MD's NPI number?
Tamara B. Horwich, MD's National Provider Identifier (NPI) is 1346281748, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tamara B. Horwich, MD located?
The NPPES record lists a practice address at 10833 LE Conte Ave, Los Angeles, CA, 90095. Phone: (310) 825-8816. Providers update this record themselves, so call before visiting.
How can I verify Tamara B. Horwich, MD's license?
NPPES lists California license number A73443, 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 Tamara B. Horwich, MD prescribe under Medicare Part D?
In 2024, Tamara B. Horwich, MD had 1,715 Medicare Part D claims for 193 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Tamara B. Horwich, MD's MIPS final score?
The 2023 MIPS final score is 86.1 of 100, reported for the practice group. 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.