Brian Harris Horwich, MD
Gastroenterology Physician · Santa Monica, CA
Brian Harris Horwich, MD is a gastroenterology physician with a practice address in Santa Monica, California, and NPI 1073058087, issued on Dec 29, 2016. Check the license (California A164684, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Harris Horwich
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A164684 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1223 16TH St Ste 3100, Santa Monica, CA 90404
- Phone
- (310) 582-6240
- Enumerated
- Dec 29, 2016
- Record last updated
- Aug 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20250617003816); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1223 16TH St Ste 3100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mercedes Avila, FNP-BCNurse Practitioner1467231829
- Audrey Joan Cano, FNP-BCPrimary Care Nurse Practitioner1154987634
- Vivy CusumanoGastroenterology Physician1639600638
- Angela Doan, NPNurse Practitioner1639638968
- Tiffany JuClinical Psychologist1033786645
- Amy Kusske, MDSurgery Physician1598743700
Verify Brian Harris Horwich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A164684Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average gastroenterology physician in 2024
87 Medicare Part D claims for 28 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Famotidine25 claims
- Omeprazole13 claims
- Pantoprazole Sodium13 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.
Industry payments in 2024: $104.76
3 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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 CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
Other gastroenterology physician records in California
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Brian Harris Horwich, MD's NPI number?
Brian Harris Horwich, MD's National Provider Identifier (NPI) is 1073058087, issued on Dec 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Brian Harris Horwich, MD located?
The NPPES record lists a practice address at 1223 16TH St Ste 3100, Santa Monica, CA, 90404. Phone: (310) 582-6240. Providers update this record themselves, so call before visiting.
How can I verify Brian Harris Horwich, MD's license?
NPPES lists California license number A164684, 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 Brian Harris Horwich, MD prescribe under Medicare Part D?
In 2024, Brian Harris Horwich, MD had 87 Medicare Part D claims for 28 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.