Stephen Horowitz, D.D.S.
Periodontics · Marina Del Rey, CA
Stephen Horowitz, D.D.S. is a periodontics with a practice address in Marina Del Rey, California, and NPI 1235331018, issued on Jun 4, 2007. Check the license (California 46191, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Horowitz
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 46191 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4676 Admiralty Way, Marina Del Rey, CA 90292
- Phone
- (310) 577-5888
- Enumerated
- Jun 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 577-5886
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 4676 Admiralty Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madiah Ashraf, MDNeurology Physician1568925642
- Eunice Kaplan, LCSWMental Health Counselor1467516195
Verify Stephen Horowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 46191Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% more Medicare Part D claims than the average periodontics in 2024
516 Medicare Part D claims for 114 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. 104 claims were for opioids.
Most prescribed
- Chlorhexidine Gluconate137 claims
- Amoxicillin130 claims
- Ibuprofen87 claims
- Acetaminophen-Codeine54 claims
- Tramadol Hcl26 claims
- Hydrocodone-Acetaminophen19 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: $37.22
2 payments; by number, the most common kind was food and beverage; the largest payer was OraPharma, a division of Bausch Health US, LLC. The 2,966 providers of this specialty with any payment received $1,338.41 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.
Stephen Horowitz among 929 periodontics records in California
Stephen Horowitz, D.D.S. is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 29% of them.
- NPI issued2007 · 29% of these records are older, 40% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California.
All 929 in California → Every provider in Marina Del Rey → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Michael Homayun, DDSMarina Del Rey, CA 902921326260597
- Daniel Teboul, DDSSouth Gate, CA 902801770617003
- Ellen Hayashi, D.D.S.Redondo Beach, CA 902771841407772
- Farangis Partovi, DDSRancho Palos Verdes, CA 902751821181843
- Maria Carmen Ramos, DMDManhattan Beach, CA 902661689720633
- Gerald Drury, DDSHermosa Beach, CA 902541093937062
- Nima Natanzi, DDSHawthorne, CA 902501780255794
- Seyed Hossein Bassir, D.D.SGardena, CA 902471588098628
Common questions
What is Stephen Horowitz, D.D.S.'s NPI number?
Stephen Horowitz, D.D.S.'s National Provider Identifier (NPI) is 1235331018, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Horowitz, D.D.S. located?
The NPPES record lists a practice address at 4676 Admiralty Way, Marina Del Rey, CA, 90292. Phone: (310) 577-5888. Providers update this record themselves, so call before visiting.
How can I verify Stephen Horowitz, D.D.S.'s license?
NPPES lists California license number 46191, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stephen Horowitz, D.D.S. prescribe under Medicare Part D?
In 2024, Stephen Horowitz, D.D.S. had 516 Medicare Part D claims for 114 beneficiaries; the average among periodontics prescribers was 277. 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.