Stuart Horowitz, DO
Family Medicine Physician · Massapequa, NY
Stuart Horowitz, DO is a family medicine physician with a practice address in Massapequa, New York, and NPI 1972661155, issued on Dec 4, 2006. Check the license (New York 134589, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stuart Horowitz
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 134589 NY
Self-reported in NPPES; status is on the state search - Practice location
- 99 Grand Ave, Massapequa, NY 11758
- Phone
- (516) 541-9700
- Enumerated
- Dec 4, 2006
- Record last updated
- May 16, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (516) 798-1086
- Medicaid ID
- 315206 NY
- Medicare enrollment
- Enrolled (PECOS I20050201000949); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1977
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 99 Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carl Boris, D.O.Family Medicine Physician1194883793
- Steven Canarick, D.M.D.,F.A.G.D.Dentist1194049015
- Amy Sacher-Goldstein, D.O.Family Medicine Physician1700944352
Verify Stuart Horowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 134589Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% more Medicare Part D claims than the average family medicine physician in 2024
6,458 Medicare Part D claims for 533 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 53 claims were for opioids.
Most prescribed
- Metoprolol Succinate540 claims
- Atorvastatin Calcium399 claims
- Rosuvastatin Calcium283 claims
- Losartan-Hydrochlorothiazide255 claims
- Omeprazole193 claims
- Losartan Potassium184 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: $1,677.94
72 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Ronald C Fagan MD PCFarmingdale, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stuart Horowitz among 6,417 family medicine physician records in New York
Stuart Horowitz, DO is one of 6,417 family medicine physician records with a practice address in New York. 81% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1977 · median 2007 among the 4,188 with a school on file
- Record last updated2008 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 family medicine physician records list a practice address in Massapequa
They are 16 of the 1,195 NPPES records with a practice address in Massapequa, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Massapequa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Atkinson, DOMassapequa, NY 117581154493294
- Precious Bamawo, FNPMassapequa, NY 117581447549894
- Joseph Baselious, MDMassepequa, NY 117581982777082
- Richard Bebirian, DOMassapequa, NY 117581487626289
- Carl Boris, D.O.Massapequa, NY 117581194883793
- John Dimartino, MDMassapequa, NY 117581104901057
- Teresa Esposito, DOMassapequa, NY 117581033265244
- Troy Fabregas, M.D.N Massapequa, NY 117581275620999
Common questions
What is Stuart Horowitz, DO's NPI number?
Stuart Horowitz, DO's National Provider Identifier (NPI) is 1972661155, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Horowitz, DO located?
The NPPES record lists a practice address at 99 Grand Ave, Massapequa, NY, 11758. Phone: (516) 541-9700. Providers update this record themselves, so call before visiting.
How can I verify Stuart Horowitz, DO's license?
NPPES lists New York license number 134589, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stuart Horowitz, DO prescribe under Medicare Part D?
In 2024, Stuart Horowitz, DO had 6,458 Medicare Part D claims for 533 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.