Maxwell Ethan Horowitz, DO
Endocrinology, Diabetes & Metabolism Physician · West Palm Beach, FL
Maxwell Ethan Horowitz, DO is an endocrinology, diabetes & metabolism physician with a practice address in West Palm Beach, Florida, and NPI 1922637420, issued on Apr 6, 2020. Check the license (Florida OS22188, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Maxwell Ethan Horowitz
- Credential
- DO
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- OS22188 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1515 N Flagler Dr Ste 430, West Palm Beach, FL 33401
- Phone
- (561) 659-6336
- Enumerated
- Apr 6, 2020
- Record last updated
- Aug 25, 2025
- Fax
- (561) 659-9353
- Medicare enrollment
- Enrolled (PECOS I20250702004557); accepts Medicare assignment
- Medical or professional school
- Touro Un Col Of Osteopathic Medicine, New York, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1515 N Flagler Dr Ste 430
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Morolake Amole, MDEndocrinology, Diabetes & Metabolism Physician1619362290
- Marisela BayonaRegistered Dietitian1922516111
- Jessica Cook, MS, RDRegistered Dietitian1326322173
- Alexis Da Silva, MDEndocrinology, Diabetes & Metabolism Physician1568857530
- Isel De La Torre, FNP-CNurse Practitioner1821830167
- Carol Kreider, APRNFamily Nurse Practitioner1063924769
Verify Maxwell Ethan Horowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS22188Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
601 Medicare Part D claims for 71 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Jardiance50 claims
- Atorvastatin Calcium49 claims
- Ozempic37 claims
- Alendronate Sodium30 claims
- Metformin Hcl29 claims
- Ultra-Fine Mini Pen Needle25 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.
Bills Medicare through one group practice
- Palm Beach Diabetes And Endocrine Specialists PAWest Palm Beach, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Florida
There are 656 endocrinology, diabetes & metabolism physician records in Florida.
Other endocrinology, diabetes & metabolism physician records in Florida
- Ejigayehu Abate, MDJacksonville, FL1679615116
- Susan Abend, M.D.Sarasota, FL1427003847
- Daisy Acevedo Morales, MDSouth Miami, FL1891938429
- Gonzalo Acosta, MDGainesville, FL1972025252
- Brenda Acosta Ashby, MDDoral, FL1366480386
- Adriane Adami, APRNPanama City, FL1265273775
- Omolara Adeniran, MDBrandon, FL1609429406
- Abosede Adeoshun, M.D.Rockledge, FL1033554902
- Motaz Agabani, MDSarasota, FL1750479952
- Anju Agarwal, M.D.Tallahassee, FL1164734620
Common questions
What is Maxwell Ethan Horowitz, DO's NPI number?
Maxwell Ethan Horowitz, DO's National Provider Identifier (NPI) is 1922637420, issued on Apr 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Maxwell Ethan Horowitz, DO located?
The NPPES record lists a practice address at 1515 N Flagler Dr Ste 430, West Palm Beach, FL, 33401. Phone: (561) 659-6336. Providers update this record themselves, so call before visiting.
How can I verify Maxwell Ethan Horowitz, DO's license?
NPPES lists Florida license number OS22188, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maxwell Ethan Horowitz, DO prescribe under Medicare Part D?
In 2024, Maxwell Ethan Horowitz, DO had 601 Medicare Part D claims for 71 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.