Mark Horowitz, MD
Mark Horowitz is a Urology Physician provider (Urology) practicing in Flushing, NY, registered in the NPPES registry with NPI 1881689008 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1881689008 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Horowitz |
| Credential | MD |
| Sex | Male |
| Practice address | 5645 MAIN ST, W-LL300, Flushing, NY, 11355 |
| Phone | 7184450220 |
| Fax | 7189391167 |
| Enumeration date | 2005-09-14 |
| Last updated in NPPES | 2015-07-30 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208800000X | Urology Physician | Primary | 172766 | NY |
| 2088P0231X | Pediatric Urology Physician | Secondary | 172766 | NY |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01562707 | Medicaid | NY | — |
Copy-ready billing details
Provider: Mark Horowitz, MD NPI: 1881689008 Taxonomy: 208800000X (Urology Physician) Address: 5645 MAIN ST, W-LL300, Flushing, NY, 11355
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1831195205 | Hamilton Shay | Individual | Anesthesiology Physician | Flushing, NY |
| 1740286574 | Mario Inglese | Individual | Certified Registered Nurse Anesthetist | Flushing, NY |
| 1871599506 | Kan Yu | Individual | Certified Registered Nurse Anesthetist | Flushing, NY |
| 1336146851 | Babatunji Omotoso | Individual | Anesthesiology Physician | Flushing, NY |
| 1336146539 | Carolyn Montaque | Individual | Certified Registered Nurse Anesthetist | Flushing, NY |
| 1144220674 | Majeed Sayeed | Individual | Cardiovascular Disease Physician | Flushing, NY |
| 1447252929 | Argante Grippa | Individual | Certified Registered Nurse Anesthetist | Flushing, NY |
| 1245226414 | Jeffrey Rosen | Individual | Sports Medicine (Orthopaedic Surgery) Physician | Flushing, NY |
Verify this record
Cross-check NPI 1881689008 against the authoritative CMS record: view Mark Horowitz on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-07-30.