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MARK HOROWITZ MD
NPI 1881689008
Urology in Flushing, NY

Active since September 14, 2005PECOS EnrolledAccepts Medicare Assignment
5645 MAIN ST, W-LL300, FLUSHING, NY 11355(718) 445-0220(718) 939-1167 Get Directions Write a Review

NPPES record last updated: July 30, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mark Horowitz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK HOROWITZ MD (NPI 1881689008) is an individual urology provider in Flushing, New York, licensed in New York (172766) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (1986).

NPPES Registry Identity

NPI1881689008
Entity TypeIndividualMale
Primary Taxonomy208800000X
Provider Legal NameMARK HOROWITZCredential: MD
Location Address5645 MAIN ST, W-LL300Flushing, NY 11355-5045
Mailing Address5645 Main St, W-ll300Flushing, NY 11355-5045 · (718) 445-0220 · Fax (718) 939-1167
Phone(718) 445-0220
Fax(718) 939-1167
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1986
Enumeration DateSeptember 14, 2005
Last NPPES UpdateJuly 30, 2015
✔ NPI 1881689008 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians
Taxonomy Code208800000X
License✔ Licensed in NY · 172766
Definition
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Also ListedUrology · Pediatric UrologyTaxonomy 2088P0231X · License 172766 (NY)
5645 MAIN ST, Flushing, NY 11355
Open in Google Maps ↗

Other Identifiers 3

Medicaid01562707NY
Medicare PIN28J441NY
Medicare UPINF34038NY

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company), Oscar Health Maintenance Organization of Florida.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Horowitz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981697737
PECOS Enrollment IDI20040406001821
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Mark Horowitz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

New York Queens Medicine And Surgery, P.C.
Same address
Multi-Specialty
5645 MAIN ST
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
  • 645 clinicians in this Medicare group
NPI 1740792233 (718) 661-8706
Flushing Hospital & Medical Center
0.8 mi
General Acute Care Hospital
4500 PARSONS BLVD
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
  • 327 clinicians in this Medicare group
NPI 1548217763 (718) 670-6000
New York University
1,042 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 2,450 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11355 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.13 typical visit price
range $67.00 – $201.98
Typical copayment $38.28 (range $16.75 – $50.49)
Most-billed visit code 99204
Established Patient
$82.96 typical visit price
range $21.62 – $163.52
Typical copayment $20.74 (range $5.40 – $40.88)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANA M GHELECHKHANI PA
Physician Assistant (Medical)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2608
PEDRO XAVIER PALACIOS PA-C
Physician Assistant (Medical)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-1000
DR. OSCAR ROLDAN
Anesthesiology
5645 MAIN ST
FLUSHING, NY 11355
Queens County (646) 962-9930
ALEXIS TORRES RODRIGUEZ
Internal Medicine (Infectious Disease)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-1507
DR. BRENT HOCHSTEIN DO
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
DR. PRINCIE NANDINI ROY MD
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
ERIC CHROSTOWSKI
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
PETER JAESUNG JO
Nurse Practitioner (Family)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (917) 340-4637

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Horowitz's NPI number?

The NPI number for Mark Horowitz is 1881689008. It was assigned to this individual provider in the NPPES registry on September 14, 2005.

Where is Mark Horowitz located?

Mark Horowitz practices at 5645 Main St W-Ll300, Flushing, NY 11355. The listed phone number is (718) 445-0220.

What is Mark Horowitz's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is Mark Horowitz enrolled in Medicare?

Yes. Mark Horowitz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mark Horowitz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Horowitz reassigns Medicare benefits to 3 organizations: New York Queens Medicine And Surgery, P.C. (Flushing, NY), Flushing Hospital & Medical Center (Flushing, NY) and New York University (Boynton Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Horowitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Horowitz accept?

Health plans from Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and Oscar Health Maintenance Organization of Florida list Mark Horowitz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mark Horowitz was last updated on July 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.