1. Home
  2. Directory
  3. New York
  4. Brooklyn
  5. Pediatrics
  6. NPI Profile

MARK FENSTER
NPI 1376566620
Pediatrics in Brooklyn, NY

Active since July 26, 2006PECOS Enrolled
2601 OCEAN PKWY, BROOKLYN, NY 11235(718) 616-4408(718) 616-4105 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mark Fenster NPPES

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

MARK FENSTER (NPI 1376566620) is an individual pediatrics provider in Brooklyn, New York, licensed in New York (172975-1) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1376566620
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameMARK FENSTER
Location Address2601 OCEAN PKWYBrooklyn, NY 11235-7745
Mailing Address3 Heather LnLawrence, NY 11559-1833 · (516) 239-2677
Phone(718) 616-4408
Fax(718) 616-4105
Sole ProprietorNo
Enumeration DateJuly 26, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1376566620 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 172975-1
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
2601 OCEAN PKWY, Brooklyn, NY 11235
Open in Google Maps ↗

Other Identifiers 3

Medicaid01086915NY
Medicare UPINA61410NY
Medicare ID-Type Unspecified23E37NY

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Fenster is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Mark Fenster reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Coney Island Medical Practice Plan, P.C.
Same address
General Practice
2601 OCEAN PKWY
Brooklyn, NY 11235
  • Reassigned Medicare billing, New York enrollment
  • 638 clinicians in this Medicare group
NPI 1386951762 (718) 616-5354
Physician Affiliate Group Of New York PC
16 mi
Dietitian, Registered
506 LENOX AVE
New York, NY 10037
  • Reassigned Medicare billing, New York enrollment
  • 2,094 clinicians in this Medicare group
NPI 1013375526 (212) 939-2467

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 11235 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
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.

LEYLA DAHBALI PA
Physician Assistant
2601 OCEAN PKWY, 8TH FLOOR ROOM 8N53
BROOKLYN, NY 11235
Kings County (718) 616-3260
DIMITRI LIVSHITS DO
Emergency Medicine
2601 OCEAN PKWY
BROOKLYN, NY 11235
Kings County (718) 616-3000
SAMIRA DUJA
Pharmacist
2601 OCEAN PKWY, 2N1D - INPATIENT PHARMACY
BROOKLYN, NY 11235
Kings County (718) 616-3636
RAJWOANA AHMED PHARMD
Pharmacist
2601 OCEAN PKWY
BROOKLYN, NY 11235
Kings County (718) 616-3000
RACHEL PASTERNAK
Physician Assistant
2601 OCEAN PKWY
BROOKLYN, NY 11235
Kings County (718) 616-3000
ARISTOTLE JOHN LYSSIKATOS DDS
Dentist (General Practice)
2601 OCEAN PKWY
BROOKLYN, NY 11235
Kings County (718) 319-4339
MS. ELIZABETH A CLEARY BS
Pharmacist
2601 OCEAN PKWY, PHARMACY DEPARTMENT
BROOKLYN, NY 11235
Kings County (718) 616-4080
DR. OLUFEMI OGUNSEMI DDS
Student in an Organized Health Care Education/Training Program
2601 OCEAN PKWY
BROOKLYN, NY 11235
Kings County (718) 449-1889

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 Fenster's NPI number?

The NPI number for Mark Fenster is 1376566620. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Mark Fenster located?

Mark Fenster practices at 2601 Ocean Pkwy, Brooklyn, NY 11235. The listed phone number is (718) 616-4408.

What is Mark Fenster's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mark Fenster enrolled in Medicare?

Yes. Mark Fenster is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Fenster's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fenster reassigns Medicare benefits to 2 organizations: Coney Island Medical Practice Plan, P.C. (Brooklyn, NY) and Physician Affiliate Group Of New York PC (New York, NY). 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 Fenster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Fenster was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.