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NATHANIEL SERGAY MD
NPI 1609499052
Pediatrics in Brooklyn, NY

Active since May 20, 2020PECOS Enrolled
20 PLAZA ST E, BROOKLYN, NY 11238(718) 857-5500 Get Directions Write a Review

NPPES record last updated: September 18, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 18, 2024, May 20, 2020 (2 updates tracked since 2020).

About Nathaniel Sergay Md NPPES

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

NATHANIEL SERGAY MD (NPI 1609499052) is an individual pediatrics provider in Brooklyn, New York, licensed in New York (329849) and active in the NPI registry since May 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1609499052
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameNATHANIEL SERGAYCredential: MD
Location Address20 PLAZA ST EBrooklyn, NY 11238-4955
Mailing Address20 Plaza St EBrooklyn, NY 11238-4955
Phone(718) 857-5500
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMay 20, 2020
Last NPPES UpdateSeptember 18, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2024
✔ NPI 1609499052 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 329849
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.
20 PLAZA ST E, Brooklyn, NY 11238
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nathaniel Sergay Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8729449350
PECOS Enrollment IDI20251227000249
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 Reassignment

Medicare enrollment records show Nathaniel Sergay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New York University
1,035 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 11238 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 10

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

DR. ROBERT MURAYAMA-GREENBAUM MD
Internal Medicine
20 PLAZA ST E
BROOKLYN, NY 11238
Kings County (917) 626-4677
DINA M DIMAGGIO M.D.
Pediatrics
20 PLAZA ST E
BROOKLYN, NY 11238
Kings County (718) 857-5500
JILL STULTZ LCSW
Social Worker (Clinical)
20 PLAZA ST E, #E10
BROOKLYN, NY 11238
Kings County (917) 679-8403
DR. JENNIFER A OPPENHEIM M.D.
Pediatrics
20 PLAZA ST E, ROOM A7
BROOKLYN, NY 11238
Kings County (718) 857-5500
STEPHANIE ZIEGLER PNP-PC
Nurse Practitioner (Pediatrics)
20 PLAZA ST E
BROOKLYN, NY 11238
Kings County (718) 857-5500
DR. ELLEN C PUTTER MD
Pediatrics
20 PLAZA ST E, APT A7
BROOKLYN, NY 11238
Kings County (718) 857-5500
DR. FRANK ROSARIO ARONICA DPM
Podiatrist
20 PLAZA ST E
BROOKLYN, NY 11238
Kings County (718) 638-6387
MR. JONATHAN A HANFLING LMSW
Social Worker
20 PLAZA ST E, APT. B10
BROOKLYN, NY 11238
Kings County (718) 857-5190

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 Nathaniel Sergay's NPI number?

The NPI number for Nathaniel Sergay is 1609499052. It was assigned to this individual provider in the NPPES registry on May 20, 2020.

Where is Nathaniel Sergay located?

Nathaniel Sergay practices at 20 Plaza St E, Brooklyn, NY 11238. The listed phone number is (718) 857-5500.

What is Nathaniel Sergay's specialty?

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

Is Nathaniel Sergay enrolled in Medicare?

Yes. Nathaniel Sergay is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nathaniel Sergay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Sergay reassigns Medicare benefits to New York University (Boynton Beach, FL). The 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 Nathaniel Sergay'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 Nathaniel Sergay was last updated on September 18, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.