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DR. STUART MARC HOLZER M.D.
NPI 1053572404
Pediatrics - Pediatric Cardiology in East Setauket, NY

Active since June 18, 2008PECOS EnrolledAccepts Medicare Assignment
4 TECHNOLOGY DR, SUITE 250, EAST SETAUKET, NY 11733(631) 444-4601(631) 444-4990 Get Directions Write a Review

NPPES record last updated: April 28, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Stuart Marc Holzer M.d. NPPES

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

DR. STUART MARC HOLZER M.D. (NPI 1053572404) is an individual pediatric cardiology provider in East Setauket, New York, licensed in New York (255900) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Suny/stony Brook University Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2008).

NPPES Registry Identity

NPI1053572404
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NameDR. STUART MARC HOLZERCredential: M.D.
Location Address4 TECHNOLOGY DR, SUITE 250East Setauket, NY 11733-4080
Mailing AddressPo Box 1559Stony Brook, NY 11790-0989 · (631) 444-0650
Phone(631) 444-4601
Fax(631) 444-4990
Sole ProprietorYes
Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 2008
Enumeration DateJune 18, 2008
Last NPPES UpdateApril 28, 2015
✔ NPI 1053572404 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
License✔ Licensed in NY · 255900
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
4 TECHNOLOGY DR, East Setauket, NY 11733
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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 and accepts Medicare assignment

Dr. Stuart Marc Holzer M.d. 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 ID840418752
PECOS Enrollment IDI20140905000774
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 Stuart Holzer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Stony Brook Children's Service, University Faculty Practice Corporatio
2.2 mi
Pediatrics
SUNY @ STONY BROOK, HSC, L11, RM 020
Stony Brook, NY 11794
  • Reassigned Medicare billing, New York enrollment
  • 191 clinicians in this Medicare group
NPI 1083660575 (631) 444-1362

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Suny/Stony Brook University Hospital

Acute Care Hospitals · Stony Brook, NY
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number330393
LocationHealth Sciences Center SunyStony Brook, NY 11794 · Suffolk County
Emergency services Birthing friendly

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.

JAMES BERNASKO M.D
Obstetrics & Gynecology (Maternal & Fetal Medicine)
4 TECHNOLOGY DR, STONY BROOK UNIVERSITY PHYSICIANS
EAST SETAUKET, NY 11733
Suffolk County (631) 444-4686
DR. MELISSA STRAFFORD M.D.
Obstetrics & Gynecology
4 TECHNOLOGY DR
EAST SETAUKET, NY 11733
Suffolk County (631) 444-4686
CRISTIN ROSE GENGLER CPNP
Nurse Practitioner (Pediatrics)
4 TECHNOLOGY DR
EAST SETAUKET, NY 11733
Suffolk County (631) 444-2700
SETAUKET SURGERY, PC
Surgery
4 TECHNOLOGY DR, SUITE 220
EAST SETAUKET, NY 11733
Suffolk County (631) 476-9296
DR. JACK OATS M.D.
Ophthalmology
4 TECHNOLOGY DR, SUITE 150
EAST SETAUKET, NY 11733
Suffolk County (631) 941-1400
DR. JOHN R WITTPENN M.D.
Ophthalmology
4 TECHNOLOGY DR, SUITE 150
EAST SETAUKET, NY 11733
Suffolk County (631) 941-1400
NORTH SUFFOLK FAMILY MEDICAL CARE PLLC
Family Medicine (Adult Medicine)
4 TECHNOLOGY DR, SUITE 210
EAST SETAUKET, NY 11733
Suffolk County (631) 331-1506
KARIM A PARACHA PHYSICIAN PC
Surgery
4 TECHNOLOGY DR, SUITE 240
EAST SETAUKET, NY 11733
Suffolk County (631) 675-6865

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 Stuart Holzer's NPI number?

The NPI number for Stuart Holzer is 1053572404. It was assigned to this individual provider in the NPPES registry on June 18, 2008.

Where is Stuart Holzer located?

Stuart Holzer practices at 4 Technology Dr Suite 250, East Setauket, NY 11733. The listed phone number is (631) 444-4601.

What is Stuart Holzer's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Stuart Holzer enrolled in Medicare?

Yes. Stuart Holzer 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 organization bills Medicare for Stuart Holzer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stuart Holzer reassigns Medicare benefits to Stony Brook Children's Service, University Faculty Practice Corporatio (Stony Brook, NY). 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 Stuart Holzer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stuart Holzer affiliated with any hospitals?

According to CMS data, Stuart Holzer is affiliated with Suny/Stony Brook University Hospital.

When was this NPI record last updated?

The NPPES record for Stuart Holzer was last updated on April 28, 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.