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DR. CHRISTOPHER JAMES DEMAREE MD, MS
NPI 1225693823
Surgery - Surgical Critical Care in Brooklyn, NY

Active since May 08, 2019PECOS EnrolledAccepts Medicare Assignment
450 CLARKSON AVENUE, DEPARTMENT OF SURGERY, BROOKLYN, NY 11203(718) 270-1421 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2026, May 8, 2019 (2 updates tracked since 2019).

About Dr. Christopher James Demaree Md, Ms NPPES

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

DR. CHRISTOPHER JAMES DEMAREE MD, MS (NPI 1225693823) is an individual surgical critical care provider in Brooklyn, New York, licensed in New York (313923) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Nyu Langone Hospitals, and is a graduate of Tulane University School Of Medicine (2019).

NPPES Registry Identity

NPI1225693823
Entity TypeIndividualMale
Primary Taxonomy2086S0102X
Provider Legal NameDR. CHRISTOPHER JAMES DEMAREECredential: MD, MS
Location Address450 CLARKSON AVENUE, DEPARTMENT OF SURGERYBrooklyn, NY 11203-2012
Mailing Address450 Clarkson Avenue, Department Of SurgeryBrooklyn, NY 11203-2012 · (718) 270-1421
Phone(718) 270-1421
Sole ProprietorNo
Medical School CMSTulane University School Of MedicineGraduated 2019
Enumeration DateMay 8, 2019
Last NPPES UpdateJuly 21, 20262 updates tracked since enumeration
NPPES CertifiedJuly 21, 2026
✔ NPI 1225693823 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in NY · 313923
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
450 CLARKSON AVENUE, Brooklyn, NY 11203
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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. Christopher James Demaree Md, Ms 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 ID9335605252
PECOS Enrollment IDI20260730006071
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 Christopher Demaree reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New York University
1,034 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.

Hospital Affiliations CMS Care Compare

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

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330214
Location550 First AvenueNew York, NY 10016 · New York 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.

DR. EMAD ABDULLAH SHABANA MD
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, SUNY DOWNSTATE MEDICAL CENTER
BROOKLYN, NY 11203
Kings County (718) 245-4799
MADELINE CLAIRE BREDA MD
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, OBSTETRICS AND GYNECOLOGY
BROOKLYN, NY 11203
Kings County (718) 270-3320
DR. JOSHUA SALAMA MD
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, DEPARTMENT OF INTERNAL MEDICINE
BROOKLYN, NY 11203
Kings County (718) 270-2353
DIMPY MODY M.D.
Pediatrics
450 CLARKSON AVENUE, SUNY DOWNSTATE MEDICAL CENTER, PEDIATRICS
BROOKLYN, NY 11203
Kings County (718) 270-2078
MR. XAVIER RAUL AGUAYO ARGUELLO M.D.
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE
BROOKLYN, NY 11203
Kings County (646) 323-4531
DANIEL GLOTSER DO
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, ANESTHESIOLOGY DEPARTMENT
BROOKLYN, NY 11203
Kings County (718) 270-3764
DILBAGH SINGH
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, DEPARTMENT OF SURGERY
BROOKLYN, NY 11203
Kings County (718) 270-3302
ZAHID IMRAN
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVENUE, SUNY DOWNSTATE ( INTERNAL MEDICINE)
BROOKLYN, NY 11203
Kings County (718) 270-1566

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 Christopher Demaree's NPI number?

The NPI number for Christopher Demaree is 1225693823. It was assigned to this individual provider in the NPPES registry on May 8, 2019.

Where is Christopher Demaree located?

Christopher Demaree practices at 450 Clarkson Avenue Department Of Surgery, Brooklyn, NY 11203. The listed phone number is (718) 270-1421.

What is Christopher Demaree's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.

Is Christopher Demaree enrolled in Medicare?

Yes. Christopher Demaree 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 Christopher Demaree's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Demaree 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 Christopher Demaree's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Christopher Demaree affiliated with any hospitals?

According to CMS data, Christopher Demaree is affiliated with Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for Christopher Demaree was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.