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GRACE CATHERINE ST. CYR MD
NPI 1447887385
Pediatrics - Pediatric Infectious Diseases in Philadelphia, PA

Active since March 23, 2020PECOS Enrolled
3401 CIVIC CENTER BLVD, PHILADELPHIA, PA 19104(267) 425-3377 Get Directions Write a Review

NPPES record last updated: June 5, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 5, 2024, Jul 14, 2023, Feb 20, 2023 and 2 more (5 updates tracked since 2020).

About Grace Catherine St. Cyr Md NPPES

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

GRACE CATHERINE ST. CYR MD (NPI 1447887385) is an individual pediatric infectious diseases provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT230605) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1447887385
Entity TypeIndividualFemale
Primary Taxonomy2080P0208X
Provider Legal NameGRACE CATHERINE ST. CYRCredential: MD
Location Address3401 CIVIC CENTER BLVDPhiladelphia, PA 19104-4319
Mailing Address3401 Civic Center BlvdPhiladelphia, PA 19104-4319 · (267) 425-3377
Phone(267) 425-3377
Sole ProprietorNo
Enumeration DateMarch 23, 2020
Last NPPES UpdateJune 5, 20245 updates tracked since enumeration
NPPES CertifiedJune 5, 2024
✔ NPI 1447887385 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
License✔ Licensed in PA · MT230605
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
Also ListedPediatricsTaxonomy 208000000X · License 125076863 (IL), 036163280 (IL)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3401 CIVIC CENTER BLVD, Philadelphia, PA 19104
Open in Google Maps ↗

Secondary Practice Location 1

Location 1225 E Chicago AveChicago, IL 60611-2991 · Phone (240) 676-3230

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grace Catherine St. Cyr Md 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 Reassignment

Medicare enrollment records show Grace St. Cyr reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advocate Health And Hospitals Corp.
666 mi
Cardiovascular Disease
3118 N ASHLAND AVE
Chicago, IL 60657
  • Reassigned Medicare billing, Illinois enrollment
  • 4,870 clinicians in this Medicare group
NPI 1487951711 (773) 880-9722

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

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.

AARON DORFMAN M.D.
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - CARDIOLOGY
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-4040
MS. NICOLE MARIE KOEPKE CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - EMERGENCY MED
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1944
DR. CASSANDRA ALYS LIGH MD
Surgery (Plastic and Reconstructive Surgery)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-2208
DR. PREETI SOI
Psychiatry & Neurology (Child & Adolescent Psychiatry)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-7555
ROSALIND USHER M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
3401 CIVIC CENTER BLVD, DIVISION OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-6336
DR. MATTHEW DAVID SCHREIER MD
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
DR. TERRENCE CALDWELL JR. PHARMD
Pharmacist (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
ALYSSA STIEFEL CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000

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 Grace St. Cyr's NPI number?

The NPI number for Grace St. Cyr is 1447887385. It was assigned to this individual provider in the NPPES registry on March 23, 2020.

Where is Grace St. Cyr located?

Grace St. Cyr practices at 3401 Civic Center Blvd, Philadelphia, PA 19104. The listed phone number is (267) 425-3377.

What is Grace St. Cyr's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Grace St. Cyr enrolled in Medicare?

Yes. Grace St. Cyr is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Grace St. Cyr's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grace St. Cyr reassigns Medicare benefits to Advocate Health And Hospitals Corp. (Chicago, IL). 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 Grace St. Cyr'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 Grace St. Cyr was last updated on June 5, 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.