1. Home
  2. Directory
  3. Connecticut
  4. New Haven
  5. Pediatrics
  6. NPI Profile

SOFIA GRIGORIA ATHANASOPOULOU M.D.
NPI 1518522945
Pediatrics - Pediatric Emergency Medicine in New Haven, CT

Active since May 01, 2019PECOS Enrolled
20 YORK STREET, YNHH TOMPKINS 226, NEW HAVEN, CT 06510(203) 688-9503(203) 688-5599 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 4, 2025, Jul 17, 2019, May 1, 2019 (3 updates tracked since 2019).

About Sofia Grigoria Athanasopoulou M.d. NPPES

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

SOFIA GRIGORIA ATHANASOPOULOU M.D. (NPI 1518522945) is an individual pediatric emergency medicine provider in New Haven, Connecticut, licensed in Connecticut (1.072510) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS and maintains a secondary practice location in New London.

NPPES Registry Identity

NPI1518522945
Entity TypeIndividualFemale
Primary Taxonomy2080P0204X
Provider Legal NameSOFIA GRIGORIA ATHANASOPOULOUCredential: M.D.
Location Address20 YORK STREET, YNHH TOMPKINS 226New Haven, CT 06510-3220
Mailing Address20 York Street, Ynhh Tompkins 226New Haven, CT 06510-3220 · (203) 688-9503 · Fax (203) 688-5599
Phone(203) 688-9503
Fax(203) 688-5599
Sole ProprietorNo
Enumeration DateMay 1, 2019
Last NPPES UpdateOctober 2, 20253 updates tracked since enumeration
NPPES CertifiedOctober 2, 2025
✔ NPI 1518522945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0204X
License✔ Licensed in CT · 1.072510
Definition
A pediatrician who has special qualifications to manage emergencies in infants and children.
Also ListedPediatricsTaxonomy 208000000X · License 1.072510 (CT)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
20 YORK STREET, New Haven, CT 06510
Open in Google Maps ↗

Secondary Practice Location 1

Location 1365 Montauk AveNew London, CT 06320-4700 · Phone (860) 442-0711

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sofia Grigoria Athanasopoulou M.d. 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

4

Medicare enrollment records show Sofia Grigoria Athanasopoulou reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Yale University
0.4 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432
Bridgeport Hospital
9.0 mi
General Acute Care Hospital
300 SEASIDE AVE
Milford, CT 06460
  • Reassigned Medicare billing, Connecticut enrollment
  • 219 clinicians in this Medicare group
NPI 1619553021 (203) 876-4000
Greenwich Hospital
41 mi
General Acute Care Hospital
5 PERRYRIDGE RD
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 268 clinicians in this Medicare group
NPI 1609846088 (203) 863-3000
Lawrence And Memorial Hospital, Inc.
43 mi
General Acute Care Hospital
365 MONTAUK AVENUE
New London, CT 06320
  • Reassigned Medicare billing, Connecticut enrollment
  • 65 clinicians in this Medicare group
NPI 1073530879 (860) 442-0711

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.

SARAH HILL LCSW
Social Worker (Clinical)
20 YORK STREET, YALE-NEW HAVEN PSYCHIATRIC HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9907
JENNIFER PALERMO MD
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YNHH TOMPKINS 226
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9503
TASHA LEE CUVI APRN
Nurse Practitioner (Gerontology)
20 YORK STREET, YALE-NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4748
NIKHIL SEVAL M.D.
Internal Medicine
20 YORK STREET, YNHH - IM INFECTIOUS DISEASES
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
JESSICA LAUREN DOLMAN MD
Hospitalist
20 YORK STREET, YNHH DEPT OF INTERNAL MEDICINE
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
EESHA VIJAYKUMAR NATARAJAN MBBS
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YNHH TOMPKINS 226
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9503
NIRANJANA RAMANI MBBS
Student in an Organized Health Care Education/Training Program
20 YORK STREET, YALE NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
MRS. SHARON MOALES LCSW
Social Worker (Clinical)
20 YORK STREET, YALE NEW HAVEN HOSPITAL
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-5193

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 Sofia Grigoria Athanasopoulou's NPI number?

The NPI number for Sofia Grigoria Athanasopoulou is 1518522945. It was assigned to this individual provider in the NPPES registry on May 1, 2019.

Where is Sofia Grigoria Athanasopoulou located?

Sofia Grigoria Athanasopoulou practices at 20 York Street Ynhh Tompkins 226, New Haven, CT 06510. The listed phone number is (203) 688-9503.

What is Sofia Grigoria Athanasopoulou's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is Sofia Grigoria Athanasopoulou enrolled in Medicare?

Yes. Sofia Grigoria Athanasopoulou is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sofia Grigoria Athanasopoulou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sofia Grigoria Athanasopoulou reassigns Medicare benefits to 4 organizations: Yale University (New Haven, CT), Bridgeport Hospital (Milford, CT), Greenwich Hospital (Greenwich, CT) and Lawrence And Memorial Hospital, Inc. (New London, CT). 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 Sofia Grigoria Athanasopoulou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sofia Grigoria Athanasopoulou accept?

Health plans from Anthem Blue Cross and Blue Shield list Sofia Grigoria Athanasopoulou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sofia Grigoria Athanasopoulou was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.