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HALLIE N NELSON MD
NPI 1417513722
Obstetrics & Gynecology in New Haven, CT

Active since May 13, 2019PECOS Enrolled
789 HOWARD AVE, NEW HAVEN, CT 06519(877) 925-3637 Get Directions Write a Review

NPPES record last updated: September 8, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 8, 2025, Aug 29, 2023, May 13, 2019 (3 updates tracked since 2019).

About Hallie N Nelson Md NPPES

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

HALLIE N NELSON MD (NPI 1417513722) is an individual obstetrics & gynecology provider in New Haven, Connecticut, licensed in Connecticut (82469) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (2019).

NPPES Registry Identity

NPI1417513722
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameHALLIE N NELSONCredential: MD
Location Address789 HOWARD AVENew Haven, CT 06519-1304
Mailing Address789 Howard AveNew Haven, CT 06519-1304
Phone(877) 925-3637
Sole ProprietorNo
Medical School CMSPennsylvania State University College Of MedicineGraduated 2019
Enumeration DateMay 13, 2019
Last NPPES UpdateSeptember 8, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2025
✔ NPI 1417513722 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CT · 82469
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
789 HOWARD AVE, New Haven, CT 06519
Open in Google Maps ↗

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)

Hallie N Nelson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9638406366
PECOS Enrollment IDI20251028000407
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

2

Medicare enrollment records show Hallie Nelson reassigns Medicare billing to 2 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
Montefiore Medical Center
57 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021

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 06519 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
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 20

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

CYRUS R KAPADIA MD
Internal Medicine (Gastroenterology)
789 HOWARD AVE, DANA BUILDING - 3RD FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4138
PEDRO JOSE GONZALEZ JIMENEZ
Pediatrics (Pediatric Emergency Medicine)
789 HOWARD AVE, YNHH PEDIATRICS
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-5555
DR. AMIT N VORA MD
Internal Medicine (Interventional Cardiology)
789 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-7960
DEVIKA KIR MD
Internal Medicine (Interventional Cardiology)
789 HOWARD AVE, YNHH,
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-5555
LOUISE MARIE DEMBRY MD
Internal Medicine (Infectious Disease)
789 HOWARD AVE, DANA BUILDING - 3RD FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4629
PRIYANKA DEB M.D.
Radiology (Diagnostic Radiology)
789 HOWARD AVE, TOMPKINS EAST BUILDING ROOM 2-230
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2385
MRS. KATHLEEN O'CONNOR FRAME ANP-C, WHNP-BC, APRN
Nurse Practitioner (Adult Health)
789 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-5555
VIDHI PATEL
Pharmacist
789 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (888) 461-0106

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 Hallie Nelson's NPI number?

The NPI number for Hallie Nelson is 1417513722. It was assigned to this individual provider in the NPPES registry on May 13, 2019.

Where is Hallie Nelson located?

Hallie Nelson practices at 789 Howard Ave, New Haven, CT 06519. The listed phone number is (877) 925-3637.

What is Hallie Nelson's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Hallie Nelson enrolled in Medicare?

Yes. Hallie Nelson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Hallie Nelson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hallie Nelson reassigns Medicare benefits to 2 organizations: Yale University (New Haven, CT) and Montefiore Medical Center (Bronx, NY). 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 Hallie Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Hallie Nelson accept?

Health plans from Anthem Blue Cross and Blue Shield list Hallie Nelson 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 Hallie Nelson was last updated on September 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.