ALEXANDRA W HALLACY
NPI 1689263873
Physician Assistant - Surgical in New York, NY
About Alexandra W Hallacy NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDRA W HALLACY (NPI 1689263873) is an individual surgical provider in New York, New York, licensed in New York (026049) and active in the NPI registry since January 2021. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Alexandra W Hallacy is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
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.
NEW YORK, NY 10029
NEW YORK, NY 10029
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 Alexandra Hallacy's NPI number?
The NPI number for Alexandra Hallacy is 1689263873. It was assigned to this individual provider in the NPPES registry on January 13, 2021. The provider is also known as Alexandra Williams.
Where is Alexandra Hallacy located?
Alexandra Hallacy practices at 1176 5th Ave, New York, NY 10029. The listed phone number is (212) 241-3300.
What is Alexandra Hallacy's specialty?
The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.
Is Alexandra Hallacy enrolled in Medicare?
Yes. Alexandra Hallacy is registered in the Medicare PECOS enrollment system.
When was this NPI record last updated?
The NPPES record for Alexandra Hallacy was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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.
# Alexandra W Hallacy · NPI 1689263873
Surgical physician in New York, New York. Individual provider, active in the CMS NPPES registry since January 13, 2021.
## Identity
- **NPI:** 1689263873 (Entity type: Individual)
- **Enumerated:** January 13, 2021
- **Primary specialty:** Physician Assistant - Surgical · taxonomy 363AS0400X
- **State license:** 026049 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1176 5TH AVE, New York, NY 10029-6503
- **Phone:** (212) 241-3300
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
## Record status
- **NPPES last updated:** July 31, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1689263873) · Data from the CMS NPPES public registry.