DR. ABIGAIL L. KAY MD
NPI 1669498903
Psychiatry & Neurology - Addiction Psychiatry in Phila, PA
About Dr. Abigail L. Kay Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ABIGAIL L. KAY MD (NPI 1669498903) is an individual addiction psychiatry provider in Phila, Pennsylvania, licensed in Pennsylvania (MD423075) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (2001).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. Abigail L. Kay Md 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.
Medicare Billing Reassignment
Medicare enrollment records show Abigail Kay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Philadelphia, PA 19107
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,739 clinicians in this Medicare group
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.
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
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 Abigail Kay's NPI number?
The NPI number for Abigail Kay is 1669498903. It was assigned to this individual provider in the NPPES registry on July 13, 2006.
Where is Abigail Kay located?
Abigail Kay practices at 833 Chestnut St Suite 210, Phila, PA 19107. The listed phone number is (215) 955-9453.
What is Abigail Kay's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.
Is Abigail Kay enrolled in Medicare?
Yes. Abigail Kay 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 Abigail Kay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abigail Kay reassigns Medicare benefits to Jefferson University Physicians (Philadelphia, PA). 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 Abigail Kay'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 Abigail Kay was last updated on September 11, 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.
# Dr. Abigail L. Kay, MD · NPI 1669498903
Addiction Psychiatry physician in Phila, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 13, 2006.
## Identity
- **NPI:** 1669498903 (Entity type: Individual)
- **Enumerated:** July 13, 2006
- **Primary specialty:** Psychiatry & Neurology - Addiction Psychiatry · taxonomy 2084P0802X
- **State license:** MD423075 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 833 CHESTNUT ST, SUITE 210, Phila, PA 19107-4414
- **Phone:** (215) 955-9453 · **Fax:** (215) 923-8219
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Jefferson University Physicians (NPI 1326093675, Philadelphia, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rutgers R W Johnson Medical School, class of 2001
## Record status
- **NPPES last updated:** September 11, 2025
- **Other identifiers:** Medicaid 1013381640001 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1669498903) · Data from the CMS NPPES public registry.