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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ELIZABETH B KAY GNP-BC
NPI 1598122863
Nurse Practitioner in Worcester, MA

Active since January 18, 2016PECOS Enrolled
55 LAKE AVE N, WORCESTER, MA 01655(508) 334-4830(774) 441-6710 Get Directions Write a Review

NPPES record last updated: October 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 16, 2026, May 12, 2022, Jan 18, 2016 (3 updates tracked since 2016).

About Elizabeth B Kay Gnp-bc NPPES

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

ELIZABETH B KAY GNP-BC (NPI 1598122863) is an individual nurse practitioner in Worcester, Massachusetts, licensed in Massachusetts (RN251761) and active in the NPI registry since January 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Worcester, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1598122863
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameELIZABETH B KAYCredential: GNP-BC
Location Address55 LAKE AVE NWorcester, MA 01655-0002
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(508) 334-4830
Fax(774) 441-6710
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateJanuary 18, 2016
Last NPPES UpdateOctober 16, 20263 updates tracked since enumeration
NPPES CertifiedOctober 16, 2026
✔ NPI 1598122863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MA · RN251761
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X · License RN251761 (MA)
55 LAKE AVE N, Worcester, MA 01655
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Secondary Practice Location 1

Location 1119 Belmont StWorcester, MA 01605-2903 · Phone (508) 334-4830 · Fax (774) 441-6710

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)

Elizabeth B Kay Gnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8224333190
PECOS Enrollment IDI20190506002836
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 Elizabeth Kay reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Notre Dame Health Care Center, Inc.
1.3 mi
Hospice and Palliative Medicine
555 PLANTATION ST
Worcester, MA 01605
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2 clinicians in this Medicare group
NPI 1689703068 (508) 852-5505
Care Dimensions, Inc.
46 mi
Case Management
75 SYLVAN ST, SUITE B-102
Danvers, MA 01923
  • Reassigned Medicare billing, Massachusetts enrollment
  • 64 clinicians in this Medicare group
NPI 1316084890 (978) 774-7566

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
90 services30 patients
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350
An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.
31 services18 patients
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348
An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.
18 services11 patients
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345
A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01655 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
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.

HILLARY R. IRONS MD
Emergency Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 421-1400
MS. SHERINE MARY HASSEY-HALLIGAN NP
Nurse Practitioner
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-8585
MS. EILEEN A. DUHAMEL NP
Nurse Practitioner
55 LAKE AVE N, DEPARTMENT OF RADIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-2710
EWA HRYNISZYN CRNA
Nurse Anesthetist, Certified Registered
55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-3271
HELEN COPSEY PA-C
Physician Assistant
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-8585
DR. ADEPEJU GBADEBO CHAMPION M.D.
Internal Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-2731
SOWMYA KORAPATI
Internal Medicine (Hematology & Oncology)
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-3550
LAYLA FAKHRZADEH M.D.
Anesthesiology
55 LAKE AVE N, ANESTHESIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-3271

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 Elizabeth Kay's NPI number?

The NPI number for Elizabeth Kay is 1598122863. It was assigned to this individual provider in the NPPES registry on January 18, 2016.

Where is Elizabeth Kay located?

Elizabeth Kay practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 334-4830.

What is Elizabeth Kay's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Elizabeth Kay enrolled in Medicare?

Yes. Elizabeth Kay is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Elizabeth Kay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Kay reassigns Medicare benefits to 2 organizations: Notre Dame Health Care Center, Inc. (Worcester, MA) and Care Dimensions, Inc. (Danvers, MA). 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 Elizabeth Kay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elizabeth Kay accept?

Health plans from Anthem Blue Cross and Blue Shield list Elizabeth Kay 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 Elizabeth Kay was last updated on October 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.