1. Home
  2. Directory
  3. New Jersey
  4. Cedar Knolls
  5. Nurse Practitioner
  6. NPI Profile

KAREN VANESSA MACEY-STEWART MSN, APN-C
NPI 1831502806
Nurse Practitioner in Cedar Knolls, NJ

Active since June 08, 2014PECOS EnrolledAccepts Medicare Assignment
6 SADDLE RD, CEDAR KNOLLS, NJ 07927(973) 796-3600(973) 267-3144 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 12, 2025, Sep 28, 2021, Dec 7, 2015 (3 updates tracked since 2015).

About Karen Vanessa Macey-stewart Msn, Apn-c NPPES

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

KAREN VANESSA MACEY-STEWART MSN, APN-C (NPI 1831502806) is an individual nurse practitioner in Cedar Knolls, New Jersey, licensed in New Jersey (26NJ00493100) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS, is affiliated with Overlook Medical Center, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1831502806
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameKAREN VANESSA MACEY-STEWARTCredential: MSN, APN-C
Location Address6 SADDLE RDCedar Knolls, NJ 07927-1901
Mailing AddressPo Box 416457Boston, MA 02241-6457 · (844) 362-1735 · Fax (973) 290-7495
Phone(973) 796-3600
Fax(973) 267-3144
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateJune 8, 2014
Last NPPES UpdateNovember 12, 20253 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1831502806 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in NJ · 26NJ00493100
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 ListedRegistered Nurse · Pain ManagementTaxonomy 163WP0000X · License 26NJ00493100 (NJ)
Also ListedHospice Care, Community BasedTaxonomy 251G00000X · License 26NR00493100 (NJ)
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 204825 (LA)
Also ListedNurse Anesthetist, Certified RegisteredTaxonomy 367500000X · License 26NR00493100 (NJ)
6 SADDLE RD, Cedar Knolls, NJ 07927
Open in Google Maps ↗

Other Identifiers 1

OtherCAQH12746371

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

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

Karen Vanessa Macey-stewart Msn, Apn-c 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.

PECOS PAC ID9133445273
PECOS Enrollment IDI20150306001775
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 Karen Macey-stewart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Practice Associates Medical Group
1.9 mi
Internal Medicine
100 MADISON AVENUE, INTEROFFICE #68
Morristown, NJ 07960
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,699 clinicians in this Medicare group
NPI 1427016385 (844) 264-2250
Signify Health, LLC
1,349 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Louisiana enrollment
  • 439 clinicians in this Medicare group
NPI 1689158487 (469) 466-7007

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Overlook Medical Center

Acute Care Hospitals · Summit, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310051
Location99 Beauvoir AvenueSummit, NJ 07901 · Union County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07927 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
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
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 19

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

ADA ISABEL RODRIGUEZ MSOT
Occupational Therapist
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 971-4580
DR. GREGORY MULFORD M.D.
Physical Medicine & Rehabilitation
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 796-3600
DR. AMIE GRESACK AU.D.
Audiologist
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 971-4510
EDYTA WNEK
Physical Therapy Assistant
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 971-4551
SHAYE GILMARTIN CCC-SLP
Speech-Language Pathologist
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 971-4451
ILENE KIM ROSENTHAL-SCHULMAN PT, DPT
Physical Therapist
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 971-4451
DR. SANDIA PADAVAN M.D.
Physical Medicine & Rehabilitation
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 796-3600
DANYELLE ALVINO BLOUIN PA
Physician Assistant (Medical)
6 SADDLE RD
CEDAR KNOLLS, NJ 07927
Morris County (973) 796-3600

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 Karen Macey-stewart's NPI number?

The NPI number for Karen Macey-stewart is 1831502806. It was assigned to this individual provider in the NPPES registry on June 8, 2014.

Where is Karen Macey-stewart located?

Karen Macey-stewart practices at 6 Saddle Rd, Cedar Knolls, NJ 07927. The listed phone number is (973) 796-3600.

What is Karen Macey-stewart's specialty?

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

Is Karen Macey-stewart enrolled in Medicare?

Yes. Karen Macey-stewart 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 organizations bill Medicare for Karen Macey-stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Macey-stewart reassigns Medicare benefits to 2 organizations: Practice Associates Medical Group (Morristown, NJ) and Signify Health, LLC (Dallas, TX). 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 Karen Macey-stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Macey-stewart accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Karen Macey-stewart 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.

Is Karen Macey-stewart affiliated with any hospitals?

According to CMS data, Karen Macey-stewart is affiliated with Overlook Medical Center.

When was this NPI record last updated?

The NPPES record for Karen Macey-stewart was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.