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ANNE MARIE DEMARCO-O'KEEFE APN
NPI 1689647612
Nurse Practitioner - Pediatrics in Morristown, NJ

Active since February 09, 2006PECOS Enrolled
100 MADISON AVE, MORRISTOWN, NJ 07960(973) 971-6720(973) 401-2410 Get Directions Write a Review

NPPES record last updated: December 14, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Anne Marie Demarco-o'keefe Apn NPPES

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

ANNE MARIE DEMARCO-O'KEEFE APN (NPI 1689647612) is an individual pediatrics provider in Morristown, New Jersey, licensed in New Jersey (26NN07709300) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689647612
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameANNE MARIE DEMARCO-O'KEEFECredential: APN
Location Address100 MADISON AVEMorristown, NJ 07960-6136
Mailing Address100 Madison AveMorristown, NJ 07960-6136 · (973) 971-6720 · Fax (973) 401-2410
Phone(973) 971-6720
Fax(973) 401-2410
Sole ProprietorNo
Enumeration DateFebruary 9, 2006
Last NPPES UpdateDecember 14, 2010
✔ NPI 1689647612 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in NJ · 26NN07709300
100 MADISON AVE, Morristown, NJ 07960
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINQ09390NJ
Medicare PIN076939U77NJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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 (PECOS)

Anne Marie Demarco-o'keefe Apn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Anne Marie Demarco-o'keefe reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Practice Associates Medical Group
Same address
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

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 07960 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 20

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

MELISSA LOPES M.D
Anesthesiology
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (201) 943-5831
MORRISTOWN MEMORIAL HOSPITAL
General Acute Care Hospital
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (888) 250-9947
VINCENT MAIXNER LCSW
Social Worker (Clinical)
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
MEGAN LYNN CATHEY NP-C
Nurse Practitioner (Adult Health)
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5358
ANTHONY RIZZUTI
Nurse Anesthetist, Certified Registered
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (800) 991-9133
OMAR MOHAMMED ABDELFATTAH MBBCH
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
ALEXANDER CASCAIS MD
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000
DEVEA RANI DE MD
Student in an Organized Health Care Education/Training Program
100 MADISON AVE
MORRISTOWN, NJ 07960
Morris County (973) 971-5000

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 Anne Marie Demarco-o'keefe's NPI number?

The NPI number for Anne Marie Demarco-o'keefe is 1689647612. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Where is Anne Marie Demarco-o'keefe located?

Anne Marie Demarco-o'keefe practices at 100 Madison Ave, Morristown, NJ 07960. The listed phone number is (973) 971-6720.

What is Anne Marie Demarco-o'keefe's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Anne Marie Demarco-o'keefe enrolled in Medicare?

Yes. Anne Marie Demarco-o'keefe is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Anne Marie Demarco-o'keefe's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anne Marie Demarco-o'keefe reassigns Medicare benefits to Practice Associates Medical Group (Morristown, NJ). 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 Anne Marie Demarco-o'keefe's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anne Marie Demarco-o'keefe accept?

Health plans from Oscar Health list Anne Marie Demarco-o'keefe 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 Anne Marie Demarco-o'keefe was last updated on December 14, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.