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MORRISTOWN EMERGENCY OBSERVATION SERVICES, LLC
NPI 1326980988
Emergency Medicine in Morristown, NJ

Active since April 06, 2026
100 MADISON AVE, MORRISTOWN, NJ 07960(954) 939-5000(877) 250-6889 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 28, 2026, Jul 17, 2026, May 26, 2026 and 2 more (5 updates tracked since 2026).

About Morristown Emergency Observation Services, Llc NPPES

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

MORRISTOWN EMERGENCY OBSERVATION SERVICES, LLC (NPI 1326980988) is a healthcare organization registered as an emergency medicine in Morristown, New Jersey and active in the NPI registry since April 2026. The organization lists Jessica Ferrer, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1326980988
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameMORRISTOWN EMERGENCY OBSERVATION SERVICES, LLC
Location Address100 MADISON AVEMorristown, NJ 07960-6136
Mailing AddressPo Box 781394Philadelphia, PA 19178-1394 · (954) 939-5000 · Fax (877) 250-6889
Phone(954) 939-5000
Fax(877) 250-6889
Organization SubpartNo
Authorized OfficialJessica FerrerAuthorized Official · (954) 939-5950
Enumeration DateApril 6, 2026
Last NPPES UpdateJuly 28, 20265 updates tracked since enumeration
NPPES CertifiedJuly 28, 2026
✔ NPI 1326980988 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
100 MADISON AVE, Morristown, NJ 07960
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Morristown Emergency Observation Services, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Morristown Emergency Observation Services, LLC, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (6)

Denise Bender
Nurse Practitioner
NPI 1194483040
100 MADISON AVE
Morristown, NJ 07960
(973) 971-5000
✔ PECOS✔ Accepts MedicareSame address
Oliver Hung, M.D.
Emergency Medicine
NPI 1356390173
100 MADISON AVE
Morristown, NJ 07960
(800) 290-5309
✔ PECOS✔ Accepts MedicareSame address
Frederick Fiesseler, D.O.
Emergency Medicine
NPI 1033177415
100 MADISON AVE
Morristown, NJ 07960
(800) 290-5309
✔ PECOS✔ Accepts MedicareSame address
Kevin Mcsherry, MD
Emergency Medicine
NPI 1336145986
100 MADISON AVE. MORRISTOWN MEMORIAL HOSPITAL - DEPT OF EMERG MEDICINE
Morristown, NJ 07960
(973) 971-6000
✔ PECOSSame address
Jeffrey Rabrich, D.O.
Emergency Medicine
NPI 1679765671
1000 10TH AVE RM GE-01 ST. LUKE'S - ROOSEVELT HOSPITAL CENTER
New York, NY 10019
(212) 523-8158
✔ PECOS✔ Accepts Medicare25 mi
David Salo, MD
Emergency Medicine
NPI 1497803258
300 2ND AVE MONMOUTH MEDICAL CENTER
Long Branch, NJ 07740
(732) 923-8882
✔ PECOS✔ Accepts Medicare42 mi

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

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 Morristown Emergency Observation Services, LLC's NPI number?

The NPI number for Morristown Emergency Observation Services, LLC is 1326980988. It was assigned to this organization in the NPPES registry on April 6, 2026.

Where is Morristown Emergency Observation Services, LLC located?

Morristown Emergency Observation Services, LLC is located at 100 Madison Ave, Morristown, NJ 07960. The listed phone number is (954) 939-5000.

What is Morristown Emergency Observation Services, LLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Morristown Emergency Observation Services, LLC enrolled in Medicare?

Yes. Morristown Emergency Observation Services, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Morristown Emergency Observation Services, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Morristown Emergency Observation Services, LLC. A 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 the clinician's services. The largest specialties are Emergency Medicine (5) and Nurse Practitioner (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Morristown Emergency Observation Services, LLC was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.