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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.

KATHERINE KELLENBERGER MD
NPI 1861195935
Hospitalist in Morristown, NJ

Active since March 27, 2023
100 MADISON AVE, MORRISTOWN, NJ 07960(973) 971-4287(973) 290-8325 Get Directions Write a Review

NPPES record last updated: September 25, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 25, 2026, Mar 27, 2023 (2 updates tracked since 2023).

About Katherine Kellenberger Md NPPES

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

KATHERINE KELLENBERGER MD (NPI 1861195935) is an individual hospitalist provider in Morristown, New Jersey, licensed in New Jersey (25MA12982000) and active in the NPI registry since March 2023.

NPPES Registry Identity

NPI1861195935
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameKATHERINE KELLENBERGERCredential: MD
Location Address100 MADISON AVEMorristown, NJ 07960-6136
Mailing AddressPo Box 416457Boston, MA 02241-6457 · (844) 362-1735 · Fax (973) 290-7495
Phone(973) 971-4287
Fax(973) 290-8325
Sole ProprietorNo
Enumeration DateMarch 27, 2023
Last NPPES UpdateSeptember 25, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 25, 2026
✔ NPI 1861195935 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in NJ · 25MA12982000
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License 25MA12982000 (NJ)
100 MADISON AVE, Morristown, NJ 07960
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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 Katherine Kellenberger's NPI number?

The NPI number for Katherine Kellenberger is 1861195935. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Katherine Kellenberger located?

Katherine Kellenberger practices at 100 Madison Ave, Morristown, NJ 07960. The listed phone number is (973) 971-4287.

What is Katherine Kellenberger's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

When was this NPI record last updated?

The NPPES record for Katherine Kellenberger was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.