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MRS. CATHERINE KILEY MONAHAN NURSE PRACTITIONER
NPI 1962847400
Internal Medicine - Endocrinology, Diabetes & Metabolism in El Segundo, CA

Active since May 09, 2013PECOS Enrolled
2101 ROSECRANS AVE # 3230, EL SEGUNDO, CA 90245(323) 628-8671 Get Directions Write a Review

NPPES record last updated: October 9, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Oct 9, 2025, Oct 24, 2019 (2 updates tracked since 2019).

About Mrs. Catherine Kiley Monahan Nurse Practitioner NPPES

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

MRS. CATHERINE KILEY MONAHAN NURSE PRACTITIONER (NPI 1962847400) is an individual endocrinology, diabetes & metabolism provider in El Segundo, California, licensed in California (12247) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962847400
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameMRS. CATHERINE KILEY MONAHANCredential: NURSE PRACTITIONER
Location Address2101 ROSECRANS AVE # 3230El Segundo, CA 90245-4749
Mailing Address1950 Sawtelle Blvd Ste 150Los Angeles, CA 90025-7073 · (310) 481-3939
Phone(323) 628-8671
Sole ProprietorNo
Enumeration DateMay 9, 2013
Last NPPES UpdateOctober 9, 20252 updates tracked since enumeration
NPPES CertifiedOctober 9, 2025
✔ NPI 1962847400 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · 12247
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedNurse PractitionerTaxonomy 363L00000X · License APN.1001196-NP (CO)
2101 ROSECRANS AVE # 3230, El Segundo, CA 90245
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Catherine Kiley Monahan Nurse Practitioner 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90245 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 18

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

KENN RAFANAN
Nurse Practitioner (Family)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
AMAKA LAURETTA ANYAOHA NURSE PRACTITIONER
Nurse Practitioner (Psychiatric/Mental Health)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
DR. ISH PRASAD BHALLA MD
Psychiatry & Neurology (Psychiatry)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
YOUNG SHIN N.P.
Nurse Practitioner (Adult Health)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
RODEL LUMANOG
Nurse Practitioner (Family)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
DR. CHARLES CHRISTIAN MARTINEAU M.D.
Internal Medicine
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
MS. ROSEMARY ROYCE FNP
Nurse Practitioner (Family)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (323) 628-8671
BARBARA E BECKFORD NP
Nurse Practitioner (Adult Health)
2101 ROSECRANS AVE # 3230
EL SEGUNDO, CA 90245
Los Angeles County (657) 204-3953

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 Catherine Monahan's NPI number?

The NPI number for Catherine Monahan is 1962847400. It was assigned to this individual provider in the NPPES registry on May 9, 2013.

Where is Catherine Monahan located?

Catherine Monahan practices at 2101 Rosecrans Ave # 3230, El Segundo, CA 90245. The listed phone number is (323) 628-8671.

What is Catherine Monahan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Catherine Monahan enrolled in Medicare?

Yes. Catherine Monahan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Catherine Monahan was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.