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DR. CATHERINE LOUISE MCILHANY MD
NPI 1912959354
Pediatrics in Aurora, CO

Active since May 16, 2006PECOS Enrolled
13650 E MISSISSIPPI AVE, AURORA, CO 80012(303) 695-4993 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Catherine Louise Mcilhany Md NPPES

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

DR. CATHERINE LOUISE MCILHANY MD (NPI 1912959354) is an individual pediatrics provider in Aurora, Colorado, licensed in Colorado (39731) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1912959354
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. CATHERINE LOUISE MCILHANYCredential: MD
Location Address13650 E MISSISSIPPI AVEAurora, CO 80012-3561
Mailing Address8300 Fairmount Dr, Unit K-102Denver, CO 80247-6527 · (303) 863-8221
Phone(303) 695-4993
Sole ProprietorNo
Enumeration DateMay 16, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1912959354 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CO · 39731
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
13650 E MISSISSIPPI AVE, Aurora, CO 80012
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Other Identifiers 1

Medicaid07270542CO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Catherine Louise Mcilhany Md 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 Catherine Mcilhany reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Denver Health And Hospital Authority
8.7 mi
General Practice
777 BANNOCK ST
Denver, CO 80204
  • Reassigned Medicare billing, Colorado enrollment
  • 2,259 clinicians in this Medicare group
NPI 1477569838 (303) 436-6000

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 80012 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
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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.

MRS. ELLEN G BUCHANNAN NP
Registered Nurse
13650 E MISSISSIPPI AVE, 120
AURORA, CO 80012
Arapahoe County (303) 695-8684
LESLIE SHENKEL MD
Family Medicine
13650 E MISSISSIPPI AVE, SUITE 100-B
AURORA, CO 80012
Arapahoe County (877) 889-1522
DR. JO ANGELA JOHNSTON PSY.D.
Psychologist (Clinical)
13650 E MISSISSIPPI AVE
AURORA, CO 80012
Arapahoe County (303) 695-1338
DR. HOLLY LYNN AMSBURY M.D.
Family Medicine
13650 E MISSISSIPPI AVE, STE. 100-B
AURORA, CO 80012
Arapahoe County (303) 695-1338
HOSPICE OF METRO DENVER, INC
Program of All-Inclusive Care for the Elderly (PACE) Provider Organization
13650 E MISSISSIPPI AVE
DENVER, CO 80012
Arapahoe County (303) 381-1234
DR. STACY L HUFFMAN MD
Family Medicine
13650 E MISSISSIPPI AVE, 100-B
AURORA, CO 80012
Arapahoe County (303) 695-1338
MALLORY ELAINE KNOTT FNP-C
Nurse Practitioner (Family)
13650 E MISSISSIPPI AVE
AURORA, CO 80012
Arapahoe County (303) 695-1338
KELLY ONEILL PA-C
Physician Assistant
13650 E MISSISSIPPI AVE
AURORA, CO 80012
Arapahoe County (303) 695-8684

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 Mcilhany's NPI number?

The NPI number for Catherine Mcilhany is 1912959354. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Where is Catherine Mcilhany located?

Catherine Mcilhany practices at 13650 E Mississippi Ave, Aurora, CO 80012. The listed phone number is (303) 695-4993.

What is Catherine Mcilhany's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Catherine Mcilhany enrolled in Medicare?

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

Which organization bills Medicare for Catherine Mcilhany's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Mcilhany reassigns Medicare benefits to Denver Health And Hospital Authority (Denver, CO). 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 Catherine Mcilhany's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Catherine Mcilhany was last updated on July 13, 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.