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KATHARINE QUILLIN M.S. CCC-SLP
NPI 1891248662
Speech-Language Pathologist in Orange, CA

Active since July 28, 2016
1301 W PROVIDENCE AVE, ORANGE, CA 92868(714) 639-4990 Get Directions Write a Review

NPPES record last updated: January 20, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Katharine Quillin M.s. Ccc-slp NPPES

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

KATHARINE QUILLIN M.S. CCC-SLP (NPI 1891248662) is an individual speech-language pathologist provider in Orange, California, licensed in California (24287) and active in the NPI registry since July 2016.

NPPES Registry Identity

NPI1891248662
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameKATHARINE QUILLINCredential: M.S. CCC-SLP
Location Address1301 W PROVIDENCE AVEOrange, CA 92868-3808
Mailing Address1301 W Providence AveOrange, CA 92868-3808 · (714) 369-4990
Phone(714) 639-4990
Sole ProprietorNo
Enumeration DateJuly 28, 2016
Last NPPES UpdateJanuary 20, 2023
NPPES CertifiedJanuary 20, 2023
✔ NPI 1891248662 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
License✔ Licensed in CA · 24287
Definition
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
1301 W PROVIDENCE AVE, Orange, CA 92868
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katharine Quillin M.s. Ccc-slp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Katharine Quillin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Children's Hospital Of Orange County
0.1 mi
Pediatrics
1201 W LA VETA AVE
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Childrens Hospital Of Orange County
  • 190 clinicians in this Medicare group
NPI 1275975104 (714) 509-8649

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

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. AYREN ELLEN DREYER SLP
Speech-Language Pathologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
JANELLE BRIANA CUBAS B.A.
Speech-Language Pathologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
PATRICIA MARIE ROSSI T-SLP
Speech-Language Pathologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 923-1527
YOMNA ELSIDDIG
Speech-Language Pathologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
TRACY MORILLO CCC-SLP
Speech-Language Pathologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
DARCY HEALEY OT
Occupational Therapist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
NISREEN ALKHAYER
Audiologist
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (714) 639-4990
MCCALL LOPICCOLO SLPA
Specialist/Technologist (Speech-Language Assistant)
1301 W PROVIDENCE AVE
ORANGE, CA 92868
Orange County (855) 901-7742

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 Katharine Quillin's NPI number?

The NPI number for Katharine Quillin is 1891248662. It was assigned to this individual provider in the NPPES registry on July 28, 2016.

Where is Katharine Quillin located?

Katharine Quillin practices at 1301 W Providence Ave, Orange, CA 92868. The listed phone number is (714) 639-4990.

What is Katharine Quillin's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Is Katharine Quillin enrolled in Medicare?

Yes. Katharine Quillin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Katharine Quillin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katharine Quillin reassigns Medicare benefits to Children's Hospital Of Orange County (Orange, CA). 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 Katharine Quillin'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 Katharine Quillin was last updated on January 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.