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MARY ANNE MACLELLAN M.A., CCC, SLP
NPI 1053440479
Speech-Language Pathologist in San Marcos, CA

Active since March 02, 2007
1595 GRAND AVE, SUITE 110, SAN MARCOS, CA 92078(760) 471-1198(760) 471-5657 Get Directions Write a Review

NPPES record last updated: July 17, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mary Anne Maclellan M.a., Ccc, Slp NPPES

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

MARY ANNE MACLELLAN M.A., CCC, SLP (NPI 1053440479) is an individual speech-language pathologist provider in San Marcos, California, licensed in California (SP4920) and active in the NPI registry since March 2007.

NPPES Registry Identity

NPI1053440479
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameMARY ANNE MACLELLANCredential: M.A., CCC, SLP
Location Address1595 GRAND AVE, SUITE 110San Marcos, CA 92078-2450
Mailing Address1595 Grand Ave, Suite 110San Marcos, CA 92078-2450 · (760) 471-1198 · Fax (760) 471-5657
Phone(760) 471-1198
Fax(760) 471-5657
Sole ProprietorYes
Enumeration DateMarch 2, 2007
Last NPPES UpdateJuly 17, 2007
✔ NPI 1053440479 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 · SP4920
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.
1595 GRAND AVE, San Marcos, CA 92078
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Other Identifiers 1

MedicaidSP0049200CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Anne Maclellan M.a., Ccc, Slp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Mary Anne Maclellan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Associated Speech Pathologists
Same address
Speech-Language Pathologist
1595 GRAND AVE, SUITE 110
San Marcos, CA 92078
  • Reassigned Medicare billing, California enrollment
NPI 1225167646 (760) 471-1198

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 11

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

AMANDA CLEVERS
Speech-Language Pathologist
1595 GRAND AVE
SAN MARCOS, CA 92078
San Diego County (760) 471-1198
MISS CARRIE E MINSKE M.P.T.
Physical Therapist
1595 GRAND AVE, STE. 106
SAN MARCOS, CA 92078
San Diego County (760) 417-2440
DR. VANESSA LEONOR NEVES MD
Pediatrics
1595 GRAND AVE, SUITE 102
SAN MARCOS, CA 92078
San Diego County (760) 798-0428
ASSOCIATED SPEECH PATHOLOGISTS
Speech-Language Pathologist
1595 GRAND AVE, SUITE 110
SAN MARCOS, CA 92078
San Diego County (760) 471-1198
417 NORTH COUNTY LLC
Substance Abuse Rehabilitation Facility (Substance Abuse Treatment, Children)
1595 GRAND AVE
SAN MARCOS, CA 92078
San Diego County (760) 485-6563
MR. SAFWAT RAFLA PA
Physician Assistant
1595 GRAND AVE
SAN MARCOS, CA 92078
San Diego County (760) 471-2273
BARBARA MALONE M.A., CCC-SLP
Speech-Language Pathologist
1595 GRAND AVE, SUITE 110
SAN MARCOS, CA 92078
San Diego County (760) 471-1198
CAROLINA AVILA BIEBEL CCC-SLP
Speech-Language Pathologist
1595 GRAND AVE
SAN MARCOS, CA 92078
San Diego County (443) 844-4706

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 Mary Anne Maclellan's NPI number?

The NPI number for Mary Anne Maclellan is 1053440479. It was assigned to this individual provider in the NPPES registry on March 2, 2007.

Where is Mary Anne Maclellan located?

Mary Anne Maclellan practices at 1595 Grand Ave Suite 110, San Marcos, CA 92078. The listed phone number is (760) 471-1198.

What is Mary Anne Maclellan's specialty?

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

Is Mary Anne Maclellan enrolled in Medicare?

Yes. Mary Anne Maclellan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Anne Maclellan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Anne Maclellan reassigns Medicare benefits to Associated Speech Pathologists (San Marcos, 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 Mary Anne Maclellan'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 Mary Anne Maclellan was last updated on July 17, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.