Mary Anne Maclellan, M.A., CCC, SLP
NPI 1053440479 · Speech-Language Pathologist · San Marcos, CA
Enrolled with Medicare as Practitioner - Qualified Speech Language Pathologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Anne Maclellan, M.A., CCC, SLP is a Speech-Language Pathologist provider in San Marcos, CA (NPI 1053440479).
Provider details
- NPI number
- 1053440479
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.A., CCC, SLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- SP4920 (CA)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-02
- Last updated
- 2007-07-17
Frequently asked questions
- What is Mary Anne Maclellan's NPI number?
- Mary Anne Maclellan's National Provider Identifier (NPI) is 1053440479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Anne Maclellan's specialty?
- Mary Anne Maclellan is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Mary Anne Maclellan located?
- Mary Anne Maclellan's practice location on file with NPPES is 1595 Grand Ave, San Marcos, CA 92078-2450.
- What is Mary Anne Maclellan's phone number?
- The practice phone number listed in the NPPES registry for Mary Anne Maclellan is (760) 471-1198.
- Does Mary Anne Maclellan accept Medicare?
- Mary Anne Maclellan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Anne Maclellan's NPI active?
- Yes — Mary Anne Maclellan's NPI (1053440479) is active in the NPPES registry as of the last update on 2007-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.