Catherine Antonczak-Grass, M.S., CCC-SLP
NPI 1093120552 · Speech-Language Pathologist · Hartland, MI
Catherine Antonczak-Grass, M.S., CCC-SLP is a Speech-Language Pathologist provider in Hartland, MI (NPI 1093120552).
Provider details
- NPI number
- 1093120552
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.S., CCC-SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 7101001658 (MI)
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
12 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
- 2014-06-24
- Last updated
- 2014-06-24
Frequently asked questions
- What is Catherine Antonczak-Grass's NPI number?
- Catherine Antonczak-Grass's National Provider Identifier (NPI) is 1093120552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Antonczak-Grass's specialty?
- Catherine Antonczak-Grass is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Catherine Antonczak-Grass located?
- Catherine Antonczak-Grass's practice location on file with NPPES is 12319 Highland Rd, Hartland, MI 48353-2946.
- What is Catherine Antonczak-Grass's phone number?
- The practice phone number listed in the NPPES registry for Catherine Antonczak-Grass is (810) 991-1211.
- Is Catherine Antonczak-Grass's NPI active?
- Yes — Catherine Antonczak-Grass's NPI (1093120552) is active in the NPPES registry as of the last update on 2014-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.