Casey Marks, M.S.CCC-SLP
NPI 1538438445 · Speech-Language Pathologist · Maryville, IL
Enrolled with Medicare as Practitioner - Qualified Speech Language Pathologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Casey Marks, M.S.CCC-SLP is a Speech-Language Pathologist provider in Maryville, IL (NPI 1538438445).
Provider details
- NPI number
- 1538438445
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.S.CCC-SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 146010640 (IL)
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
14 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
- 2011-12-21
- Last updated
- 2022-11-08
- Certified
- 2022-11-08
Frequently asked questions
- What is Casey Marks's NPI number?
- Casey Marks's National Provider Identifier (NPI) is 1538438445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Casey Marks's specialty?
- Casey Marks is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Casey Marks located?
- Casey Marks's practice location on file with NPPES is 2201 Copper Creek Rd, Maryville, IL 62062.
- What is Casey Marks's phone number?
- The practice phone number listed in the NPPES registry for Casey Marks is (618) 972-8475.
- Does Casey Marks accept Medicare?
- Casey Marks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Casey Marks's NPI active?
- Yes — Casey Marks's NPI (1538438445) is active in the NPPES registry as of the last update on 2022-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.