Sylvester Marks
NPI 1972314698 · Addiction (Substance Use Disorder) Counselor · Cleveland, OH
Sylvester Marks is a Addiction (Substance Use Disorder) Counselor provider in Cleveland, OH (NPI 1972314698).
Provider details
- NPI number
- 1972314698
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
- 2025-01-14
- Last updated
- 2025-02-11
- Certified
- 2025-02-11
Frequently asked questions
- What is Sylvester Marks's NPI number?
- Sylvester Marks's National Provider Identifier (NPI) is 1972314698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvester Marks's specialty?
- Sylvester Marks is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Sylvester Marks located?
- Sylvester Marks's practice location on file with NPPES is 8411 Broadway Ave, Cleveland, OH 44105-3932.
- What is Sylvester Marks's phone number?
- The practice phone number listed in the NPPES registry for Sylvester Marks is (216) 441-0200.
- Is Sylvester Marks's NPI active?
- Yes — Sylvester Marks's NPI (1972314698) is active in the NPPES registry as of the last update on 2025-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.