Crystal Williams
NPI 1699158436 · Mental Health Counselor · Columbia, SC
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Williams is a Mental Health Counselor provider in Columbia, SC (NPI 1699158436).
Provider details
- NPI number
- 1699158436
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- 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
10 yrs 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
- 2015-06-29
- Last updated
- 2015-06-29
Frequently asked questions
- What is Crystal Williams's NPI number?
- Crystal Williams's National Provider Identifier (NPI) is 1699158436, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Williams's specialty?
- Crystal Williams is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Crystal Williams located?
- Crystal Williams's practice location on file with NPPES is 261 Business Park Blvd, Columbia, SC 29203-8904.
- What is Crystal Williams's phone number?
- The practice phone number listed in the NPPES registry for Crystal Williams is (803) 200-4404.
- Does Crystal Williams accept Medicare?
- Crystal Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Williams's NPI active?
- Yes — Crystal Williams's NPI (1699158436) is active in the NPPES registry as of the last update on 2015-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.