Cassandra Mazyck
NPI 1821400912 · Addiction (Substance Use Disorder) Counselor · New York, NY
Cassandra Mazyck is a Addiction (Substance Use Disorder) Counselor provider in New York, NY (NPI 1821400912).
Provider details
- NPI number
- 1821400912
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 12398 (NY)
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
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
- 2014-05-23
- Last updated
- 2014-05-23
Frequently asked questions
- What is Cassandra Mazyck's NPI number?
- Cassandra Mazyck's National Provider Identifier (NPI) is 1821400912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassandra Mazyck's specialty?
- Cassandra Mazyck is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Cassandra Mazyck located?
- Cassandra Mazyck's practice location on file with NPPES is 55 W 125th St, New York, NY 10027-4516.
- What is Cassandra Mazyck's phone number?
- The practice phone number listed in the NPPES registry for Cassandra Mazyck is (212) 864-4128.
- Is Cassandra Mazyck's NPI active?
- Yes — Cassandra Mazyck's NPI (1821400912) is active in the NPPES registry as of the last update on 2014-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.