Mark Zellefrow, BCBA
NPI 1093145120 · Behavior Analyst · Shelby Township, MI
Mark Zellefrow, BCBA is a Behavior Analyst provider in Shelby Township, MI (NPI 1093145120).
Provider details
- NPI number
- 1093145120
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Credential
- BCBA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
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
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
- 2013-11-27
- Last updated
- 2019-02-12
Frequently asked questions
- What is Mark Zellefrow's NPI number?
- Mark Zellefrow's National Provider Identifier (NPI) is 1093145120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Zellefrow's specialty?
- Mark Zellefrow is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Mark Zellefrow located?
- Mark Zellefrow's practice location on file with NPPES is 15023 21 Mile Rd, Shelby Township, MI 48315-5024.
- What is Mark Zellefrow's phone number?
- The practice phone number listed in the NPPES registry for Mark Zellefrow is (586) 286-9644.
- Is Mark Zellefrow's NPI active?
- Yes — Mark Zellefrow's NPI (1093145120) is active in the NPPES registry as of the last update on 2019-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.