IndividualActive
Mark Zellner, MS
NPI 1770430811 · Mental Health Counselor · Adrian, MI
Mark Zellner, MS is a Mental Health Counselor provider in Adrian, MI (NPI 1770430811).
Provider details
- NPI number
- 1770430811
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6451024862 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
142 E Maumee St
Adrian, MI 49221-2735
Phone: (517) 442-2991
Street-level locationGet directions
Mailing address
143 Union St
Hillsdale, MI 49242-1331
Registry dates
- Enumerated
- 2026-03-16
- Last updated
- 2026-03-16
- Certified
- 2026-03-16
Frequently asked questions
- What is Mark Zellner's NPI number?
- Mark Zellner's National Provider Identifier (NPI) is 1770430811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Zellner's specialty?
- Mark Zellner is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Zellner located?
- Mark Zellner's practice location on file with NPPES is 142 E Maumee St, Adrian, MI 49221-2735.
- What is Mark Zellner's phone number?
- The practice phone number listed in the NPPES registry for Mark Zellner is (517) 442-2991.
- Is Mark Zellner's NPI active?
- Yes — Mark Zellner's NPI (1770430811) is active in the NPPES registry as of the last update on 2026-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.