IndividualActive
Marissa O'Neill, TLLP
NPI 1033569868 · Psychologist · Midland, MI
Marissa O'Neill, TLLP is a Psychologist provider in Midland, MI (NPI 1033569868).
Provider details
- NPI number
- 1033569868
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- TLLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 6361005251 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(72/100 index)
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
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
1205 E Wackerly St
Midland, MI 48642-7035
Phone: (989) 832-9161
Fax: (989) 832-8813
Street-level locationGet directions
Mailing address
4187 Brockway Rd
Saginaw, MI 48638-4776
Registry dates
- Enumerated
- 2016-06-13
- Last updated
- 2025-05-22
- Certified
- 2025-05-22
Frequently asked questions
- What is Marissa O'Neill's NPI number?
- Marissa O'Neill's National Provider Identifier (NPI) is 1033569868, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa O'Neill's specialty?
- Marissa O'Neill is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Marissa O'Neill located?
- Marissa O'Neill's practice location on file with NPPES is 1205 E Wackerly St, Midland, MI 48642-7035.
- What is Marissa O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Marissa O'Neill is (989) 832-9161.
- Is Marissa O'Neill's NPI active?
- Yes — Marissa O'Neill's NPI (1033569868) is active in the NPPES registry as of the last update on 2025-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.