Steven Portnoy, MA
NPI 1528461746 · Clinical Psychologist · Southfield, MI
Steven Portnoy, MA is a Clinical Psychologist provider in Southfield, MI (NPI 1528461746).
Provider details
- NPI number
- 1528461746
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- MA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6301007087 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
11 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
- 2014-10-01
- Last updated
- 2014-10-01
Frequently asked questions
- What is Steven Portnoy's NPI number?
- Steven Portnoy's National Provider Identifier (NPI) is 1528461746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Portnoy's specialty?
- Steven Portnoy is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Steven Portnoy located?
- Steven Portnoy's practice location on file with NPPES is 19875 Butternut Ln, Southfield, MI 48076-1795.
- What is Steven Portnoy's phone number?
- The practice phone number listed in the NPPES registry for Steven Portnoy is (248) 568-3711.
- Is Steven Portnoy's NPI active?
- Yes — Steven Portnoy's NPI (1528461746) is active in the NPPES registry as of the last update on 2014-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.