Marc Oster, PSY.D.
NPI 1114069093 · Psychologist · Deerfield, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Oster, PSY.D. is a Psychologist provider in Deerfield, IL (NPI 1114069093).
Provider details
- NPI number
- 1114069093
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Psychologist103TC0700X
Behavioral Health & Social Service Providers
- Health Service Psychologist103TH0100X
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
19 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
- 2007-02-13
- Last updated
- 2025-09-11
Frequently asked questions
- What is Marc Oster's NPI number?
- Marc Oster's National Provider Identifier (NPI) is 1114069093, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Oster's specialty?
- Marc Oster is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Marc Oster located?
- Marc Oster's practice location on file with NPPES is 707 Lake Cook Rd Ste 120, Deerfield, IL 60015-4909.
- What is Marc Oster's phone number?
- The practice phone number listed in the NPPES registry for Marc Oster is (847) 604-1593.
- Does Marc Oster accept Medicare?
- Marc Oster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Oster's NPI active?
- Yes — Marc Oster's NPI (1114069093) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.