The 99 Psychiatric Services Inc
NPI 1861280760 · Psychiatric/Mental Health Nurse Practitioner · Oakbrook Terrace, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
The 99 Psychiatric Services Inc is a Psychiatric/Mental Health Nurse Practitioner organization in Oakbrook Terrace, IL (NPI 1861280760).
Provider details
- NPI number
- 1861280760
- Entity type
- Organization
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- Chinenye Onakorame, Manager(469) 915-4211
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
Other names (DBA / former)
- Doing business as
- 99 Psych
- Doing business as
- 99 Psych
Registry dates
- Enumerated
- 2025-04-29
- Last updated
- 2026-01-08
- Certified
- 2026-01-08
Frequently asked questions
- What is The 99 Psychiatric Services Inc's NPI number?
- The 99 Psychiatric Services Inc's National Provider Identifier (NPI) is 1861280760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is The 99 Psychiatric Services Inc?
- The 99 Psychiatric Services Inc is classified in the NPPES registry as Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is The 99 Psychiatric Services Inc located?
- The 99 Psychiatric Services Inc's practice location on file with NPPES is 1 Mid America Plz, Oakbrook Terrace, IL 60181-4450.
- What is The 99 Psychiatric Services Inc's phone number?
- The practice phone number listed in the NPPES registry for The 99 Psychiatric Services Inc is (773) 800-6074.
- Does The 99 Psychiatric Services Inc accept Medicare?
- The 99 Psychiatric Services Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for The 99 Psychiatric Services Inc?
- The authorized official listed on The 99 Psychiatric Services Inc's NPPES record is Chinenye Onakorame, Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is The 99 Psychiatric Services Inc's NPI active?
- Yes — The 99 Psychiatric Services Inc's NPI (1861280760) is active in the NPPES registry as of the last update on 2026-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.