OLIVIA DAVIS
NPI 1801639091
Nurse Practitioner - Psychiatric/Mental Health in Chicago, IL
About Olivia Davis NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OLIVIA DAVIS (NPI 1801639091) is an individual psychiatric/mental health provider in Chicago, Illinois, licensed in Colorado (C-APN.0102498-C-NP) and active in the NPI registry since June 2024. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Olivia Davis is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Olivia Davis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 6 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60657 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60657
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Olivia Davis's NPI number?
The NPI number for Olivia Davis is 1801639091. It was assigned to this individual provider in the NPPES registry on June 14, 2024.
Where is Olivia Davis located?
Olivia Davis practices at 3000 N Halsted St Ste 803, Chicago, IL 60657. The listed phone number is (312) 376-1665.
What is Olivia Davis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Olivia Davis enrolled in Medicare?
Yes. Olivia Davis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Olivia Davis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Davis reassigns Medicare benefits to Tides Mental Health Of Il, PLLC (Chicago, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Olivia Davis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Olivia Davis was last updated on March 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Olivia Davis · NPI 1801639091
Psychiatric/Mental Health physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since June 14, 2024.
## Identity
- **NPI:** 1801639091 (Entity type: Individual)
- **Enumerated:** June 14, 2024
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** C-APN.0102498-C-NP (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 3000 N HALSTED ST STE 803, Chicago, IL 60657-6185
- **Phone:** (312) 376-1665
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Tides Mental Health Of Il, PLLC (NPI 1154014116, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** March 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1801639091) · Data from the CMS NPPES public registry.