DIANA M OHANIAN PH.D.
NPI 1992578439
Psychologist in Chicago, IL
About Diana M Ohanian Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA M OHANIAN PH.D. (NPI 1992578439) is an individual psychologist in Chicago, Illinois, licensed in Illinois (071021062) and active in the NPI registry since November 2023. She is enrolled in Medicare PECOS and maintains a secondary practice location in Detroit.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Diana M Ohanian Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Diana Ohanian reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 635 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 2,237 clinicians in this Medicare group
Southfield, MI 48034
- Reassigned Medicare billing, Michigan enrollment
- 407 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.
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 60637
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 Diana Ohanian's NPI number?
The NPI number for Diana Ohanian is 1992578439. It was assigned to this individual provider in the NPPES registry on November 6, 2023.
Where is Diana Ohanian located?
Diana Ohanian practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (888) 824-0200.
What is Diana Ohanian's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Diana Ohanian enrolled in Medicare?
Yes. Diana Ohanian is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Diana Ohanian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Ohanian reassigns Medicare benefits to 3 organizations: The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL) and Vhs Physicians Of Michigan (Southfield, MI). Each 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 Diana Ohanian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Ohanian accept?
Health plans from Oscar Health list Diana Ohanian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Diana Ohanian was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.