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Dr. Diana M Ohanian , PhD

Psychologist β€’ Chicago, IL

Active NPI 1992578439 Individual Practitioner Female Practitioner
Practice location in NPPES

5841 S Maryland Ave
Chicago, IL 606371443

Call 8888240200 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

5841 S Maryland Ave

Chicago, IL 606371443

Telephone 8888240200
Organization at the Same NPPES Address or Phone
University Of Chicago Facility NPI 1821048786

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Detroit, MI. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

NPI first issued

2023

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Ohanian has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Ohanian as eligible to order or refer Medicare Part B clinical laboratory and imaging services and durable medical equipment (DME) for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

342 active clinicians are listed under Psychologist with a practice address in Chicago, IL (1,016 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Chicago

8.5% of these 342 clinicians have the CMS telehealth indicator.

12.3% of these 342 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-07-15
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

License # reported to NPPES IL 071021062

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Clinical Neuropsychologist

NUCC Taxonomy Code: 103G00000X

A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

Psychologist

NUCC Taxonomy Code: 103T00000X

License # reported to NPPES MI 6301019503

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Psychologist - Clinical Child & Adolescent

NUCC Taxonomy Code: 103TC2200X

A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

Psychologist - Rehabilitation

NUCC Taxonomy Code: 103TR0400X

A psychologist who specializes in the study and application of psychological principles on behalf of persons who have disability due to injury or illness. Rehabilitation psychologists, often within teams, assess and treat cognitive, emotional, and functional difficulties, and help people to overcome barriers to participation in life activities. Rehabilitation psychologists are involved in practice, research, and advocacy, with the broad goal of fostering independence and opportunity for people with disabilities.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PSYCHOLOGIST BILLING INDEPENDENTLY

Medicare Enrollment ID

I20241008000969

Enrollment State Jurisdiction

MI

PECOS Control ID

5092253989

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Not Eligible
Power Mobility Devices (PMD) Not Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Secondary Practice Locations

4201 Saint Antoine St Ste 4b

Detroit, MI 482012153

Phone: 3137454878

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

36 listed
Calvin Adatsi

Nurse Practitioner - Family

NPI 1033767082
Ayman Al-Hendy

Obstetrics & Gynecology

NPI 1023184637
Stephen Bennett

Family Medicine

NPI 1013978766
Paul Chang

Radiology - Diagnostic Radiology

NPI 1023080983
Michael Davidson

Internal Medicine - Cardiovascular Disease

NPI 1023033321
Alexandra Dumitrescu

Internal Medicine

NPI 1003078049

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

12 Historical Events
πŸ“
Updated Practice Location July 15, 2025

Registered at 5841 S MARYLAND AVE, CHICAGO, IL 606371443 (Tel: 8888240200)

πŸ“
Updated Business Mailing Address July 15, 2025

Registered at 150 HARVESTER DR STE 300, BURR RIDGE, IL 605275965

🏒
Secondary Practice Location Registered July 15, 2025

Additional practice office at 4201 Saint Antoine St Ste 4B, Detroit, MI 482012153

πŸ“
Updated Practice Location July 10, 2024

Registered at 4201 SAINT ANTOINE ST STE 4B, DETROIT, MI 482012153 (Tel: 3137454878)

πŸ“
Updated Business Mailing Address July 10, 2024

Registered at 4201 SAINT ANTOINE ST STE 4B, DETROIT, MI 482012153 (Tel: 3137454878)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 10, 2024

Clinical Neuropsychologist

βœ…
NPI Profile Active November 06, 2023

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) November 06, 2023

Registered at 325 E EISENHOWER PKWY SPC 5744, ANN ARBOR, MI 481083364 (Tel: 2487097610)

πŸ“
Business Mailing Address (Initial Record) November 06, 2023

Registered at 325 E EISENHOWER PKWY SPC 5744, ANN ARBOR, MI 481083364 (Tel: 2487097610)

πŸ‘€
Provider Name / Credentials (Initial Record) November 06, 2023

Recorded as DIANA OHANIAN, PH.D.

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 06, 2023

Psychologist

🟒
Initial NPI Registration & Enumeration November 06, 2023

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1992578439
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 06, 2023
Last Update: July 15, 2025
Sole Proprietor: Yes

Other Psychologists in Chicago

All Psychologists in Chicago

Mailing Address

150 Harvester Dr Ste 300

Burr Ridge, IL 605275965

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.