DR. ILAYNA MEHRTENS PHD
NPI 1548919632
Psychologist in Chicago, IL

Active since March 23, 2022PECOS EnrolledAccepts Medicare Assignment
97.71/100
CMS Quality Rating
5841 S MARYLAND AVE # MC3077, CHICAGO, IL 60637(773) 834-3231(773) 702-6649 Get Directions Write a Review

NPPES record last updated: March 23, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Ilayna Mehrtens Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ILAYNA MEHRTENS PHD (NPI 1548919632) is an individual psychologist in Chicago, Illinois and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1548919632
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. ILAYNA MEHRTENSCredential: PHD
Location Address5841 S MARYLAND AVE # MC3077Chicago, IL 60637-1443
Mailing Address5841 S Maryland Ave # Mc3077Chicago, IL 60637-1443 · (773) 834-3231 · Fax (773) 702-6649
Fax(773) 702-6649
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMarch 23, 2022
NPPES CertifiedMarch 23, 2022
✔ NPI 1548919632 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
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.
5841 S MARYLAND AVE # MC3077, Chicago, IL 60637

Accepted Insurance

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

Dr. Ilayna Mehrtens Phd 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.

PECOS PAC ID2860875275
PECOS Enrollment IDI20220818000048
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Ilayna Mehrtens reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.71/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality75.43
Promoting Interoperability100
Improvement Activities40

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.

Psychiatry & Neurology (Psychiatry)
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Psychiatry & Neurology (Psychiatry)
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Psychiatry & Neurology (Psychiatry)
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Psychiatry & Neurology (Psychiatry)
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Psychiatry & Neurology (Child & Adolescent Psychiatry)
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC3077
CHICAGO, IL 60637
Psychiatry & Neurology (Psychiatry)
5841 S MARYLAND AVE # MC3077
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 Ilayna Mehrtens's NPI number?

The NPI number for Ilayna Mehrtens is 1548919632. It was assigned to this individual provider in the NPPES registry on March 23, 2022.

Where is Ilayna Mehrtens located?

Ilayna Mehrtens practices at 5841 S Maryland Ave # Mc3077, Chicago, IL 60637. The listed phone number is (773) 834-3231.

What is Ilayna Mehrtens's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Ilayna Mehrtens enrolled in Medicare?

Yes. Ilayna Mehrtens 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 organizations bill Medicare for Ilayna Mehrtens's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ilayna Mehrtens reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and University Of Chicago (Chicago, IL). 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 Ilayna Mehrtens's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ilayna Mehrtens accept?

Health plans from Oscar Health list Ilayna Mehrtens 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 Ilayna Mehrtens was last updated on March 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.