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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARLENE M ALEJOS M.D.
NPI 1619962933
Specialist in Tinley Park, IL

Active since September 13, 2005
7400 183RD ST, TINLEY PARK, IL 60477(708) 614-4000 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Marlene M Alejos M.d. NPPES

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

DR. MARLENE M ALEJOS M.D. (NPI 1619962933) is an individual specialist in Tinley Park, Illinois, licensed in Illinois (36054594) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1619962933
Entity TypeIndividualFemale
Primary Taxonomy174400000X
Provider Legal NameDR. MARLENE M ALEJOSCredential: M.D.
Location Address7400 183RD STTinley Park, IL 60477-3688
Mailing Address7400 183rd StTinley Park, IL 60477-3688 · (708) 614-4000
Phone(708) 614-4000
Sole ProprietorNo
Enumeration DateSeptember 13, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1619962933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in IL · 36054594
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
7400 183RD ST, Tinley Park, IL 60477
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Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SHARON MANGUM M.D.
Specialist
7400 183RD ST, TINLEY PARK MENTAL HEALTH CENTER
TINLEY PARK, IL 60477
Cook County (708) 614-4000
DR. STUART S RICH M.D.
Specialist
7400 183RD ST, TINLEY PARK MENTAL HEALTH CENTER
TINLEY PARK, IL 60477
Cook County (708) 614-4000
ILLINOIS DEPARTMENT OF HUMAN SERVICES
Psychiatric Hospital
7400 183RD ST
TINLEY PARK, IL 60477
Cook County (708) 614-4041
DR. TIMOTHY P OLENEK D.O.
Specialist
7400 183RD ST
TINLEY PARK, IL 60477
Cook County (708) 614-4000
TINLEY PARK MENTAL HEALTH CENTER
Psychiatric Unit
7400 183RD ST
TINLEY PARK, IL 60477
Cook County (708) 614-4041
DR. GARDENIA PAJUNAR-LI M.D.
Family Medicine
7400 183RD ST, TINLEY PARK MENTAL HEALTH CENTER
TINLEY PARK, IL 60477
Cook County (708) 614-4000
ILLINOIS DEPARTMENT OF HUMAN SERVICES
Specialist
7400 183RD ST
TINLEY PARK, IL 60477
Cook County (708) 614-4000
TINLEY PARK MENTAL HEALTH CENTER
Psychiatric Unit
7400 183RD ST
TINLEY PARK, IL 60477
Cook County (708) 614-4002

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 Marlene Alejos's NPI number?

The NPI number for Marlene Alejos is 1619962933. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Where is Marlene Alejos located?

Marlene Alejos practices at 7400 183rd St, Tinley Park, IL 60477. The listed phone number is (708) 614-4000.

What is Marlene Alejos's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Marlene Alejos was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.