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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. CONSTANTA IULIA ALEXANDREANU M.D.
NPI 1871543041
Anesthesiology in Chicago, IL

Active since May 11, 2006PECOS Enrolled
1501 S CALIFORNIA AVE, CHICAGO, IL 60608(773) 257-6850 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Constanta Iulia Alexandreanu M.d. NPPES

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

DR. CONSTANTA IULIA ALEXANDREANU M.D. (NPI 1871543041) is an individual anesthesiology provider in Chicago, Illinois and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1997).

NPPES Registry Identity

NPI1871543041
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDR. CONSTANTA IULIA ALEXANDREANUCredential: M.D.
Location Address1501 S CALIFORNIA AVEChicago, IL 60608-1732
Mailing Address3537 Paysphere CirChicago, IL 60674-0035 · (708) 786-2900
Phone(773) 257-6850
Sole ProprietorNo
Medical School CMSOtherGraduated 1997
Enumeration DateMay 11, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1871543041 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
1501 S CALIFORNIA AVE, Chicago, IL 60608
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Other Identifiers 1

Medicaid036-114887-1IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Constanta Iulia Alexandreanu M.d. 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 ID7416966676
PECOS Enrollment IDI20060417000327, I20160105002756
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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
38 services35 patients

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.

STEPHANIE JORDAN
Community Health Worker
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 542-2000
DR. SURAIYA I ALVI M.D.
Pediatrics
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6843
MOUNT SINAI COMMUNITY FOUNDATION
Physician Assistant (Surgical)
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6663
DR. AMARDEEP SINGH M.D.
Emergency Medicine
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6843
DR. NANCY A SIBIGTROTH M.D.
Radiology (Diagnostic Radiology)
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6498
DR. SHANTA NATH M.D.
Pediatrics
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6184
DR. MOHAMMED AZHER KASSEM M.D
Internal Medicine
1501 S CALIFORNIA AVE, MT SINAI HOSPITAL, CANCER CARE CENTER
CHICAGO, IL 60608
Cook County (773) 257-6120
ALYNA CHIEN MD
Pediatrics
1501 S CALIFORNIA AVE
CHICAGO, IL 60608
Cook County (773) 257-6770

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 Constanta Alexandreanu's NPI number?

The NPI number for Constanta Alexandreanu is 1871543041. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Where is Constanta Alexandreanu located?

Constanta Alexandreanu practices at 1501 S California Ave, Chicago, IL 60608. The listed phone number is (773) 257-6850.

What is Constanta Alexandreanu's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Constanta Alexandreanu enrolled in Medicare?

Yes. Constanta Alexandreanu 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.

When was this NPI record last updated?

The NPPES record for Constanta Alexandreanu was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.