DR. GUNAR GONZALO SUBIETA BENITO MD
NPI 1629242524
Anesthesiology - Pain Medicine in Chicago, IL

Q: What is Gunar Subieta Benito's NPI number?

The NPI number for Gunar Subieta Benito is 1629242524. It was assigned to this individual provider in the NPPES registry on April 22, 2008.

Q: What is Gunar Subieta Benito's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Active since April 22, 2008PECOS EnrolledAccepts Medicare Assignment

1901 W HARRISON ST, CLINIC B, CHICAGO, IL 60612(312) 864-3220 Get Directions Write a Review

NPPES record last updated: April 30, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 30, 2021, Sep 14, 2020 (2 updates tracked since 2020).

On this page

About Dr. Gunar Gonzalo Subieta Benito Md NPPES

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

DR. GUNAR GONZALO SUBIETA BENITO MD (NPI 1629242524) is an individual pain medicine provider in Chicago, Illinois, licensed in Illinois (036119963) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1629242524

Entity TypeIndividualMale

Primary Taxonomy207LP2900X

Provider Legal NameDR. GUNAR GONZALO SUBIETA BENITOCredential: MD

Location Address1901 W HARRISON ST, CLINIC BChicago, IL 60612-3714

Mailing Address1901 W Harrison St, Clinic BChicago, IL 60612-3714 · (312) 864-3220

Phone(312) 864-3220

Sole ProprietorNo

Medical School CMSOtherGraduated 2002

Enumeration DateApril 22, 2008

Last NPPES UpdateApril 30, 20212 updates tracked since enumeration

NPPES CertifiedApril 30, 2021

✔ NPI 1629242524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

License✔ Licensed in IL · 036119963

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedAnesthesiologyTaxonomy 207L00000X · License 036-119963 (IL)

Also ListedInternal MedicineTaxonomy 207R00000X · License 036119963 (IL)

Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X · License 036119963 (IL)

1901 W HARRISON ST, Chicago, IL 60612

Open in Google Maps ↗

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. Gunar Gonzalo Subieta Benito Md 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 ID648436493

PECOS Enrollment IDI20120723000560

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

Medicare enrollment records show Gunar Subieta Benito reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cook County

Same address

Multi-Specialty

1901 W HARRISON ST
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
1,047 clinicians in this Medicare group

NPI 1245350040 (312) 864-4649

Insight Chicago, Inc.

3.3 mi

Internal Medicine

2525 S MICHIGAN AVE
Chicago, IL 60616

Reassigned Medicare billing, Illinois enrollment
354 clinicians in this Medicare group

NPI 1881261006 (312) 567-2000

Midwest Anesthesiologists, Ltd.

11 mi

Interventional Pain Medicine

4440 W 95TH ST
Oak Lawn, IL 60453

Reassigned Medicare billing, Illinois enrollment
93 clinicians in this Medicare group

NPI 1447209390 (708) 684-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

47 services39 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

17 services17 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

13 services11 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

John H Stroger Jr Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number140124

Location1901 W Harrison StChicago, IL 60612 · Cook County

Emergency services Birthing friendly

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.

JOHANNA WEFES-POTTER

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (847) 843-2000

ARON BERHANU GUDETTA MD

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

DR. LIGAYA VILLAFRANCA MARASIGAN M.D.

Obstetrics & Gynecology (Gynecology)

1901 W HARRISON ST
CHICAG, IL 60612

Cook County (312) 864-5901

TIN TIN THOMAS M.D.

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

COOK COUNTY

Pharmacy (Clinic Pharmacy)

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6189

HELEN ELIZABETH STRAUS MD

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-0060

MR. GLEN DERRICK TRAMMELL PA-C

Physician Assistant

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 869-7488

JOHN H STROGER, JR. HOSPITAL OF COOK COUNTY

General Acute Care Hospital

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 319-2085

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 Gunar Subieta Benito's NPI number?

The NPI number for Gunar Subieta Benito is 1629242524. It was assigned to this individual provider in the NPPES registry on April 22, 2008.

Where is Gunar Subieta Benito located?

Gunar Subieta Benito practices at 1901 W Harrison St Clinic B, Chicago, IL 60612. The listed phone number is (312) 864-3220.

What is Gunar Subieta Benito's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Gunar Subieta Benito enrolled in Medicare?

Yes. Gunar Subieta Benito 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 Gunar Subieta Benito's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gunar Subieta Benito reassigns Medicare benefits to 3 organizations: Cook County (Chicago, IL), Insight Chicago, Inc. (Chicago, IL) and Midwest Anesthesiologists, Ltd. (Oak Lawn, 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 Gunar Subieta Benito's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gunar Subieta Benito affiliated with any hospitals?

According to CMS data, Gunar Subieta Benito is affiliated with John H Stroger Jr Hospital.

When was this NPI record last updated?

The NPPES record for Gunar Subieta Benito was last updated on April 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.