GISELLE MARTINEZ-O'CONNOR MSN, APRN, FNP-BC
NPI 1447801998
Nurse Practitioner - Family in Chicago, IL

Active since September 26, 2019PECOS EnrolledAccepts Medicare Assignment
87.08/100
CMS Quality Rating
1740 W TAYLOR ST, CHICAGO, IL 60612(312) 996-4008 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 1, 2026, Oct 8, 2025, Feb 11, 2025 and 4 more (7 updates tracked since 2019).

About Giselle Martinez-o'connor Msn, Aprn, Fnp-bc NPPES

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

GISELLE MARTINEZ-O'CONNOR MSN, APRN, FNP-BC (NPI 1447801998) is an individual family provider in Chicago, Illinois, licensed in Illinois (277005408) and active in the NPI registry since September 2019. She is enrolled in Medicare PECOS, is affiliated with University Of Illinois Hospital And Clinics, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1447801998
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameGISELLE MARTINEZ-O'CONNORCredential: MSN, APRN, FNP-BC
Location Address1740 W TAYLOR STChicago, IL 60612-7232
Mailing Address17800 Kedzie AveHazel Crest, IL 60429-2029 · (708) 799-8000 · Fax (773) 967-5808
Sole ProprietorYes
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2019
Enumeration DateSeptember 26, 2019
Last NPPES UpdateJune 1, 20267 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
NPI 1447801998 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in IL · 277005408
Also ListedNurse PractitionerTaxonomy 363L00000X · License 277005408 (IL)
1740 W TAYLOR ST, Chicago, IL 60612

Secondary Practice Locations 2

Location 15211 W LawrenceChicago, IL 60630 · Phone (847) 644-9980
Location 29977 Woods DrSkokie, IL 60077 · Phone (224) 364-2273

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

Giselle Martinez-o'connor Msn, Aprn, Fnp-bc 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 ID1456682145
PECOS Enrollment IDI20191010001496
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 2

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
47 services13 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
27 services26 patients

Hospital Affiliations CMS Care Compare

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

University Of Illinois Hospital And Clinics

Acute Care Hospitals · Chicago, IL
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number140150
Location1740 West Taylor St Suite 1400Chicago, IL 60612 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

87.08/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.79
Promoting Interoperability100
Improvement Activities40
Cost52.82

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.

Occupational Therapist
1740 W TAYLOR ST, C100
CHICAGO, IL 60612
Physician Assistant (Surgical)
1740 W TAYLOR ST, 3F OCC
CHICAGO, IL 60612
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
1740 W TAYLOR ST
CHICAGO, IL 60612
Anesthesiology
1740 W TAYLOR ST
CHICAGO, IL 60612
Pediatrics (Neonatal-Perinatal Medicine)
1740 W TAYLOR ST
CHICAGO, IL 60612
Family Medicine
1740 W TAYLOR ST
CHICAGO, IL 60612
Ophthalmology
1740 W TAYLOR ST
CHICAGO, IL 60612
Emergency Medicine
1740 W TAYLOR ST
CHICAGO, IL 60612

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 Giselle Martinez-o'connor's NPI number?

The NPI number for Giselle Martinez-o'connor is 1447801998. It was assigned to this individual provider in the NPPES registry on September 26, 2019.

Where is Giselle Martinez-o'connor located?

Giselle Martinez-o'connor practices at 1740 W Taylor St, Chicago, IL 60612. The listed phone number is (312) 996-4008.

What is Giselle Martinez-o'connor's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Giselle Martinez-o'connor enrolled in Medicare?

Yes. Giselle Martinez-o'connor 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.

Is Giselle Martinez-o'connor affiliated with any hospitals?

According to CMS data, Giselle Martinez-o'connor is affiliated with University Of Illinois Hospital And Clinics.

When was this NPI record last updated?

The NPPES record for Giselle Martinez-o'connor was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.