CATHERINE GIANAN NP
NPI 1174616320
Nurse Practitioner - Family in Romeoville, IL

Q: What is Catherine Gianan's NPI number?

The NPI number for Catherine Gianan is 1174616320. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Q: What is Catherine Gianan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Catherine Gianan was last updated on May 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since October 02, 2006PECOS EnrolledAccepts Medicare Assignment

1239 WINDHAM PKWY, ROMEOVILLE, IL 60446(815) 942-6323(815) 941-0308 Get Directions Write a Review

NPPES record last updated: May 20, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 19, 2024, May 24, 2023, Feb 18, 2021 (3 updates tracked since 2021).

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About Catherine Gianan Np NPPES

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

CATHERINE GIANAN NP (NPI 1174616320) is an individual family provider in Romeoville, Illinois, licensed in Illinois (209006128) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2005).

NPPES Registry Identity

NPI1174616320

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameCATHERINE GIANANCredential: NP

Location Address1239 WINDHAM PKWYRomeoville, IL 60446-1608

Mailing AddressPo Box 713260Chicago, IL 60677-1260 · (630) 469-9200

Phone(815) 942-6323

Fax(815) 941-0308

Sole ProprietorNo

Medical School CMSOtherGraduated 2005

Enumeration DateOctober 2, 2006

Last NPPES UpdateMay 20, 20243 updates tracked since enumeration

NPPES CertifiedMay 20, 2024

✔ NPI 1174616320 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in IL · 209006128

1239 WINDHAM PKWY, Romeoville, IL 60446

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Catherine Gianan Np 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 ID8325048333

PECOS Enrollment IDI20061221000407

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 Catherine Gianan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gianan Health PLLC

0.6 mi

Psychiatric/Mental Health

899 S WEBER RD STE A
Bolingbrook, IL 60490

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

NPI 1467201210 (571) 331-4622

Dupage Medical Group Ltd

13 mi

Multi-Specialty

1100 W 31ST ST, STE 300
Downers Grove, IL 60515

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

NPI 1801833983 (630) 469-9200

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 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.

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.

380 services115 patients

Psychotherapy with evaluation and management visit, 30 minutes 90833

Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.

199 services84 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60446 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

$93.02 typical visit price

range $59.81 – $181.38

Typical copayment $23.25 (range $14.95 – $45.34)

Most-billed visit code 99203

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

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.

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.

WIMOL ANN MITRAKUL MD

Family Medicine