THERESA LYNNE GIANNINI NP
NPI 1588775571
Nurse Practitioner - Adult Health in Indianapolis, IN

Active since August 31, 2006PECOS EnrolledAccepts Medicare Assignment
1801 N SENATE BLVD STE 4000, INDIANAPOLIS, IN 46202(317) 962-0500(317) 962-0501 Get Directions Write a Review

NPPES record last updated: August 5, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 5, 2025, Jan 20, 2021, Sep 19, 2016 (3 updates tracked since 2016).

About Theresa Lynne Giannini Np NPPES

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

THERESA LYNNE GIANNINI NP (NPI 1588775571) is an individual adult health provider in Indianapolis, Indiana, licensed in Indiana (71001965A) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Indiana University Health, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1588775571
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameTHERESA LYNNE GIANNINICredential: NP
Location Address1801 N SENATE BLVD STE 4000Indianapolis, IN 46202-1184
Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959
Fax(317) 962-0501
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateAugust 31, 2006
Last NPPES UpdateAugust 5, 20253 updates tracked since enumeration
NPPES CertifiedAugust 5, 2025
NPI 1588775571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License Licensed in IN · 71001965A
1801 N SENATE BLVD STE 4000, Indianapolis, IN 46202

Other Names 1

Former Name (1)Theresa L Brown Rn

Other Identifiers 4

Other000000491503Bcbs Pin
OtherP00351800Railroad Medicare Pin
OtherP01214693IN · Rr Medicare Ptan
Medicaid200842890AIN

Accepted Insurance

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

Theresa Lynne Giannini 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 ID6103843834
PECOS Enrollment IDI20051101000403
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.

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.
291 services206 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
27 services26 patients

Hospital Affiliations CMS Care Compare 3

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

Indiana University Health

Acute Care Hospitals · Indianapolis, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150056
Location1701 N Senate BlvdIndianapolis, IN 46202 · Marion County
Emergency services Birthing friendly

Iu Health West Hospital

Acute Care Hospitals · Avon, IN
4/5 CMS rating
OwnershipProprietary
CMS Certification Number150158
Location1111 N Ronald Reagan PkwyAvon, IN 46123 · Hendricks County
Emergency services Birthing friendly

Indiana University Health North Hospital

Acute Care Hospitals · Carmel, IN
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150161
Location11700 N Meridian StCarmel, IN 46032 · Hamilton County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46202 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
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
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 15

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

Nurse Practitioner (Family)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Nurse Practitioner (Acute Care)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Registered Nurse
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Nurse Practitioner (Family)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Internal Medicine (Interventional Cardiology)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Nurse Practitioner (Family)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Internal Medicine (Cardiovascular Disease)
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202
Physician Assistant
1801 N SENATE BLVD STE 4000
INDIANAPOLIS, IN 46202

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 Theresa Giannini's NPI number?

The NPI number for Theresa Giannini is 1588775571. It was assigned to this individual provider in the NPPES registry on August 31, 2006. The provider is also known as Theresa L Brown Rn.

Where is Theresa Giannini located?

Theresa Giannini practices at 1801 N Senate Blvd Ste 4000, Indianapolis, IN 46202. The listed phone number is (317) 962-0500.

What is Theresa Giannini's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Theresa Giannini enrolled in Medicare?

Yes. Theresa Giannini 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.

What insurance does Theresa Giannini accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, CareSource and UnitedHealthcare list Theresa Giannini as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Theresa Giannini affiliated with any hospitals?

According to CMS data, Theresa Giannini is affiliated with Indiana University Health, Iu Health West Hospital and Indiana University Health North Hospital.

When was this NPI record last updated?

The NPPES record for Theresa Giannini was last updated on August 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.