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MRS. MARIA TERESA N. OBENZA MSN, FNP-BC
NPI 1649520990
Nurse Practitioner - Family in Barrington, IL

Active since September 13, 2012PECOS EnrolledAccepts Medicare Assignment
101 S NORTHWEST HWY, BARRINGTON, IL 60010(866) 389-2727 Get Directions Write a Review

NPPES record last updated: July 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 10, 2022, Jul 2, 2020, May 28, 2020 (3 updates tracked since 2020).

About Mrs. Maria Teresa N. Obenza Msn, Fnp-bc NPPES

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

MRS. MARIA TERESA N. OBENZA MSN, FNP-BC (NPI 1649520990) is an individual family provider in Barrington, Illinois, licensed in Illinois (209009480) and active in the NPI registry since September 2012. She is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1649520990
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. MARIA TERESA N. OBENZACredential: MSN, FNP-BC
Location Address101 S NORTHWEST HWYBarrington, IL 60010-4607
Mailing Address1855 W Irving Park RdSchaumburg, IL 60193-3516 · (866) 389-2727
Phone(866) 389-2727
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateSeptember 13, 2012
Last NPPES UpdateJuly 16, 20253 updates tracked since enumeration
NPPES CertifiedJuly 16, 2025
✔ NPI 1649520990 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 · 209009480
101 S NORTHWEST HWY, Barrington, IL 60010
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, 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

Mrs. Maria Teresa N. Obenza Msn, 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 ID5597908483
PECOS Enrollment IDI20130824000101
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

4

Medicare enrollment records show Maria Teresa Obenza reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Access Community Health Network
8.0 mi
Federally Qualified Health Center (FQHC)
121 S WILKE RD, SUITE 310
Arlington Heights, IL 60005
  • Reassigned Medicare billing, Illinois enrollment
  • 413 clinicians in this Medicare group
NPI 1487987459 (847) 259-3728
Central Dupage Hospital Association
19 mi
General Acute Care Hospital
25 NORTH WINFIELD RD.
Winfield, IL 60190
  • Reassigned Medicare billing, Illinois enrollment
  • 129 clinicians in this Medicare group
NPI 1003864810 (630) 933-1600
Minuteclinic Diagnostic Of Illinois PLLC
46 mi
Family
11200 W LINCOLN HWY
Mokena, IL 60448
  • Reassigned Medicare billing, Illinois enrollment
  • 223 clinicians in this Medicare group
NPI 1356485809 (866) 389-2727
Minuteclinic Primary Care Illinois PLLC
46 mi
Family
11200 LINCOLN HWY
Mokena, IL 60448
  • Reassigned Medicare billing, Illinois enrollment
  • 115 clinicians in this Medicare group
NPI 1528875564 (866) 389-2727

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 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.
36 services32 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60010 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 10

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

RIPPLE PATEL PHARM D.
Pharmacist
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105
SARAH JACOBS
Nurse Practitioner (Family)
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105
SAJEENA KISHORE NP
Nurse Practitioner (Family)
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (866) 389-2727
STEPHANIE LYNN DENIGER NP-C
Nurse Practitioner (Family)
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (612) 590-8930
DR. IBUKUNOLUWA AREGBESOLA PHARM. D
Pharmacist
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105
VIOLETA KOZLOVSKAJA APRN
Nurse Practitioner (Family)
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105
HIGHLAND PARK CVS LLC
Pharmacy
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105
ILONA WARCHOLEK
Pharmacist
101 S NORTHWEST HWY
BARRINGTON, IL 60010
Cook County (847) 381-4105

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 Maria Teresa Obenza's NPI number?

The NPI number for Maria Teresa Obenza is 1649520990. It was assigned to this individual provider in the NPPES registry on September 13, 2012.

Where is Maria Teresa Obenza located?

Maria Teresa Obenza practices at 101 S Northwest Hwy, Barrington, IL 60010. The listed phone number is (866) 389-2727.

What is Maria Teresa Obenza's specialty?

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

Is Maria Teresa Obenza enrolled in Medicare?

Yes. Maria Teresa Obenza 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 Maria Teresa Obenza's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Teresa Obenza reassigns Medicare benefits to 4 organizations: Access Community Health Network (Arlington Heights, IL), Central Dupage Hospital Association (Winfield, IL), Minuteclinic Diagnostic Of Illinois PLLC (Mokena, IL) and Minuteclinic Primary Care Illinois PLLC (Mokena, 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 Maria Teresa Obenza's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Maria Teresa Obenza accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Maria Teresa Obenza 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.

When was this NPI record last updated?

The NPPES record for Maria Teresa Obenza was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.