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CHARLOTTE A O'BRIEN CRNP
NPI 1902123938
Nurse Practitioner - Adult Health in Harwood Heights, IL

Active since April 30, 2010PECOS EnrolledAccepts Medicare Assignment
4747 N HARLEM AVE, HARWOOD HEIGHTS, IL 60706(773) 798-5200(708) 741-1014 Get Directions Write a Review

NPPES record last updated: May 12, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 12, 2026, Aug 5, 2025, Jun 16, 2025 and 1 more (4 updates tracked since 2024).

About Charlotte A O'brien Crnp NPPES

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

CHARLOTTE A O'BRIEN CRNP (NPI 1902123938) is an individual adult health provider in Harwood Heights, Illinois, licensed in Illinois (209012174) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Amita Health Resurrection Medical Center, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1902123938
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameCHARLOTTE A O'BRIENCredential: CRNP
Location Address4747 N HARLEM AVEHarwood Heights, IL 60706-4600
Mailing AddressPo Box 746715Atlanta, GA 30374-6715 · (773) 798-5200 · Fax (708) 741-1014
Phone(773) 798-5200
Fax(708) 741-1014
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateApril 30, 2010
Last NPPES UpdateMay 12, 20264 updates tracked since enumeration
NPPES CertifiedMay 12, 2026
✔ NPI 1902123938 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
Licenses✔ Licensed in IL · 209012174✔ Licensed in PA · SP010385
4747 N HARLEM AVE, Harwood Heights, IL 60706
Open in Google Maps ↗

Other Names 1

Former Name (1)Charlotte W Allen Crnp

Secondary Practice Location 1

Location 14848 W Irving Park RdChicago, IL 60641-2718 · Phone (773) 724-6200 · Fax (773) 866-8015

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

Charlotte A O'brien Crnp 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 ID6002945961
PECOS Enrollment IDI20150630000383
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.

Hospital Affiliations CMS Care Compare 2

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

Amita Health Resurrection Medical Center

Acute Care Hospitals · Chicago, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140117
Location7435 W Talcott AvenueChicago, IL 60631 · Cook County
Emergency services Birthing friendly

Advocate Lutheran General Hospital

Acute Care Hospitals · Park Ridge, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140223
Location1775 Dempster StPark Ridge, IL 60068 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60706 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.

Other Providers at the Same Location NPPES 6

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

DR. TARA ANNE CULLIGAN D.D.S.
Dentist (General Practice)
4747 N HARLEM AVE, SUITE D
HARWOOD HEIGHTS, IL 60706
Cook County (708) 867-4700
VINCENT A SIMONE DDS
Dentist
4747 N HARLEM AVE, SUITE D
HARWOOD HEIGHTS, IL 60706
Cook County (708) 867-4700
BEATA BARBARA BINSKI
Nurse Practitioner (Gerontology)
4747 N HARLEM AVE
HARWOOD HEIGHTS, IL 60706
Cook County (773) 798-5200
MELISSA SARA DRAB DDS
Dentist
4747 N HARLEM AVE
HARWOOD HEIGHTS, IL 60706
Cook County (708) 867-4700
DR. DAVID R BERNI DDS
Dentist
4747 N HARLEM AVE, SUITE D
HARWOOD HGTS, IL 60706
Cook County (708) 867-4700
MONIKA CACHRO PA-C
Physician Assistant
4747 N HARLEM AVE
HARWOOD HEIGHTS, IL 60706
Cook County (773) 798-5200

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 Charlotte O'brien's NPI number?

The NPI number for Charlotte O'brien is 1902123938. It was assigned to this individual provider in the NPPES registry on April 30, 2010. The provider is also known as Charlotte W Allen Crnp.

Where is Charlotte O'brien located?

Charlotte O'brien practices at 4747 N Harlem Ave, Harwood Heights, IL 60706. The listed phone number is (773) 798-5200.

What is Charlotte O'brien's specialty?

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

Is Charlotte O'brien enrolled in Medicare?

Yes. Charlotte O'brien 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 Charlotte O'brien affiliated with any hospitals?

According to CMS data, Charlotte O'brien is affiliated with Amita Health Resurrection Medical Center and Advocate Lutheran General Hospital.

When was this NPI record last updated?

The NPPES record for Charlotte O'brien was last updated on May 12, 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.