BARBARA ANNE O'BRIEN DO
NPI 1437211794
Family Medicine - Adult Medicine in Ellisville, MO

Q: What is Barbara O'brien's NPI number?

The NPI number for Barbara O'brien is 1437211794. It was assigned to this individual provider in the NPPES registry on December 14, 2006.

Q: What is Barbara O'brien's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Adult Medicine, with taxonomy code 207QA0505X.

Q: When was this NPI record last updated?

The NPPES record for Barbara O'brien was last updated on July 16, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 December 14, 2006PECOS EnrolledAccepts Medicare Assignment

225 CLARKSON RD, ELLISVILLE, MO 63011(636) 685-7715(314) 590-5916 Get Directions Write a Review

NPPES record last updated: July 16, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Barbara Anne O'brien Do NPPES

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

BARBARA ANNE O'BRIEN DO (NPI 1437211794) is an individual adult medicine provider in Ellisville, Missouri, licensed in Missouri (2003000621) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (2000).

NPPES Registry Identity

NPI1437211794

Entity TypeIndividualFemale

Primary Taxonomy207QA0505X

Provider Legal NameBARBARA ANNE O'BRIENCredential: DO

Location Address225 CLARKSON RDEllisville, MO 63011-2278

Mailing Address225 Clarkson RdEllisville, MO 63011-2278 · (636) 230-5050 · Fax (636) 230-5057

Phone(636) 685-7715

Fax(314) 590-5916

Sole ProprietorNo

Medical School CMSAt Still University Of Health Sciences, College Of Osteo Med, KirksvilleGraduated 2000

Enumeration DateDecember 14, 2006

Last NPPES UpdateJuly 16, 2018

✔ NPI 1437211794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily Medicine · Adult MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207QA0505X

License✔ Licensed in MO · 2003000621

Definition

The National Uniform Claim Committee (NUCC) recommends code 207QA0505X not be used. Choose a more appropriate code.

225 CLARKSON RD, Ellisville, MO 63011

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Other Identifiers 10

Other00000001482Essence

Other8008001Cigna

Other000000014182MO · Essence

Other322212Ghp

Other036117870IL · Bcbs Il

Other182228MO · Bcbs

Medicaid209258102MO

Other2312375Uhc

Other633328Healthlink

Other7432465Aetna

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.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

Barbara Anne O'brien Do 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 ID4688573389

PECOS Enrollment IDI20031231000671, I20070503000043

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 Barbara O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Westglen Family Physicians, LLC

Same address

Family Medicine

225 CLARKSON RD
Ellisville, MO 63011

Reassigned Medicare billing, Missouri enrollment
13 clinicians in this Medicare group

NPI 1114957354 (366) 857-7156

Fenton Family Physicians, LLC

9.9 mi

Family Medicine

774 GRAVOIS BLUFFS BLVD STE B
Fenton, MO 63026

Reassigned Medicare billing, Missouri enrollment
9 clinicians in this Medicare group

NPI 1679939128 (636) 685-7734

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 14

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.

310 services200 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

183 services183 patients

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.

113 services89 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

55 services52 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

46 services46 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

45 services45 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

22 services21 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

18 services15 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

16 services16 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

15 services15 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

14 services13 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

14 services14 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

13 services13 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260020

Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County

Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260108

Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County

Emergency services Birthing friendly

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260179

Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63011 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

$86.32 typical visit price

range $55.65 – $169.38

Typical copayment $21.58 (range $13.91 – $42.34)

Most-billed visit code 99203

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

10 suppliers39 claims95 services$5.34 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

7 suppliers15 claims15 services$1.01 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 12

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

WESTGLEN FAMILY PHYSICIANS, LLC

Family Medicine

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (366) 857-7156

WILLIAM MARKUS KOEPPEL D.O.

Family Medicine

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (706) 865-4001

WESTGLEN FAMILY PHYSICIANS, LLC

Clinic/Center (Primary Care)

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (636) 685-7715

JEANNE MARIE RITCHIE

Physician Assistant

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (636) 230-5050

DR. CYNTHIA J POELKER M.D.

Family Medicine

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (636) 230-5050

EILEEN HOLT NP

Nurse Practitioner (Family)

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (636) 685-7715

CHRISTINE HELMBRECHT FNP-BC

Nurse Practitioner (Family)

225 CLARKSON RD
BALLWIN, MO 63011

St. Louis County (636) 685-7715

DRS. BARAKE & GENOVA, LLC

Internal Medicine

225 CLARKSON RD
ELLISVILLE, MO 63011

St. Louis County (636) 207-8880

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 Barbara O'brien's NPI number?

The NPI number for Barbara O'brien is 1437211794. It was assigned to this individual provider in the NPPES registry on December 14, 2006.

Where is Barbara O'brien located?

Barbara O'brien practices at 225 Clarkson Rd, Ellisville, MO 63011. The listed phone number is (636) 685-7715.

What is Barbara O'brien's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Adult Medicine, with taxonomy code 207QA0505X.

Is Barbara O'brien enrolled in Medicare?

Yes. Barbara 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.

Which organizations bill Medicare for Barbara O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Barbara O'brien reassigns Medicare benefits to 2 organizations: Westglen Family Physicians, LLC (Ellisville, MO) and Fenton Family Physicians, LLC (Fenton, MO). 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 Barbara O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Barbara O'brien accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Barbara O'brien 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 Barbara O'brien affiliated with any hospitals?

According to CMS data, Barbara O'brien is affiliated with Mercy Hospital St Louis, Missouri Baptist Medical Center and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Barbara O'brien was last updated on July 16, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.