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DR. COURTNEY ANN O'BRIEN DO
NPI 1609396514
Internal Medicine - Rheumatology in Simi Valley, CA

Active since June 21, 2017PECOS EnrolledAccepts Medicare Assignment
86.1/100
CMS Quality Rating
2655 1ST ST STE 380, SIMI VALLEY, CA 93065(805) 583-7640(805) 583-7641 Get Directions Write a Review

NPPES record last updated: July 29, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 29, 2022, Jul 21, 2022, Jun 24, 2020 and 2 more (5 updates tracked since 2017).

About Dr. Courtney Ann O'brien Do NPPES

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

DR. COURTNEY ANN O'BRIEN DO (NPI 1609396514) is an individual rheumatology provider in Simi Valley, California, licensed in California (20A18469) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS and is a graduate of Nova Southeastern College Of Osteo Medicine (2017).

NPPES Registry Identity

NPI1609396514
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameDR. COURTNEY ANN O'BRIENCredential: DO
Location Address2655 1ST ST STE 380Simi Valley, CA 93065-1551
Mailing Address5767 W Century Blvd Suite 400Los Angeles, CA 90095-5631 · (310) 301-8707 · Fax (310) 301-8751
Phone(805) 583-7640
Fax(805) 583-7641
Sole ProprietorNo
Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 2017
Enumeration DateJune 21, 2017
Last NPPES UpdateJuly 29, 20225 updates tracked since enumeration
NPPES CertifiedJuly 29, 2022
✔ NPI 1609396514 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · 20A18469
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
2655 1ST ST STE 380, Simi Valley, CA 93065
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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

Dr. Courtney Ann 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 ID9537430020
PECOS Enrollment IDI20220616001464
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 10

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.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
960 services11 patients
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.
349 services190 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
73 services73 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.
63 services47 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
54 services54 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
44 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93065 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
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.1/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.93
Promoting Interoperability100
Improvement Activities40
Cost66.73

Referred Medical Equipment & Supplies CMS DME claims

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

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$916.67 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

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

CAROLINE AGUIRRE GO FNP
Nurse Practitioner
2655 1ST ST STE 380
SIMI VALLEY, CA 93065
Ventura County (805) 583-7640

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 Courtney O'brien's NPI number?

The NPI number for Courtney O'brien is 1609396514. It was assigned to this individual provider in the NPPES registry on June 21, 2017.

Where is Courtney O'brien located?

Courtney O'brien practices at 2655 1st St Ste 380, Simi Valley, CA 93065. The listed phone number is (805) 583-7640.

What is Courtney O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Courtney O'brien enrolled in Medicare?

Yes. Courtney 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.

When was this NPI record last updated?

The NPPES record for Courtney O'brien was last updated on July 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.