DR. AARON MICHAEL O'BRIEN MD
NPI 1114155074
Orthopaedic Surgery in St George, UT

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

The NPI number for Aaron O'brien is 1114155074. It was assigned to this individual provider in the NPPES registry on June 30, 2009.

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

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Aaron O'brien was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 June 30, 2009PECOS EnrolledAccepts Medicare Assignment

1490 E FOREMASTER DR, STE 150, ST GEORGE, UT 84790(435) 628-9393(435) 628-9382 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 17, 2020, Feb 11, 2019 (2 updates tracked since 2019).

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About Dr. Aaron Michael O'brien Md NPPES

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

DR. AARON MICHAEL O'BRIEN MD (NPI 1114155074) is an individual orthopaedic surgery provider in St George, Utah, licensed in Utah (9349002-1205) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Cedar City Hospital, and maintains a secondary practice location in Mesquite.

NPPES Registry Identity

NPI1114155074

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameDR. AARON MICHAEL O'BRIENCredential: MD

Location Address1490 E FOREMASTER DR, STE 150St George, UT 84790-4488

Mailing Address1055 N 500 W, Attn CredentialingProvo, UT 84604-3305 · (801) 354-8225 · Fax (801) 418-0941

Phone(435) 628-9393

Fax(435) 628-9382

Sole ProprietorNo

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 2009

Enumeration DateJune 30, 2009

Last NPPES UpdateNovember 27, 20232 updates tracked since enumeration

NPPES CertifiedMarch 17, 2020

✔ NPI 1114155074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in UT · 9349002-1205✔ Licensed in NV · 18526

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

1490 E FOREMASTER DR, St George, UT 84790

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Secondary Practice Location 1

Location 1330 Falcon Ridge Pkwy Ste 400AMesquite, NV 89027-8881 · Phone (435) 628-9393 · Fax (435) 928-9382

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc. 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

Dr. Aaron Michael O'brien Md 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 ID4486871464

PECOS Enrollment IDI20150805009271, I20190809001363

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 Reassignment

Medicare enrollment records show Aaron O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Revere Health PC

243 mi

Multi-Specialty

1055 N 500 W
Provo, UT 84604

Reassigned Medicare billing, Nevada and Utah enrollments
11 clinicians in this Medicare group

NPI 1093764805 (801) 429-8000

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 26

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, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

923 services138 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

399 services239 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.

318 services239 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.

311 services232 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

303 services190 patients

Aspiration and/or injection of fluid from small joint using ultrasound guidance 20604

This procedure involves using ultrasound to accurately locate a small joint. A needle is then carefully inserted to remove fluid (aspiration) or inject medication. This can help diagnose or treat joint issues. It's generally safe and minimally invasive.

125 services31 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.

85 services85 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

73 services67 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

68 services65 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

66 services64 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.

43 services43 patients

Aspiration and/or injection of fluid from medium joint 20605

This procedure involves a needle being inserted into a medium-sized joint, such as a knee or shoulder, to remove (aspirate) excess fluid. Sometimes, medication may also be injected into the joint to reduce inflammation and pain.

41 services29 patients

Aspiration and/or injection of fluid from small joint 20600

This procedure involves inserting a thin needle into a small joint to remove (aspirate) or inject fluid. It can help diagnose conditions, relieve discomfort, or administer medication directly into the joint. It's generally safe with minimal discomfort.

38 services29 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

33 services33 patients

Removal of noncancer thickened skin growth, 1 growth 11055

This procedure involves the removal of a thickened skin growth that is not cancerous. A healthcare professional will safely extract the growth, usually under local anesthesia. This process helps maintain skin health and prevent potential complications.

31 services26 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

24 services22 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

23 services15 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

22 services14 patients

Correction of toe joint deformity 28285

Correction of toe joint deformity is a procedure to fix misshapen toe joints. This can involve realigning the bones, removing bone or tissue, or implanting devices to improve joint function. It can help reduce pain and improve mobility.

20 services17 patients

Injection of anesthetic and/or steroid drug into foot nerve 64455

This procedure involves injecting a combination of anesthetic and/or steroid medication into a nerve in your foot. It's designed to alleviate pain and inflammation. You may experience temporary numbness or relief in the treated area.

19 services17 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.

19 services17 patients

Removal of deep implant from bone 20680

This procedure involves the careful extraction of an implant deeply embedded in a bone. A specialist makes a small incision, then utilizes precise instruments to reach and safely remove the implant. The area is then closed and monitored for healing.

17 services13 patients

Other procedure on muscle or bone 20999

"Other procedure on muscle or bone" refers to a range of medical interventions not classified under standard procedures. These might involve repairing muscle or bone damage, removing growths, or restoring function. It's performed by a specialist using various techniques, based on individual patient needs and condition.

14 services14 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

13 services11 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

12 services11 patients

Reconstruction of ankle joint with prosthesis 27702

Reconstruction of the ankle joint with a prosthesis is a surgical procedure to replace a damaged ankle with an artificial joint. This is done to alleviate pain, improve mobility, and restore function in individuals with severe ankle conditions.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Cedar City Hospital

Acute Care Hospitals · Cedar City, UT

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number460007

Location1303 North Main StreetCedar City, UT 84721 · Iron County

Emergency services Birthing friendly

St. George Regional Hospital

Acute Care Hospitals · St George, UT

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number460021

Location1380 East Medical Center DriveSt George, UT 84790 · Washington County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 84790 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

$84.41 typical visit price

range $54.34 – $166.03

Typical copayment $21.10 (range $13.58 – $41.50)

Most-billed visit code 99203

Established Patient

$68.01 typical visit price

range $17.23 – $135.20

Typical copayment $17.00 (range $4.30 – $33.80)

Most-billed visit code 99213

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.

Ankle orthosis, ankle gauntlet or similar, with or without joints, prefabricated, off-the-shelf L1902

DME-Orthotic Devices · category DF003N

1 supplier14 claims14 services$62.01 avg. paid by Medicare

Walking boot, pneumatic and/or vacuum, with or without joints, with or without interface material, prefabricated, off-the-shelf L4361

DME-Orthotic Devices · category DF003N

3 suppliers58 claims58 services$232.07 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 20

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

AUBREY HOOPES

Recreation Therapist

1490 E FOREMASTER DR
ST GEORGE, UT 84790

Washington County (435) 674-5194

ROBERT M COPE MD PC

Urology

1490 E FOREMASTER DR, 300
SAINT GEORGE, UT 84790

Washington County (435) 688-2104

BRITTANY GARCIA AU.D.

Audiologist

1490 E FOREMASTER DR, SUITE 360
ST GEORGE, UT 84790

Washington County (435) 688-8866

MELISSA J HINTON DNP

Nurse Practitioner (Family)

1490 E FOREMASTER DR, STE 220
ST GEORGE, UT 84790

Washington County (435) 216-7000

DR. METTE HANSEN MD

Physical Medicine & Rehabilitation

1490 E FOREMASTER DR
ST GEORGE, UT 84790

Washington County (435) 628-9393

RAY STAYNER RICHARDS M.D.

Radiology (Radiation Oncology)

1490 E FOREMASTER DR, BUILDING C
ST GEORGE, UT 84790

Washington County (435) 627-5327

DR. MICHAEL ANDERSON M.D.

Orthopaedic Surgery

1490 E FOREMASTER DR, #150
ST GEORGE, UT 84790

Washington County (435) 628-9393

SPENCER W STIRLAND AUD

Audiologist

1490 E FOREMASTER DR, SUITE 360
ST GEORGE, UT 84790

Washington County (435) 688-8866

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 Aaron O'brien's NPI number?

The NPI number for Aaron O'brien is 1114155074. It was assigned to this individual provider in the NPPES registry on June 30, 2009.

Where is Aaron O'brien located?

Aaron O'brien practices at 1490 E Foremaster Dr Ste 150, St George, UT 84790. The listed phone number is (435) 628-9393.

What is Aaron O'brien's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Aaron O'brien enrolled in Medicare?

Yes. Aaron 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 organization bills Medicare for Aaron O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron O'brien reassigns Medicare benefits to Revere Health PC (Provo, UT). The 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 Aaron O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron O'brien accept?

Health plans from Blue Cross Blue Shield of Arizona, BridgeSpan Health Company, Imperial Health Plan of the Southwest, Inc., Molina Healthcare and Regence BlueCross BlueShield of Utah and 2 other insurers list Aaron 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 Aaron O'brien affiliated with any hospitals?

According to CMS data, Aaron O'brien is affiliated with Cedar City Hospital and St. George Regional Hospital.

When was this NPI record last updated?

The NPPES record for Aaron O'brien was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.