DR. COLIN WOODWARD O'BRIEN MD
NPI 1245768886
Internal Medicine - Cardiovascular Disease in Sandy Springs, GA

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

The NPI number for Colin O'brien is 1245768886. It was assigned to this individual provider in the NPPES registry on May 26, 2017.

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

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Colin O'brien was last updated on June 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 May 26, 2017PECOS EnrolledAccepts Medicare Assignment

68.55/100

CMS Quality Rating

6135 BARFIELD RD STE 100, SANDY SPRINGS, GA 30328(404) 962-6000(404) 962-6001 Get Directions Write a Review

NPPES record last updated: June 1, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 1, 2023, May 26, 2017 (2 updates tracked since 2017).

On this page

About Dr. Colin Woodward O'brien Md NPPES

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

DR. COLIN WOODWARD O'BRIEN MD (NPI 1245768886) is an individual cardiovascular disease provider in Sandy Springs, Georgia, licensed in Georgia (88949) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS, is affiliated with Northside Hospital Forsyth, and is a graduate of Stanford University School Of Medicine (2017).

NPPES Registry Identity

NPI1245768886

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. COLIN WOODWARD O'BRIENCredential: MD

Location Address6135 BARFIELD RD STE 100Sandy Springs, GA 30328-4308

Mailing Address6135 Barfield Rd Ste 100Sandy Springs, GA 30328-4308 · (404) 962-6000 · Fax (404) 962-6001

Phone(404) 962-6000

Fax(404) 962-6001

Sole ProprietorNo

Medical School CMSStanford University School Of MedicineGraduated 2017

Enumeration DateMay 26, 2017

Last NPPES UpdateJune 1, 20232 updates tracked since enumeration

NPPES CertifiedJune 1, 2023

✔ NPI 1245768886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in GA · 88949

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

6135 BARFIELD RD STE 100, Sandy Springs, GA 30328

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of Alabama 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. Colin Woodward 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 ID3678845708

PECOS Enrollment IDI20230720000940

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 Colin O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northside Cardiovascular Professional Services, LLC

10 mi

Cardiovascular Disease

1285 UPPER HEMBREE RD
Roswell, GA 30076

Reassigned Medicare billing, Georgia enrollment
175 clinicians in this Medicare group

NPI 1518979921 (855) 709-4535

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 25

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.

281 services163 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.

193 services158 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

153 services150 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

117 services97 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

116 services29 patients

Technetium tc-99m tetrofosmin, diagnostic, per study dose A9502

Technetium Tc-99m Tetrofosmin is a radiopharmaceutical used in diagnostic imaging. It helps highlight areas of concern in the heart by emitting signals captured by a special camera. This assists doctors in detecting heart conditions.

112 services56 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.

106 services106 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

101 services101 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

92 services92 patients

Heart muscle strain imaging 93356

70 services70 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

66 services50 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

60 services60 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

55 services55 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

41 services40 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

38 services38 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

30 services30 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional 93228

An Electrocardiogram (ECG) is a non-invasive test that records the electrical signals in your heart. For up to 30 days, a small device will continuously monitor your heart's activity. A healthcare professional will then review the data and provide a report on your heart's function.

22 services22 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.

22 services22 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.

18 services16 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.

18 services18 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

17 services17 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

17 services15 patients

Ultrasound of heart with probe in esophagus during surgery on heart or great blood vessels with report 93355

This procedure, known as a transesophageal echocardiogram, involves placing a probe in your esophagus to capture detailed images of your heart during surgery. It helps surgeons monitor heart function and guide treatment. A report will follow.

17 services17 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

16 services16 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

16 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Northside Hospital Forsyth

Acute Care Hospitals · Cumming, GA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110005

Location1200 Northside Forsyth DriveCumming, GA 30041 · Forsyth County

Birthing friendly

Northside Hospital Gwinnett

Acute Care Hospitals · Lawrenceville, GA

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110087

Location1000 Medical Center BoulevardLawrenceville, GA 30046 · Gwinnett County

Birthing friendly

Northside Hospital

Acute Care Hospitals · Atlanta, GA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110161

Location1000 Johnson Ferry Road, NEAtlanta, GA 30342 · Fulton County

Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30328 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

$130.64 typical visit price

range $56.84 – $172.43

Typical copayment $32.66 (range $14.21 – $43.10)

Most-billed visit code 99204

Established Patient

$70.85 typical visit price

range $18.22 – $140.40

Typical copayment $17.71 (range $4.55 – $35.10)

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.

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.

68.55/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

63.15

Promoting Interoperability

Improvement Activities

Cost

52.03

Other Providers at the Same Location NPPES

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

DAMARA P ALDRIDGE ACNP-C

Nurse Practitioner (Acute Care)

6135 BARFIELD RD STE 100
SANDY SPRINGS, GA 30328

Fulton County (404) 845-8200

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 Colin O'brien's NPI number?

The NPI number for Colin O'brien is 1245768886. It was assigned to this individual provider in the NPPES registry on May 26, 2017.

Where is Colin O'brien located?

Colin O'brien practices at 6135 Barfield Rd Ste 100, Sandy Springs, GA 30328. The listed phone number is (404) 962-6000.

What is Colin O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Colin O'brien enrolled in Medicare?

Yes. Colin 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 Colin O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Colin O'brien reassigns Medicare benefits to Northside Cardiovascular Professional Services, LLC (Roswell, GA). 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 Colin O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Colin O'brien accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list Colin 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 Colin O'brien affiliated with any hospitals?

According to CMS data, Colin O'brien is affiliated with Northside Hospital Forsyth, Northside Hospital Gwinnett and Northside Hospital.

When was this NPI record last updated?

The NPPES record for Colin O'brien was last updated on June 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.