Physician Profile
Unclaimed ProfileAbout O'BRIEN
John T O'Brien, M.D. practises cardiovascular disease (cardiology) in Falls Church, VA. John is a 1977 graduate of Georgetown University School of Medicine. John is also listed as specialising in cardiovascular disease.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. O'Brien's specialty?
Dr. O'Brien is a cardiovascular disease (cardiology) in Falls Church, VA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CARDIOVASCULAR DISEASE (CARDIOLOGY)”.
NPI registry
Where can I find Dr. O'Brien?
Dr. O'Brien is listed at 3300 GALLOWS RD, Falls Church, VA 22042. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. O'Brien?
The number on file is (703) 776-4001. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. O'Brien's NPI number?
Dr. O'Brien's National Provider Identifier is 1952392482. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. O'Brien's medical education?
Dr. O'Brien attended Georgetown University School of Medicine, graduating in 1977. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. O'Brien been practising?
Dr. O'Brien has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.
CMS public data
What is Dr. O'Brien known for?
According to Medicare billing data, Dr. O'Brien provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Brien. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (703) 776-4001
- Email not available
Practice Locations
3300 GALLOWS RD
Falls Church, VA 22042
Procedures Most Often Billed to Medicare
3,188 services · 2,798 patients · 18 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
1,250 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
494 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
241 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
231 |
| Ultrasound of heart, follow-up | Treatment | 93308 |
86 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
39 |
| Ultrasound of heart blood flow, valves and chambers, follow-up | Treatment | 93321 |
39 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | Treatment | 93015 |
39 |
| Heart rhythm recording of continous external ekg over 8-15 days | Treatment | 93246 |
12 |
| Heart muscle strain imaging | Treatment | 93356 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other cardiovascular diseases in Falls Church 8
Same specialty, same city.
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1977 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in VA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.