Doctor profile · Federal record
Dr. John O'Brien, M.D.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Falls Church, VA
- NPI 1952392482
- Accepts Medicare
- 49 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3300 Gallows RD
Falls Church, VA 220423307
(703) 776-4001
fax (703) 776-7113 - Additional location
-
3299 Woodburn RD, Suite 200
Annandale, VA 220031275
(703) 573-0740
fax (703) 207-8561
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- January 5, 2022
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Virginia #0101036720
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1952392482. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,397
Distinct HCPCS
10
Medicare allowed
$191,914
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 1,059 | 935 | $9 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 749 | 670 | $17 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 526 | 447 | $144 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 272 | 269 | $76 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 223 | 220 | $74 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 98 | 88 | $201 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 90 | 90 | $187 | |
93308 |
Ultrasound of heart, follow-up | 76 | 74 | $27 | |
93321 |
Ultrasound of heart blood flow, valves and chambers, follow-up | 51 | 51 | $8 | |
93325 |
Ultrasound of heart with color-depicted blood flow, rate and valve function | 51 | 51 | $3 |
In context: peer comparison
Among 10 peers in Falls Church Cardiovascular Disease Physician, average services per provider: 129. This provider delivers 26× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,026
Patients
335
Total drug cost
$350,621
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 119 | 37 | $2,640 |
| Eliquis (Apixaban) | Brand | 102 | 35 | $151,022 |
| Atorvastatin Calcium | Generic | 87 | 30 | $1,079 |
| Diltiazem 24Hr ER (Cd) (Diltiazem Hcl) | Brand | 82 | 31 | $4,088 |
| Amlodipine Besylate | Generic | 81 | 27 | $860 |
| Losartan Potassium | Generic | 81 | 25 | $1,146 |
| Spironolactone | Generic | 75 | 23 | $719 |
| Carvedilol | Generic | 63 | 20 | $650 |
| Lisinopril | Generic | 63 | 17 | $589 |
| Furosemide | Generic | 57 | 23 | $485 |
Hospital affiliations
Frequently asked questions
What is Dr. John O'Brien's medical specialty?
Dr. John O'Brien practices Cardiovascular Disease Physician in Falls Church, VA.
Where does Dr. John O'Brien practice?
Dr. John O'Brien practices at 3300 Gallows RD, Falls Church, VA 220423307. Office phone: 7037764001.
What is Dr. John O'Brien's NPI?
Dr. John O'Brien's National Provider Identifier (NPI) is 1952392482, issued by NPPES.
Does Dr. John O'Brien accept Medicare assignment?
Yes. Dr. John O'Brien accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John O'Brien commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.