Doctor profile · Federal record
Dr. Gregory O'Brien, D.P.T, CSCS
Physical Therapist (CMS: Physical Therapist in Private Practice) · Marion, IA
- NPI 1447663505
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
999 44Th St, Suite 10,000
Marion, IA 523023846
(319) 373-7311
fax (319) 373-7313
Credentials & registration
- NPI registered
- June 2014 — 12 yrs on file
- Profile last updated
- July 16, 2025
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 225100000X — NUCC code
- State license (1)
- Iowa #004514
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447663505. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,156
Distinct HCPCS
10
Medicare allowed
$93,920
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
97110 |
Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | 2,984 | 85 | $22 | |
97140 |
Therapy procedure using manual technique, each 15 minutes | 484 | 69 | $19 | |
G0283 |
Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care | 221 | 52 | $8 | |
97530 |
Therapy procedure using functional activities | 128 | 46 | $29 | |
97112 |
Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes | 96 | 17 | $28 | |
97035 |
Application of ultrasound, each 15 minutes | 89 | 37 | $10 | |
97164 |
Re-evaluation for physical therapy, typically 20 minutes | 51 | 35 | $62 | |
97161 |
Evaluation for physical therapy, typically 20 minutes | 38 | 35 | $95 | |
97116 |
Therapy procedure for walking training, each 15 minutes | 33 | 15 | $19 | |
97162 |
Evaluation for physical therapy, typically 30 minutes | 32 | 31 | $95 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 358. This provider delivers 12× the peer median.Frequently asked questions
What is Dr. Gregory O'Brien's medical specialty?
Dr. Gregory O'Brien practices Physical Therapist in Marion, IA.
Where does Dr. Gregory O'Brien practice?
Dr. Gregory O'Brien practices at 999 44Th St, Marion, IA 523023846. Office phone: 3193737311.
What is Dr. Gregory O'Brien's NPI?
Dr. Gregory O'Brien's National Provider Identifier (NPI) is 1447663505, issued by NPPES.
Does Dr. Gregory O'Brien accept Medicare assignment?
Yes. Dr. Gregory O'Brien accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory O'Brien commonly perform?
Top Medicare-reported procedures in 2023: Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility (HCPCS 97110); Therapy procedure using manual technique (HCPCS 97140); Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care (HCPCS G0283). Source: CMS Medicare Physician & Other Practitioners file.