Gregory O'Brien, D.P.T, CSCS
NPI 1447663505 · Physical Therapist · Marion, IA
Enrolled with Medicare as Practitioner - Physical Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory O'Brien, D.P.T, CSCS is a Physical Therapist provider in Marion, IA (NPI 1447663505).
Provider details
- NPI number
- 1447663505
- Entity type
- Individual
- Primary specialty
- Physical TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- D.P.T, CSCS
- Sex
- Male
- Sole proprietor
- No
- License
- 004514 (IA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,857 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 2,326 | $22 |
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 232 | $18 |
| Application of Ultrasound, Each 15 Minutes97035 | 92 | $9 |
| Electrical Stimulation (unattended), to One Or More Areas for Indication(s) Other Than Wound Care, As Part of a Therapy Plan of CareG0283 | 88 | $8 |
| Evaluation for Physical Therapy, Typically 20 Minutes97161 | 35 | $94 |
| Re-Evaluation for Physical Therapy, Typically 20 Minutes97164 | 29 | $65 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-06
- Last updated
- 2025-07-16
- Certified
- 2025-07-16
Frequently asked questions
- What is Gregory O'Brien's NPI number?
- Gregory O'Brien's National Provider Identifier (NPI) is 1447663505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory O'Brien's specialty?
- Gregory O'Brien is listed in the NPPES registry with a primary specialty of Physical Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Gregory O'Brien located?
- Gregory O'Brien's practice location on file with NPPES is 999 44th St, Marion, IA 52302-3846.
- What is Gregory O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Gregory O'Brien is (319) 373-7311.
- Does Gregory O'Brien accept Medicare?
- Gregory O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory O'Brien's NPI active?
- Yes — Gregory O'Brien's NPI (1447663505) is active in the NPPES registry as of the last update on 2025-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.