DR. WALTER R O'BRIEN (M.D.) – Sports Medicine (Family Medicine) Physician, NPI 1346290814
Sports Medicine (Family Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. WALTER R O'BRIEN (M.D.)
Wilshire Boulevard, Financial District, Downtown, Los Angeles, Los Angeles County, California, 90025, United States
LOS ANGELES, CA 900251503
Phone: (310) 477-7276
Fax: (310) 477-5148
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-01-29
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100129000105 | I | Orthopedic Surgery | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 90025)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ORTHOPEDIC SURGERY | CA | 73630 | X-ray of foot, minimum of 3 views | 20 | 14 |
| ORTHOPEDIC SURGERY | CA | 97001 | Physical therapy evaluation | 128 | 120 |
| ORTHOPEDIC SURGERY | CA | 97110 | Therapeutic exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | 747 | 54 |
| ORTHOPEDIC SURGERY | CA | 97140 | Manual (physical) therapy techniques to 1 or more regions, each 15 minutes | 5447 | 144 |
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