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Edit this profileAt a glance
- 1191 Church St, Ventura, CA 93001
About Dr. O'hollaren
Robert M. O'Hollaren, M.D. practices orthopaedic adult reconstructive surgery in Ventura, CA. Robert is a 1977 graduate of University of Southern California Keck School of Medicine. According to Medicare claims data, Robert cared for 332 Medicare patients across 603 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg, and aspiration and/or injection of fluid from large joint. The provider's National Provider Identifier (NPI) is 1801852710.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 320-6761
- Email not available
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Practice Locations
1191 CHURCH ST
Ventura, CA 93001
Procedures Most Often Billed to Medicare
603 services · 332 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
111 | As often as other peers in Orthopaedic Adult Reconstructive… |
| X-ray of knee, 4 or more views | Imaging | 73564 |
36 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
17 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| X-ray of lower and sacral spine, 2-3 views | Imaging | 72100 |
17 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| X-ray of hip, 2-3 views | Imaging | 73502 |
12 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| Mri scan of lower spinal canal without contrast | Imaging | 72148 |
12 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | Drug given | J0702 |
142 | As often as other peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
159 | As often as other peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
82 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
15 | Less often than most peers in Orthopaedic Adult Reconstructive… |
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.
Other orthopaedic adult reconstructive surgeons in Ventura 3
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1977 at University of Southern California Keck School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Robert M. O'Hollaren's specialty?
Robert M. O'Hollaren is an orthopaedic adult reconstructive surgeon in Ventura, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopaedic Adult Reconstructive Surgery”.
NPI registry
Where can I find Robert M. O'Hollaren?
Robert M. O'Hollaren is listed at 1191 Church St, Ventura, CA 93001. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Robert M. O'Hollaren?
The number on file is (805) 320-6761. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Robert M. O'Hollaren's NPI number?
Robert M. O'Hollaren's National Provider Identifier is 1801852710. 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 Robert M. O'Hollaren's education?
Robert M. O'Hollaren attended University of Southern California Keck School of Medicine, graduating in 1977. This comes from the CMS National Downloadable File.
CMS public data
How long has Robert M. O'Hollaren been practicing?
Robert M. O'Hollaren has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.
CMS public data
What is Robert M. O'Hollaren known for?
According to Medicare billing data, Robert M. O'Hollaren performs procedures including aspiration and/or injection of fluid from large joint; reads or performs imaging such as x-ray of knee, 4 or more views and x-ray of shoulder, minimum of 2 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Robert M. O'Hollaren confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Robert M. O'Hollaren. If this is you, claiming it is free.
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