Provider Profile
Hannah O'Brien, PA-C
Unclaimed ProfileAt a glance
- 18 Spinnaker Pl, Redwood City, CA 94065
About Hannah O'brien
Hannah O'Brien, PA-C is a physician assistant based in Redwood City, CA. Hannah is a 2020 graduate of University of Southern California Keck School of Medicine. According to Medicare claims data, Hannah cared for 297 Medicare patients across 306 services. The services billed most often include emergency department visit with high level of medical decision making, emergency department visit with moderate level of medical decision making, and emergency department visit with low level of medical decision making. The provider's National Provider Identifier (NPI) is 1780216598.
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
- (925) 382-4824
- Email not available
Practice Locations
18 SPINNAKER PL
Redwood City, CA 94065
Procedures Most Often Billed to Medicare
306 services · 297 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
117 | More often than most peers in Physician Assistant |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
104 | More often than most peers in Physician Assistant |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
85 | More than most peers in Physician Assistant |
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 physician assistants in Redwood City 8
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 2020 at University of Southern California Keck School of Medicine 7
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Hannah O'Brien?
Hannah O'Brien is a physician assistant in Redwood City, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Hannah O'Brien's address?
Hannah O'Brien is listed at 18 Spinnaker Pl, Redwood City, CA 94065. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Hannah O'Brien?
The number on file is (925) 382-4824. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Hannah O'Brien's NPI number?
Hannah O'Brien's National Provider Identifier is 1780216598. 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
Where did Hannah O'Brien train?
Hannah O'Brien attended University of Southern California Keck School of Medicine, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Hannah O'Brien been practicing?
Hannah O'Brien has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What procedures does Hannah O'Brien perform?
According to Medicare billing data, Hannah O'Brien the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Hannah O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Hannah O'Brien. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.