Provider Profile
Ellen H. O'Halloran, P.A.-C
Unclaimed ProfileAbout Ellen O'halloran
Ellen H. O'Halloran, P.A.-C is a physician assistant based in Santa Cruz, CA. Medicare claims data shows Ellen provided 37 services to 30 patients. The services billed most often include emergency department visit with moderate level of medical decision making and emergency department visit with high level of medical decision making.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (408) 464-9619
- Email not available
Practice Locations
620B SUMNER ST
Santa Cruz, CA 95062
Procedures Most Often Billed to Medicare
37 services · 30 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
20 | Less often than most peers in Physician Assistant |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
17 | Less often 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.
Common questions
What does Ellen H. O'Halloran specialize in?
Ellen H. O'Halloran is a physician assistant in Santa Cruz, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Ellen H. O'Halloran located?
Ellen H. O'Halloran is listed at 620B Sumner St, Santa Cruz, CA 95062. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Ellen H. O'Halloran's phone number?
The number on file is (408) 464-9619. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Ellen H. O'Halloran?
Ellen H. O'Halloran's National Provider Identifier is 1346618071. 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
How much experience does Ellen H. O'Halloran have?
Ellen H. O'Halloran has 11+ years experience. Registered with an NPI since 2015. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Ellen H. O'Halloran do most often?
According to Medicare billing data, Ellen H. O'Halloran 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
Is Ellen H. O'Halloran's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Ellen H. O'Halloran. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.