Physician Profile
Katrina C. O'Halloran, MD
Unclaimed ProfileAbout Dr. O'halloran
Katrina C. O'Halloran, MD is a healthcare provider in Los Angeles, CA specializing in pediatric hematology-oncology. Katrina is also listed as specializing in student in an organized health care education program. This provider record is associated with NPI 1538546528.
Factual summary compiled by Guide.md from public records; not written by this provider.
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
- (323) 361-2121
- Email not available
Practice Locations
4650 W SUNSET BLVD # 54
Los Angeles, CA 90027
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 pediatric hematology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Dr. O'Halloran?
Dr. O'Halloran is a pediatric hematology in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatric Hematology-Oncology”.
NPI registry
What is Dr. O'Halloran's address?
Dr. O'Halloran is listed at 4650 W Sunset Blvd # 54, Los Angeles, CA 90027. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. O'Halloran?
The number on file is (323) 361-2121. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. O'Halloran's NPI number?
Dr. O'Halloran's National Provider Identifier is 1538546528. 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 long has Dr. O'Halloran been practicing?
Dr. 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
Has Dr. O'Halloran confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Halloran. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.