Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Patrick Francis Sheehy and Arlene Gwon Mds Inc

Organization Hematology & Oncology Physician · NPI 1811903172

Patrick Francis Sheehy and Arlene Gwon Mds Inc is a Hematology & Oncology Physician in Newport Beach, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1401 Avocado #903
Newport Beach, CA 92660-7771
Phone: (949) 640-8620
Fax: (949) 640-6660
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G22586 (CA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence A25277 (CA)

Record details

NPI number1811903172
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Patrick Sheehy — President · (949) 640-8620
NPI enumeratedJuly 31, 2006
Last updated in NPPESSeptember 11, 2025
Mailing address1401 Avocado, 903, Newport Beach, CA 92660-7771

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