Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark T. Grattan, MD, LLC

Organization Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1043413040

Mark T. Grattan, MD, LLC is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Honolulu, Hawaii. Licensed in Hawaii. Registered with an NPI since 2007.

Licensed in
HI
In the registry since
2007
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

888 S King St
Honolulu, HI 96813-3009
Phone: (808) 522-3068
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence MD 7469 (HI)

Record details

NPI number1043413040
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Grattan — Sole Proprietor · (808) 522-3068
NPI enumeratedJune 7, 2007
Last updated in NPPESDecember 11, 2007
Mailing address820 Mililani St, Suite 702a, Honolulu, HI 96813-2924

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