GRAHAM MICHAEL CORMACK M.D.
NPI 1316058514
Internal Medicine in Pearl City, HI
About Graham Michael Cormack M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRAHAM MICHAEL CORMACK M.D. (NPI 1316058514) is an individual internal medicine provider in Pearl City, Hawaii, licensed in Hawaii (13938) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Wilcox Memorial Hospital, and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Graham Michael Cormack M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Graham Cormack reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 clinicians in this Medicare group
Honolulu, HI 96817
- Reassigned Medicare billing, Hawaii enrollment
- 16 clinicians in this Medicare group
Kealakekua, HI 96750
- Reassigned Medicare billing, Hawaii enrollment
- 65 clinicians in this Medicare group
Grand Forks, ND 58201
- Reassigned Medicare billing, North Dakota enrollment
- 701 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wilcox Memorial Hospital
Acute Care Hospitals · Lihue, HIStraub Clinic And Hospital
Acute Care Hospitals · Honolulu, HIPali Momi Medical Center
Acute Care Hospitals · Aiea, HIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96782 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Graham Cormack's NPI number?
The NPI number for Graham Cormack is 1316058514. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Graham Cormack located?
Graham Cormack practices at 1279 Waimano Home Rd, Pearl City, HI 96782. The listed phone number is (808) 454-2808.
What is Graham Cormack's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Graham Cormack enrolled in Medicare?
Yes. Graham Cormack is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Graham Cormack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Graham Cormack reassigns Medicare benefits to 4 organizations: Hawaii Permanente Medical Group Inc (Honolulu, HI), Aloha Critical Care Associates LLP (Honolulu, HI), Sound Physicians Of Hawaii Inc (Kealakekua, HI) and Altru Health System (Grand Forks, ND). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Graham Cormack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Graham Cormack affiliated with any hospitals?
According to CMS data, Graham Cormack is affiliated with Wilcox Memorial Hospital, Straub Clinic And Hospital and Pali Momi Medical Center.
When was this NPI record last updated?
The NPPES record for Graham Cormack was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.