DR. JAY L. GREKIN M.D.
NPI 1013006659
Dermatology in Honolulu, HI
About Dr. Jay L. Grekin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAY L. GREKIN M.D. (NPI 1013006659) is an individual dermatology provider in Honolulu, Hawaii, licensed in Hawaii (MD-3643) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Jay L. Grekin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Jay Grekin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Honolulu, HI 96813
- Reassigned Medicare billing, Hawaii enrollment
- 664 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96813 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HONOLULU, HI 96813
HONOLULU, HI 96813
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 Jay Grekin's NPI number?
The NPI number for Jay Grekin is 1013006659. It was assigned to this individual provider in the NPPES registry on October 12, 2006.
Where is Jay Grekin located?
Jay Grekin practices at 888 S King St, Honolulu, HI 96813. The listed phone number is (808) 522-4360.
What is Jay Grekin's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Jay Grekin enrolled in Medicare?
Yes. Jay Grekin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Jay Grekin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jay Grekin reassigns Medicare benefits to Straub Clinic & Hospital (Honolulu, HI). The 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 Jay Grekin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Jay Grekin was last updated on September 14, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.