DR. JOHN LEON BOSSIAN II DO
NPI 1881651271
Family Medicine in Pearl Harbor, HI
About Dr. John Leon Bossian Ii Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN LEON BOSSIAN II DO (NPI 1881651271) is an individual family medicine provider in Pearl Harbor, Hawaii, licensed in Hawaii (DO1419) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Adventist Health Castle, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Group Practice 1
Accepted Insurance
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
Dr. John Leon Bossian Ii Do 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 Reassignment
Medicare enrollment records show John Bossian 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.
Areas of Expertise CMS Part B claims 6
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Adventist Health Castle
Acute Care Hospitals · Kailua, HIStraub Clinic And Hospital
Acute Care Hospitals · Honolulu, HIPali Momi Medical Center
Acute Care Hospitals · Aiea, HIKapiolani Medical Center For Women & Children
Childrens · Honolulu, HIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 96734 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 John Bossian's NPI number?
The NPI number for John Bossian is 1881651271. It was assigned to this individual provider in the NPPES registry on April 28, 2006.
Where is John Bossian located?
John Bossian practices at 15th Mdos Jbph Circle Road, Pearl Harbor, HI 96734. The listed phone number is (808) 448-6100.
What is John Bossian's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is John Bossian enrolled in Medicare?
Yes. John Bossian 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 organization bills Medicare for John Bossian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Bossian 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 John Bossian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Bossian accept?
Health plans from HMSA list John Bossian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Bossian affiliated with any hospitals?
According to CMS data, John Bossian is affiliated with Adventist Health Castle, Straub Clinic And Hospital, Pali Momi Medical Center and Kapiolani Medical Center For Women & Children.
When was this NPI record last updated?
The NPPES record for John Bossian was last updated on July 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. John Leon Bossian II, DO · NPI 1881651271
Family Medicine physician in Pearl Harbor, Hawaii. Individual provider, active in the CMS NPPES registry since April 28, 2006.
## Identity
- **NPI:** 1881651271 (Entity type: Individual)
- **Enumerated:** April 28, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** DO1419 (Hawaii)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 15TH MDOS JBPH, CIRCLE ROAD, Pearl Harbor, HI 96734
- **Phone:** (808) 448-6100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Straub Clinic & Hospital (NPI 1457306508, Honolulu, HI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Des Moines University Of Osteopathic Medicine And Health Sciences, class of 1983
## Record status
- **NPPES last updated:** July 17, 2018
- **Other identifiers:** Medicaid 5820708 (RI); Other MS46923 (RI); Medicaid JB35286 (RI)
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Source: [NPI Profile](https://npiprofile.com/npi/1881651271) · Data from the CMS NPPES public registry.