Gabrielle A. O'Sullivan, MD
Family Medicine Physician · Wailuku, HI
Gabrielle A. O'Sullivan, MD is a family medicine physician with a practice address in Wailuku, Hawaii, and NPI 1295881332, issued on Jan 25, 2007. Check the license (Hawaii MD-18414, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gabrielle A. O'Sullivan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD-18414 HI
Self-reported in NPPES; status is on the state search - Practice location
- 1881 Nani Street, Wailuku, HI 96793
- Phone
- (808) 871-7772
- Enumerated
- Jan 25, 2007
- Record last updated
- Feb 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (808) 872-4036
- Medicaid ID
- 8370496 WA
- Medicare enrollment
- Enrolled (PECOS I20160808001722); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 730 in Hawaii → Look up another NPI →
Also registered at 1881 Nani Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Helen Barrow, LCSWClinical Social Worker1972066710
- Irving Brown, M.D.Legal Medicine1417990607
Verify Gabrielle A. O'Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-18414Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average family medicine physician in 2024
928 Medicare Part D claims for 121 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Amlodipine Besylate83 claims
- Atorvastatin Calcium62 claims
- Albuterol Sulfate Hfa41 claims
- Losartan Potassium33 claims
- Tamsulosin Hcl26 claims
- Metformin Hcl25 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Community Clinic OF Maui IncWailuku, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gabrielle A. O'Sullivan among 730 family medicine physician records in Hawaii
Gabrielle A. O'Sullivan, MD is one of 730 family medicine physician records with a practice address in Hawaii. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 47% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2000 · median 2006 among the 383 with a school on file
- Record last updated2019 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 family medicine physician records list a practice address in Wailuku
They are 25 of the 1,087 NPPES records with a practice address in Wailuku, and 730 family medicine physician records in Hawaii.
All 730 in Hawaii → Every provider in Wailuku → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Errol Buntuyan, MDWailuku, HI 967931316930548
- Megha Chandoke, M.D.Wailuku, HI 967931558551432
- Jason Egloff, M.D.Wailuku, HI 967931730389933
- Jay Faris, M.D.Wailuku, HI 967931770761355
- Kathleen Kearns, M.D.Wailuku, HI 967931265528673
- Gordon Labedz, MDWailuku, HI 967931437232311
- Bien Lazatin, MDWailuku, HI 967931174730667
- Benjamin Martinez, MDWailuku, HI 967931952482507
Common questions
What is Gabrielle A. O'Sullivan, MD's NPI number?
Gabrielle A. O'Sullivan, MD's National Provider Identifier (NPI) is 1295881332, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gabrielle A. O'Sullivan, MD located?
The NPPES record lists a practice address at 1881 Nani Street, Wailuku, HI, 96793. Phone: (808) 871-7772. Providers update this record themselves, so call before visiting.
How can I verify Gabrielle A. O'Sullivan, MD's license?
NPPES lists Hawaii license number MD-18414, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gabrielle A. O'Sullivan, MD prescribe under Medicare Part D?
In 2024, Gabrielle A. O'Sullivan, MD had 928 Medicare Part D claims for 121 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.