Douglas Clark Ostman, M.D.
Emergency Medicine Physician · Honolulu, HI
Douglas Clark Ostman, M.D. is an emergency medicine physician with a practice address in Honolulu, Hawaii, and NPI 1023280559, issued on Mar 25, 2008. Check the license (Hawaii MD 2164, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Douglas Clark Ostman
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD 2164 HI
Self-reported in NPPES; status is on the state search - Practice location
- 3196 Diamond Head RD, Honolulu, HI 96815
- Phone
- (808) 923-9009
- Enumerated
- Mar 25, 2008
- Record last updated
- Mar 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 370 in Hawaii → Look up another NPI →
Verify Douglas Clark Ostman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD 2164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
18 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Douglas Clark Ostman among 370 emergency medicine physician records in Hawaii
Douglas Clark Ostman, M.D. is one of 370 emergency medicine physician records with a practice address in Hawaii. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 42% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2008 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
161 emergency medicine physician records list a practice address in Honolulu
They are 161 of the 12,408 NPPES records with a practice address in Honolulu, and 370 emergency medicine physician records in Hawaii.
All 370 in Hawaii → Every provider in Honolulu → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Lauren Rodriguez, MDHonolulu, HI 968151376972778
- Takashi Nakamura, MDHonolulu, HI 968141821381724
- Darnell Richey, M.D.Honolulu, HI 968141699014589
- Linda Rosen, M.D.Honolulu, HI 968161578890984
- Robert Ruggieri, M.D.Honolulu, HI 968161477502649
- Norbert Wong, M.D.Honolulu, HI 968161134175011
- Carolyn Annerud, MDHonolulu, HI 968171275586927
- Alana Behrens, MDHonolulu, HI 968131225611544
Common questions
What is Douglas Clark Ostman, M.D.'s NPI number?
Douglas Clark Ostman, M.D.'s National Provider Identifier (NPI) is 1023280559, issued on Mar 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Clark Ostman, M.D. located?
The NPPES record lists a practice address at 3196 Diamond Head RD, Honolulu, HI, 96815. Phone: (808) 923-9009. Providers update this record themselves, so call before visiting.
How can I verify Douglas Clark Ostman, M.D.'s license?
NPPES lists Hawaii license number MD 2164, 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 Douglas Clark Ostman, M.D. prescribe under Medicare Part D?
In 2024, Douglas Clark Ostman, M.D. had 18 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.