Gregory Calkins, M.D.
Emergency Medicine Physician · Kamuela, HI
Gregory Calkins, M.D. is an emergency medicine physician with a practice address in Kamuela, Hawaii, and NPI 1043291206, issued on Nov 7, 2005. Check the license (Hawaii MD-6251, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Calkins
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- MD-6251 HI
G200602 CA
01031005A IN
35-043792 OH
Self-reported in NPPES; status is on the state search - Practice location
- 65-1117 Ehiku PL, Kamuela, HI 96743
- Phone
- (513) 368-3602
- Enumerated
- Nov 7, 2005
- Entity
- Type 1 · individual
Verify Gregory Calkins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-6251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
82% fewer Medicare Part D claims than the average emergency medicine physician in 2024
64 Medicare Part D claims for 44 beneficiaries, against an average of 355 among the 49,029 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.
One hospital or facility affiliation
- Duerler IncKamuela, HI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Emergency Medicine Physician providers in Hawaii
There are 369 emergency medicine physician records in Hawaii.
Other emergency medicine physician records in Hawaii
- Hessam Afshari, MDHonolulu, HI1811217573
- Audrius Aglinskas, M.D.Kailua, HI1295833481
- Soo Hyun Ahn, MDAiea, HI1093398828
- Roderick Alfonso, M.D.Aiea, HI1417310293
- John Alm, MDMakawao, HI1225042369
- Jose Almeida, M.D.Waipahu, HI1326091224
- Allon Amitai, MDWaianae, HI1659325256
- Valorie Ammann, MDEwa Beach, HI1174574792
- Nathan Angle, MDHonolulu, HI1598899437
- Peter Angleton, M.D.Kula, HI1821042334
Common questions
What is Gregory Calkins, M.D.'s NPI number?
Gregory Calkins, M.D.'s National Provider Identifier (NPI) is 1043291206, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Calkins, M.D. located?
The NPPES record lists a practice address at 65-1117 Ehiku PL, Kamuela, HI, 96743. Phone: (513) 368-3602. Providers update this record themselves, so call before visiting.
How can I verify Gregory Calkins, M.D.'s license?
NPPES lists Hawaii license number MD-6251, 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 Gregory Calkins, M.D. prescribe under Medicare Part D?
In 2024, Gregory Calkins, M.D. had 64 Medicare Part D claims for 44 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.