Kenneth Mark Riff, M.D.
Internal Medicine Physician · Kailua Kona, HI
Kenneth Mark Riff, M.D. is an internal medicine physician with a practice address in Kailua Kona, Hawaii, and NPI 1053765149, issued on Apr 15, 2016. Check the license (Hawaii 12450, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kenneth Mark Riff
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 12450 HI
32424 MN
Self-reported in NPPES; status is on the state search - Practice location
- 75-169 Hualalai RD Ste 301, Kailua Kona, HI 96740
- Phone
- (808) 329-2114
- Enumerated
- Apr 15, 2016
- Record last updated
- Apr 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190625003751); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1977
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 902 in Hawaii → Look up another NPI →
Also registered at 75-169 Hualalai RD Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Hughes, NDFamily Medicine Physician1700394160
- Landon Opunui, NDNaturopath1174952881
Verify Kenneth Mark Riff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license 12450Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
204 Medicare Part D claims for 48 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium17 claims
- Losartan Potassium12 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
- Five Mountains Hawaii, IncKamuela, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth Mark Riff among 902 internal medicine physician records in Hawaii
Kenneth Mark Riff, M.D. is one of 902 internal medicine physician records with a practice address in Hawaii. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1977 · median 2001 among the 491 with a school on file
- Record last updated2016 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 internal medicine physician records list a practice address in Kailua Kona
They are 11 of the 803 NPPES records with a practice address in Kailua Kona, and 902 internal medicine physician records in Hawaii.
All 902 in Hawaii → Every provider in Kailua Kona → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lisa Barville, MDKailua Kona, HI 967401841384393
- Dickran Boranian, M.D.Kailua Kona, HI 967401285631952
- Loi Chang-Stroman, MDKailua Kona, HI 967401780770529
- Carrie Colmenares, M.D.Kailua Kona, HI 967401013121060
- Frank Hurst, MDKailua Kona, HI 967401598864571
- David Kwiat, MDKailua Kona, HI 967401740338037
- Corinne Laurance, M.D.Kailua Kona, HI 967401952397374
- Joanne Lombardi, MDKailua Kona, HI 967401548314164
Common questions
What is Kenneth Mark Riff, M.D.'s NPI number?
Kenneth Mark Riff, M.D.'s National Provider Identifier (NPI) is 1053765149, issued on Apr 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Mark Riff, M.D. located?
The NPPES record lists a practice address at 75-169 Hualalai RD Ste 301, Kailua Kona, HI, 96740. Phone: (808) 329-2114. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Mark Riff, M.D.'s license?
NPPES lists Hawaii license number 12450, 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 Kenneth Mark Riff, M.D. prescribe under Medicare Part D?
In 2024, Kenneth Mark Riff, M.D. had 204 Medicare Part D claims for 48 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.