Nash Allen Kawela Witten, M.D.
Family Medicine Physician · Haleiwa, HI
Nash Allen Kawela Witten, M.D. is a family medicine physician with a practice address in Haleiwa, Hawaii, and NPI 1790211431, issued on May 1, 2017. Check the license (Hawaii MD-20991, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nash Allen Kawela Witten
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD-20991 HI
Self-reported in NPPES; status is on the state search - Practice location
- 66-125 Kamehameha Hwy, Haleiwa, HI 96712
- Phone
- (808) 637-5087
- Enumerated
- May 1, 2017
- Record last updated
- Feb 7, 2026
- Fax
- (808) 637-4765
- Medicare enrollment
- Enrolled (PECOS I20200529000982); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 730 in Hawaii → Look up another NPI →
Also registered at 66-125 Kamehameha Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vanessa Agsalda-Rosenbush, M.D.Family Medicine Physician1376613158
- Masahisa Amano, M.D.Family Medicine Physician1881905388
- Kristopher Bjornson, M.D.Psychiatry Physician1891809109
- Samantha Duhaylonsod, APRNFamily Nurse Practitioner1154104594
- Todd Okazaki, D.D.SGeneral Practice Dentistry1740288695
- Aaron Suzuka, MDFamily Medicine Physician1477015634
Verify Nash Allen Kawela Witten in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-20991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average family medicine physician in 2024
5,470 Medicare Part D claims for 342 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium598 claims
- Lisinopril205 claims
- Amlodipine Besylate198 claims
- Losartan Potassium195 claims
- Albuterol Sulfate Hfa191 claims
- Metoprolol Succinate189 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.
Industry payments in 2024: $21.26
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Queens University Medical GroupHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nash Allen Kawela Witten among 730 family medicine physician records in Hawaii
Nash Allen Kawela Witten, M.D. 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2006 among the 383 with a school on file
- Record last updated2026 · 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).
9 family medicine physician records list a practice address in Haleiwa
They are 9 of the 133 NPPES records with a practice address in Haleiwa, and 730 family medicine physician records in Hawaii.
All 730 in Hawaii → Every provider in Haleiwa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vanessa Agsalda-Rosenbush, M.D.Haleiwa, HI 967121376613158
- Masahisa Amano, M.D.Haleiwa, HI 967121881905388
- Leland Dao, D.O.Haleiwa, HI 967121346307097
- Thornton Dilcher, M.D.Haleiwa, HI 967121891895629
- Adrian Izweriw, DNP, APRN-RXHaleiwa, HI 967121144992710
- Randall Suzuka, M.D.Haleiwa, HI 967121053483099
- Aaron Suzuka, MDHaleiwa, HI 967121477015634
- Summer Teruya, M.D.Haleiwa, HI 967121578679668
Common questions
What is Nash Allen Kawela Witten, M.D.'s NPI number?
Nash Allen Kawela Witten, M.D.'s National Provider Identifier (NPI) is 1790211431, issued on May 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nash Allen Kawela Witten, M.D. located?
The NPPES record lists a practice address at 66-125 Kamehameha Hwy, Haleiwa, HI, 96712. Phone: (808) 637-5087. Providers update this record themselves, so call before visiting.
How can I verify Nash Allen Kawela Witten, M.D.'s license?
NPPES lists Hawaii license number MD-20991, 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 Nash Allen Kawela Witten, M.D. prescribe under Medicare Part D?
In 2024, Nash Allen Kawela Witten, M.D. had 5,470 Medicare Part D claims for 342 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.