Duane Ray Darnell, DO
Internal Medicine Physician · Sun City, CA
Duane Ray Darnell, DO is an internal medicine physician with a practice address in Sun City, California, and NPI 1831199728, issued on Jul 21, 2005. Check the license (California 20A4863, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duane Ray Darnell
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A4863 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27994 Bradley RD, Sun City, CA 92586
- Phone
- (951) 246-1366
- Enumerated
- Jul 21, 2005
- Record last updated
- Sep 18, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (951) 246-1466
- Entity
- Type 1 · individual
Also registered at 27994 Bradley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Lam, MDInternal Medicine Physician1003830191
- Erin McIntosh, NPFamily Nurse Practitioner1194440818
Verify Duane Ray Darnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A4863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,037 Medicare Part D claims for 290 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium158 claims
- Levothyroxine Sodium98 claims
- Losartan Potassium88 claims
- Gabapentin72 claims
- Pantoprazole Sodium67 claims
- Tamsulosin Hcl66 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: $61.31
3 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 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.
13 internal medicine physician records list a practice address in Sun City
They are 13 of the 137 NPPES records with a practice address in Sun City, and 17,696 internal medicine physician records in California.
All 13 in Sun City → All 17,696 in California → Every provider in Sun City →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Duane Ray Darnell, DO's NPI number?
Duane Ray Darnell, DO's National Provider Identifier (NPI) is 1831199728, issued on Jul 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Duane Ray Darnell, DO located?
The NPPES record lists a practice address at 27994 Bradley RD, Sun City, CA, 92586. Phone: (951) 246-1366. Providers update this record themselves, so call before visiting.
How can I verify Duane Ray Darnell, DO's license?
NPPES lists California license number 20A4863, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Duane Ray Darnell, DO prescribe under Medicare Part D?
In 2024, Duane Ray Darnell, DO had 2,037 Medicare Part D claims for 290 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.