T Allan Darnell, M.D.
Public Health & General Preventive Medicine Physician · Loma Linda, CA
T Allan Darnell, M.D. is a public health & general preventive medicine physician with a practice address in Loma Linda, California, and NPI 1073695367, issued on Oct 19, 2006. Check the license (California A61846, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- T Allan Darnell
- Credential
- M.D.
- Primary taxonomy
- Public Health & General Preventive Medicine Physician 2083P0901X
- License number
- A61846 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25455 Barton RD, Loma Linda, CA 92354
- Phone
- (909) 558-6222
- Enumerated
- Oct 19, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040917000210); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest public health & general preventive medicine physician records → All 325 in California → Look up another NPI →
Also registered at 25455 Barton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dawn Banks, P.A.Physician Assistant1699705574
- Ahmed Bata, MDOrthopaedic Surgery Physician1184864423
- Gary Botimer, MDOrthopaedic Surgery Physician1124018114
- Emerald Caruso, M.D.Obstetrics & Gynecology Physician1811015209
- Zachary Cash, P.A.Physician Assistant1275717316
- Jian Chen, M.D.Family Medicine Physician1841633617
Verify T Allan Darnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average public health & general preventive medicine physician in 2024
543 Medicare Part D claims for 140 beneficiaries, against an average of 820 among the 336 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Ozempic34 claims
- Atovaquone-Proguanil Hcl30 claims
- Atorvastatin Calcium24 claims
- Levothyroxine Sodium22 claims
- Losartan Potassium21 claims
- Azithromycin17 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $19.19
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 181 providers of this specialty with any payment received $3,513.55 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
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
T Allan Darnell among 325 public health & general preventive medicine physician records in California
T Allan Darnell, M.D. is one of 325 public health & general preventive medicine physician records with a practice address in California. 27% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 79% newer
- In a Medicare fileYes · 27% of these records are
- In the CMS Doctors and Clinicians fileYes · 13% of these records are
- Graduated1995 · median 2008 among the 42 with a school on file
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083P0901X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Public Health & General Preventive Medicine Physician providers in California
There are 325 public health & general preventive medicine physician records in California.
All 325 in California → Every provider in Loma Linda → Public Health & General Preventive Medicine Physician nationwide →
The 8 public health & general preventive medicine physician records with the nearest ZIP codes
- Maryam Sanjari, M.D.Loma Linda, CA 923541760740427
- Karen Studer, M.D.Loma Linda, CA 923541003133786
- Linda Ferry, MD, MPHLoma Linda, CA 923571699866368
- Ryan Nelson, MD, MPH, DIPABPMLoma Linda, CA 923571730702630
- Peter Bastian, MDLoma Linda, CA 923501710299821
- Silvia Caswell, DOLoma Linda, CA 923501114585148
- Rebecca Chung, M.D.Loma Linda, CA 923501073875753
- Tonya Cramer, M.D., MPHLoma Linda, CA 923501083972350
Common questions
What is T Allan Darnell, M.D.'s NPI number?
T Allan Darnell, M.D.'s National Provider Identifier (NPI) is 1073695367, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is T Allan Darnell, M.D. located?
The NPPES record lists a practice address at 25455 Barton RD, Loma Linda, CA, 92354. Phone: (909) 558-6222. Providers update this record themselves, so call before visiting.
How can I verify T Allan Darnell, M.D.'s license?
NPPES lists California license number A61846, 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 T Allan Darnell, M.D. prescribe under Medicare Part D?
In 2024, T Allan Darnell, M.D. had 543 Medicare Part D claims for 140 beneficiaries; the average among public health & general preventive medicine physician prescribers was 820. Part D covers Medicare prescriptions only.
What is T Allan Darnell, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.