Daan Ren, M.D.
Emergency Medicine Physician · Stockton, CA
Daan Ren, M.D. is an emergency medicine physician with a practice address in Stockton, California, and NPI 1851566004, issued on Apr 29, 2008. Check the license (California A105313, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daan Ren
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A105313 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2545 W Hammer LN, Stockton, CA 95209
- Phone
- (209) 957-7050
- Enumerated
- Apr 29, 2008
- Record last updated
- Apr 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101222000467); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2545 W Hammer LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Bethune, M.D.Sports Medicine (Orthopaedic Surgery) Physician1437156221
Verify Daan Ren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average emergency medicine physician in 2024
659 Medicare Part D claims for 356 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 44 claims were for opioids.
Most prescribed
- Ondansetron Odt90 claims
- Cephalexin50 claims
- Hydrocodone-Acetaminophen34 claims
- Meclizine Hcl25 claims
- Pantoprazole Sodium25 claims
- Azithromycin24 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): 81.1 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).
2 hospitals and group practices
- EM Alliance California ApcWildomar, CA
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Daan Ren among 7,751 emergency medicine physician records in California
Daan Ren, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1995 · median 2011 among the 4,560 with a school on file
- Record last updated2014 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Stockton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Sanjeev Bansal, M.D.Stockton, CA 952091174737225
- Lenley Jackson, M.D.Stockton, CA 952091568555845
- Saketh Akula, MDStockton, CA 952041417644493
- Micah Jelica Bondoc, MDStockton, CA 952041588368344
- Sarah Glenister, MDStockton, CA 952041770288938
- Matthew GolubjatnikovStockton, CA 952041245970722
- Joseph Hoffman, DOStockton, CA 952041033809512
- Bahare Kazemi, MDStockton, CA 952041033812334
Common questions
What is Daan Ren, M.D.'s NPI number?
Daan Ren, M.D.'s National Provider Identifier (NPI) is 1851566004, issued on Apr 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Daan Ren, M.D. located?
The NPPES record lists a practice address at 2545 W Hammer LN, Stockton, CA, 95209. Phone: (209) 957-7050. Providers update this record themselves, so call before visiting.
How can I verify Daan Ren, M.D.'s license?
NPPES lists California license number A105313, 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 Daan Ren, M.D. prescribe under Medicare Part D?
In 2024, Daan Ren, M.D. had 659 Medicare Part D claims for 356 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Daan Ren, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.1 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.