David S. Merin, MD
Emergency Medicine Physician · Orange, CA
David S. Merin, MD is an emergency medicine physician with a practice address in Orange, California, and NPI 1811929979, issued on Jul 7, 2006. Check the license (California A66968, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David S. Merin
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A66968 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 W Stewart Dr, Orange, CA 92868
- Phone
- (714) 633-9111
- Enumerated
- Jul 7, 2006
- Record last updated
- Apr 30, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 00A669680 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1100 W Stewart Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Azita Alipour, PHARM.D.Psychiatric Pharmacist1982835401
- Allison Alix, WHNPWomen's Health Nurse Practitioner1396269403
- Roger Arakaki, M.D.Anesthesiology Physician1003836990
- Shadi Aramesh, MDPsychiatry Physician1326487091
Verify David S. Merin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average emergency medicine physician in 2024
127 Medicare Part D claims for 98 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 15 claims were for opioids.
Most prescribed
- Cephalexin24 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.
David S. Merin among 7,751 emergency medicine physician records in California
David S. Merin, MD 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2008 · 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).
179 emergency medicine physician records list a practice address in Orange
They are 179 of the 13,245 NPPES records with a practice address in Orange, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Orange → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michael Anderson, MDOrange, CA 928681093747750
- Rishi Bhargava, MDOrange, CA 928681407811623
- Jonathan Blair, MDOrange, CA 928681891727954
- Bharath Chakravarthy, MDOrange, CA 928681144259839
- Elizabeth Fiedler, MDOrange, CA 928681578594529
- Jeffrey Hughes, MDOrange, CA 928681871525949
- Michael Menchine, MDOrange, CA 928681912963612
- William Murphy, MDOrange, CA 928681215969449
Common questions
What is David S. Merin, MD's NPI number?
David S. Merin, MD's National Provider Identifier (NPI) is 1811929979, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David S. Merin, MD located?
The NPPES record lists a practice address at 1100 W Stewart Dr, Orange, CA, 92868. Phone: (714) 633-9111. Providers update this record themselves, so call before visiting.
How can I verify David S. Merin, MD's license?
NPPES lists California license number A66968, 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 David S. Merin, MD prescribe under Medicare Part D?
In 2024, David S. Merin, MD had 127 Medicare Part D claims for 98 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.