David N. Main, MD
Emergency Medicine Physician · Loma Linda, CA
David N. Main, MD is an emergency medicine physician with a practice address in Loma Linda, California, and NPI 1700076486, issued on Jul 27, 2007. Check the license (California A100956, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David N. Main
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A100956 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson St, Loma Linda, CA 92354
- Phone
- (909) 558-8131
- Enumerated
- Jul 27, 2007
- Record last updated
- Jul 27, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090701000174); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 11234 Anderson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David N. Main in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A100956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average emergency medicine physician in 2024
356 Medicare Part D claims for 238 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 36 claims were for opioids.
Most prescribed
- Cephalexin41 claims
- Cyclobenzaprine Hcl34 claims
- Oxycodone-Acetaminophen26 claims
- Sulfamethoxazole-Trimethoprim24 claims
- Prednisone17 claims
- Doxycycline Hyclate16 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): 94.6 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).
Bills Medicare through one group practice
- Cep America - CaliforniaSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David N. Main among 7,751 emergency medicine physician records in California
David N. Main, 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 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2006 · median 2011 among the 4,560 with a school on file
- Record last updated2007 · 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).
168 emergency medicine physician records list a practice address in Loma Linda
They are 168 of the 4,863 NPPES records with a practice address in Loma Linda, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Loma Linda → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Bassler, M.D.Loma Linda, CA 923541184675902
- Lance Brown, M.D.Loma Linda, CA 923541376562793
- Deepak Chandwani, M.D.Loma Linda, CA 923541144264177
- Tony Chow, M.D.Loma Linda, CA 923541154340578
- Lynda Daniel-Underwood, M.D.Loma Linda, CA 923541063447241
- Jeff Grange, M.D.Loma Linda, CA 923541801815238
- Steven Green, M.D.Loma Linda, CA 923541619996048
- Gregory Guldner, M.D.Loma Linda, CA 923541932125523
Common questions
What is David N. Main, MD's NPI number?
David N. Main, MD's National Provider Identifier (NPI) is 1700076486, issued on Jul 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David N. Main, MD located?
The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-8131. Providers update this record themselves, so call before visiting.
How can I verify David N. Main, MD's license?
NPPES lists California license number A100956, 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 N. Main, MD prescribe under Medicare Part D?
In 2024, David N. Main, MD had 356 Medicare Part D claims for 238 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is David N. Main, MD's MIPS final score?
The 2023 MIPS final score is 94.6 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.