Gerard Demers, D.O.
Emergency Medicine Physician · San Diego, CA
Gerard Demers, D.O. is an emergency medicine physician with a practice address in San Diego, California, and NPI 1487626032, issued on Feb 6, 2006. Check the license (California 20A11662, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerard Demers
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 20A11662 CA
02002377A IN
Self-reported in NPPES; status is on the state search - Practice location
- 34800 Bob Wilson Dr, San Diego, CA 92134
- Phone
- (619) 532-8276
- Enumerated
- Feb 6, 2006
- Record last updated
- Jan 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110915000701); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 1998
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 34800 Bob Wilson Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Caleb Adkins, DOGeneral Practice Physician1689430860
- Kyle Adkins, PHARMDPharmacist1477740884
- Phillip Adriano, M.D.Emergency Medicine Physician1568576585
Verify Gerard Demers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average emergency medicine physician in 2024
102 Medicare Part D claims for 88 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate22 claims
- Prednisone12 claims
- Cephalexin11 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): 73.6 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).
Industry payments in 2024: $16.32
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 12,335 providers of this specialty with any payment received $953.79 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 3 group practices
- Ihc Beaver Dam Emergency Physicians, LLCBeaver Dam, WI
- Providence Medical FoundationEureka, CA
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerard Demers among 7,751 emergency medicine physician records in California
Gerard Demers, D.O. 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 fileYes · 59% of these records are
- Graduated1998 · median 2011 among the 4,560 with a school on file
- Record last updated2020 · 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 San Diego → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jonathan Auten, D.O.San Diego, CA 921341134190259
- Robert Buckley, MDSan Diego, CA 921341194796417
- David Durkovich, D.O.San Diego, CA 921341932179199
- Adam Field, MDSan Diego, CA 921341780649848
- Miguel Gutierrez, M.D.San Diego, CA 921341265402648
- Eric Herbert, MDSan Diego, CA 921341497727598
- Nicole Hurst, MDSan Diego, CA 921341174502785
- Kerry King, MDSan Diego, CA 921341922060565
Common questions
What is Gerard Demers, D.O.'s NPI number?
Gerard Demers, D.O.'s National Provider Identifier (NPI) is 1487626032, issued on Feb 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerard Demers, D.O. located?
The NPPES record lists a practice address at 34800 Bob Wilson Dr, San Diego, CA, 92134. Phone: (619) 532-8276. Providers update this record themselves, so call before visiting.
How can I verify Gerard Demers, D.O.'s license?
NPPES lists California license number 20A11662, 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 Gerard Demers, D.O. prescribe under Medicare Part D?
In 2024, Gerard Demers, D.O. had 102 Medicare Part D claims for 88 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Gerard Demers, D.O.'s MIPS final score?
The 2023 MIPS final score is 73.6 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.