Andrew Richard De Mar, M.D.
Surgery Physician · Roseville, CA
Andrew Richard De Mar, M.D. is a surgery physician with a practice address in Roseville, California, and NPI 1891716023, issued on Jul 22, 2006. Check the license (California G58869, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Richard De Mar
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G58869 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Medical Plaza Dr, Roseville, CA 95661
- Phone
- (916) 797-7534
- Enumerated
- Jul 22, 2006
- Record last updated
- Apr 14, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (916) 797-4712
- Medicare enrollment
- Enrolled (PECOS I20060214000605); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 2 Medical Plaza Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Amaral, PAPhysician Assistant1922107424
- James Arellano, P.A.Surgical Physician Assistant1275541229
- Kristin Arreola, M.D.Hematology & Oncology Physician1518166677
- Tracy BacchusAudiologist1528239175
- Yona Barash, MDSurgery Physician1295859858
- John Jay Betz, MDOccupational Medicine Physician1538171681
Verify Andrew Richard De Mar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58869Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average surgery physician in 2024
44 Medicare Part D claims for 32 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen19 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.
Industry payments in 2024: $21.25
1 payment: food and beverage; the largest payer was Microline Surgical Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Trauma Medical Group OF Roseville IncRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Richard De Mar among 3,118 surgery physician records in California
Andrew Richard De Mar, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1985 · median 2003 among the 1,901 with a school on file
- Record last updated2009 · 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 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Roseville → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Philip Bosco, M.D.Roseville, CA 956611376566422
- Thomas Dugoni, MDRoseville, CA 956611427136118
- Samia Foster, MDRoseville, CA 956611285706093
- Rolf Gulbrandson, M.D.Roseville, CA 956611841270352
- Joshua Kehoe, MDRoseville, CA 956611619055100
- Alan McNabb, MDRoseville, CA 956611629173745
- Jeffrey Moore, MDRoseville, CA 956611700918455
- Thomas Polidore, MDRoseville, CA 956611366424095
Common questions
What is Andrew Richard De Mar, M.D.'s NPI number?
Andrew Richard De Mar, M.D.'s National Provider Identifier (NPI) is 1891716023, issued on Jul 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Richard De Mar, M.D. located?
The NPPES record lists a practice address at 2 Medical Plaza Dr, Roseville, CA, 95661. Phone: (916) 797-7534. Providers update this record themselves, so call before visiting.
How can I verify Andrew Richard De Mar, M.D.'s license?
NPPES lists California license number G58869, 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 Andrew Richard De Mar, M.D. prescribe under Medicare Part D?
In 2024, Andrew Richard De Mar, M.D. had 44 Medicare Part D claims for 32 beneficiaries; the average among surgery physician prescribers was 147. 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.