Andrew R. Deemer, MD
Vascular Surgery Physician · Oceanside, CA
Andrew R. Deemer, MD is a vascular surgery physician with a practice address in Oceanside, California, and NPI 1578568432, issued on Jun 16, 2005. Check the license (California G66191, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew R. Deemer
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- G66191 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3998 Vista Way, Oceanside, CA 92056
- Phone
- (760) 724-5352
- Enumerated
- Jun 16, 2005
- Record last updated
- Nov 12, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (760) 724-5447
- Medicaid ID
- 00G661910 CA
- Medicare enrollment
- Enrolled (PECOS I20110225000593); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 580 in California → Look up another NPI →
Also registered at 3998 Vista Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael BonillaCounselor1265099295
- Kenneth Carr, M.D.Cardiovascular Disease Physician1245255439
- Adam Fierer, MDSurgery Physician1205831161
- Jean Folkerth, CRNFACertified Registered Nurse Anesthetist1881744928
- Todd Grehl, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1720054257
- Mohammad Jamshidi-Nezhad, DO F.A.C.S.Vascular Surgery Physician1891797023
Verify Andrew R. Deemer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66191Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average vascular surgery physician in 2024
176 Medicare Part D claims for 92 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. 86 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen72 claims
- Oxycodone-Acetaminophen13 claims
- Amoxicillin-Clavulanate Potass11 claims
- Cephalexin11 claims
- Clopidogrel11 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: $49.47
1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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.
Andrew R. Deemer among 580 vascular surgery physician records in California
Andrew R. Deemer, MD is one of 580 vascular surgery physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1984 · median 2003 among the 411 with a school on file
- Record last updated2013 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in California
There are 580 vascular surgery physician records in California.
All 580 in California → Every provider in Oceanside → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Mohammad Jamshidi-Nezhad, DO F.A.C.S.Oceanside, CA 920561891797023
- John Kroener, MDOceanside, CA 920561932104890
- Eileen Natuzzi, MDOceanside, CA 920561740285618
- Omar Al-Nouri, D.O.La Jolla, CA 920371770742264
- Joshua Fallentine, MDLa Jolla, CA 920371417651878
- Ann Gaffey, MDLa Jolla, CA 920371316232010
- Lily Johnston, MD MPHLa Jolla, CA 920371558627893
- Sarah Lucas, M.D.La Jolla, CA 920371952537326
Common questions
What is Andrew R. Deemer, MD's NPI number?
Andrew R. Deemer, MD's National Provider Identifier (NPI) is 1578568432, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Andrew R. Deemer, MD located?
The NPPES record lists a practice address at 3998 Vista Way, Oceanside, CA, 92056. Phone: (760) 724-5352. Providers update this record themselves, so call before visiting.
How can I verify Andrew R. Deemer, MD's license?
NPPES lists California license number G66191, 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 R. Deemer, MD prescribe under Medicare Part D?
In 2024, Andrew R. Deemer, MD had 176 Medicare Part D claims for 92 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.