Adam S. Fierer, MD
Surgery Physician · Oceanside, CA
Adam S. Fierer, MD is a surgery physician with a practice address in Oceanside, California, and NPI 1205831161, issued on Jun 16, 2005. Check the license (California G69685, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Adam S. Fierer
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G69685 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
- Mar 27, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (760) 724-5447
- Medicaid ID
- 00G696850 CA
- Medicare enrollment
- Enrolled (PECOS I20080609000270); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 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
- Andrew Deemer, MDVascular Surgery Physician1578568432
- 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 Adam S. Fierer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69685Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average surgery physician in 2024
123 Medicare Part D claims for 75 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 62 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen50 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: $22,765.22
29 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive 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
- Arch Health Partners IncPoway, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adam S. Fierer among 3,118 surgery physician records in California
Adam S. Fierer, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1989 · median 2003 among the 1,901 with a school on file
- Record last updated2017 · 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 Oceanside → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Kristen Nassery, MDOceanside, CA 920561396059440
- Hussna Wakily, MDOceanside, CA 920561811155765
- William Butler, M.D.Camp Pendleton, CA 920551265724553
- Cody Clapp, MDCamp Pendleton, CA 920551396301602
- Joseph DiazCamp Pendleton, CA 920551700387578
- Augustus Gleason, MDCamp Pendleton, CA 920551164957098
- John Hulse, MDOceanside, CA 920551093339632
- Greigory Kraus, MDCamp Pendleton, CA 920551730641010
Common questions
What is Adam S. Fierer, MD's NPI number?
Adam S. Fierer, MD's National Provider Identifier (NPI) is 1205831161, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Adam S. Fierer, 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 Adam S. Fierer, MD's license?
NPPES lists California license number G69685, 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 Adam S. Fierer, MD prescribe under Medicare Part D?
In 2024, Adam S. Fierer, MD had 123 Medicare Part D claims for 75 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.