Brent Jacob Geffen, MD
Otolaryngology Physician · Simi Valley, CA
Brent Jacob Geffen, MD is an otolaryngology physician with a practice address in Simi Valley, California, and NPI 1528562527, issued on Mar 22, 2018. Check the license (California 185833, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brent Jacob Geffen
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License numbers
- 185833 CA
11393298-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 2876 Sycamore Dr, Simi Valley, CA 93065
- Phone
- (805) 379-9646
- Enumerated
- Mar 22, 2018
- Record last updated
- May 30, 2023
- Medicare enrollment
- Enrolled (PECOS I20230721003318); accepts Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 2876 Sycamore Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- George Dichter, M.D.Internal Medicine Physician1841265261
Verify Brent Jacob Geffen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 185833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average otolaryngology physician in 2024
583 Medicare Part D claims for 270 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 24 claims were for opioids.
Most prescribed
- Famotidine69 claims
- Fluticasone Propionate69 claims
- Pantoprazole Sodium60 claims
- Ipratropium Bromide49 claims
- Fluocinolone Acetonide Oil33 claims
- Amoxicillin-Clavulanate Potass31 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): 85.4 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: $1,582.59
19 payments; by number, the most common kind was food and beverage; the largest payer was Med-EL Corporation. The 6,429 providers of this specialty with any payment received $1,922.50 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 2 group practices
- Bass Medical GroupVentura, CA
- West Coast Ear, Nose And ThroatSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brent Jacob Geffen among 1,212 otolaryngology physician records in California
Brent Jacob Geffen, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 89% of them.
- NPI issued2018 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2018 · median 2004 among the 818 with a school on file
- Record last updated2023 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Simi Valley → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Mark Kayne, M.D.Simi Valley, CA 930651306111695
- Martin Wareham, M.D.Simi Valley, CA 930651912914359
- Elisabeth Barbosa, M.D.Oxnard, CA 930361972600260
- Saranya Reghunathan, M.D.Oxnard, CA 930361811252968
- Stephen Chan, M.D.Oxnard, CA 930301568994010
- Nicholas Fettman, MDOxnard, CA 930301003005109
- Joseph Lee, M.D.Oxnard, CA 930301417912775
- Stephanie Culver, M.D.Santa Barbara, CA 931011184985582
Common questions
What is Brent Jacob Geffen, MD's NPI number?
Brent Jacob Geffen, MD's National Provider Identifier (NPI) is 1528562527, issued on Mar 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Brent Jacob Geffen, MD located?
The NPPES record lists a practice address at 2876 Sycamore Dr, Simi Valley, CA, 93065. Phone: (805) 379-9646. Providers update this record themselves, so call before visiting.
How can I verify Brent Jacob Geffen, MD's license?
NPPES lists California license number 185833, 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 Brent Jacob Geffen, MD prescribe under Medicare Part D?
In 2024, Brent Jacob Geffen, MD had 583 Medicare Part D claims for 270 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Brent Jacob Geffen, MD's MIPS final score?
The 2023 MIPS final score is 85.4 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.