Jeffrey Feinfield, M.D.
NPI 1740372028 · Specialist · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Feinfield, M.D. is a Specialist provider in Thousand Oaks, CA (NPI 1740372028).
Provider details
- NPI number
- 1740372028
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A71991 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,210 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 445 | $98 |
| Removal of Impacted Ear Wax69210 | 168 | $50 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 164 | $210 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 141 | $119 |
| Exam of Ear Using a Microscope92504 | 67 | $33 |
| Biopsy Or Removal of Nasal Polyp Or Tissue Using an Endoscope31237 | 41 | $418 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 140 | 56 |
| Ipratropium Bromide | 121 | 47 |
| Methylprednisolone | 43 | 39 |
| Cefdinir | 40 | 33 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 30 | 21 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 23 |
| Alprazolam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$9,411 across 48 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2017-04-27
Frequently asked questions
- What is Jeffrey Feinfield's NPI number?
- Jeffrey Feinfield's National Provider Identifier (NPI) is 1740372028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Feinfield's specialty?
- Jeffrey Feinfield is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Jeffrey Feinfield located?
- Jeffrey Feinfield's practice location on file with NPPES is 555 Marin St, Thousand Oaks, CA 91360-4102.
- What is Jeffrey Feinfield's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Feinfield is (805) 494-4797.
- Does Jeffrey Feinfield accept Medicare?
- Jeffrey Feinfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Feinfield's NPI active?
- Yes — Jeffrey Feinfield's NPI (1740372028) is active in the NPPES registry as of the last update on 2017-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.