Physician Profile
Jeffrey K. Feinfield, M.D.
Unclaimed ProfileAbout Dr. Feinfield
Jeffrey K. Feinfield, M.D. is a specialist practicing in Thousand Oaks, CA. Jeffrey trained at University of Southern California Keck School of Medicine, graduating in 1998. According to Medicare claims data, Jeffrey cared for 877 Medicare patients across 1,210 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, removal of impacted ear wax, and diagnostic exam of nasal passages using an endoscope.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 494-4797
- Email not available
Practice Locations
555 MARIN ST STE 100
Thousand Oaks, CA 91360
Procedures Most Often Billed to Medicare
1,210 services · 877 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
168 | More often than most peers in Specialist |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
164 | More often than most peers in Specialist |
| Biopsy or removal of nasal polyp or tissue using an endoscope | Procedure | 31237 |
41 | As often as other peers in Specialist |
| Dilation of nasal sinus using an endoscope | Procedure | 31295 |
25 | As often as other peers in Specialist |
| Dilation of sphenoid and frontal nasal sinus using an endoscope | Procedure | 31298 |
24 | Too few peers to compare |
| Removal of nasal air passage under lining tissue | Procedure | 30140 |
22 | Too few peers to compare |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
17 | Less often than most peers in Specialist |
| Removal or destruction of growth of nose through nose | Procedure | 30117 |
16 | Too few peers to compare |
| Repair of collapsed nasal valve | Procedure | 30469 |
14 | Too few peers to compare |
| Exam to assess movement of vocal cord flaps using an endoscope | Procedure | 31579 |
13 | Less often than most peers in Specialist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other specialists in Thousand Oaks 8
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 14 related providers in 2 groups
Class of 1998 at University of Southern California Keck School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Jeffrey K. Feinfield specialize in?
Jeffrey K. Feinfield is a specialist in Thousand Oaks, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Jeffrey K. Feinfield located?
Jeffrey K. Feinfield is listed at 555 Marin St Ste 100, Thousand Oaks, CA 91360. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Jeffrey K. Feinfield's phone number?
The number on file is (805) 494-4797. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Jeffrey K. Feinfield's NPI number?
Jeffrey K. Feinfield's National Provider Identifier is 1740372028. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Jeffrey K. Feinfield train?
Jeffrey K. Feinfield attended University of Southern California Keck School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Jeffrey K. Feinfield been practicing?
Jeffrey K. Feinfield has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What does Jeffrey K. Feinfield do most often?
According to Medicare billing data, Jeffrey K. Feinfield performs procedures including removal of impacted ear wax, diagnostic exam of nasal passages using an endoscope and biopsy or removal of nasal polyp or tissue using an endoscope; reads or performs imaging such as ct scan of face without contrast; provides treatments such as exam of ear using a microscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Jeffrey K. Feinfield confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Jeffrey K. Feinfield. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.