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JEFFREY FEINFIELD, M.D. INC
NPI 1013047455
Specialist in Thousand Oaks, CA

Active since March 06, 2007
415 ROLLING OAKS DR, SUITE 190, THOUSAND OAKS, CA 91361(805) 494-4797(805) 494-4810 Get Directions Write a Review

NPPES record last updated: June 21, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Jeffrey Feinfield, M.d. Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JEFFREY FEINFIELD, M.D. INC (NPI 1013047455) is a healthcare organization registered as a specialist in Thousand Oaks, California and active in the NPI registry since March 2007. The organization lists Jeffrey Kent Feinfield, Owner, as its authorized official.

NPPES Registry Identity

NPI1013047455
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameJEFFREY FEINFIELD, M.D. INC
Location Address415 ROLLING OAKS DR, SUITE 190Thousand Oaks, CA 91361-1029
Mailing Address415 Rolling Oaks Dr, Suite 190Thousand Oaks, CA 91361-1029 · (805) 494-4797 · Fax (805) 494-4810
Phone(805) 494-4797
Fax(805) 494-4810
Organization SubpartNo
Authorized OfficialJeffrey Kent FeinfieldOwner · (805) 494-4797
Enumeration DateMarch 6, 2007
Last NPPES UpdateJune 21, 2018
✔ NPI 1013047455 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
415 ROLLING OAKS DR, Thousand Oaks, CA 91361
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jeffrey Feinfield, M.d. Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by February 28, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20070808000255Non-DME Part B · Clinic/Group PracticeDue dateFebruary 28, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Jeffrey Feinfield, M.D. Inc, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Glenn Waldman, M.D.
Otolaryngology
NPI 1881665586
415 ROLLING OAKS DR SUITE 190
Thousand Oaks, CA 91361
(805) 494-4797
✔ PECOS✔ Accepts Medicare0.2 mi
Jeffrey Feinfield, M.D.
Otolaryngology
NPI 1740372028
555 MARIN ST STE 100
Thousand Oaks, CA 91360
(805) 494-4797
✔ PECOS✔ Accepts Medicare0.9 mi
Amanda Cotner, FNP-C
Nurse Practitioner
NPI 1467216333
2230 LYNN RD STE 200
Thousand Oaks, CA 91360
(805) 495-1066
✔ PECOS✔ Accepts Medicare2.5 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jeffrey Feinfield, M.D. Inc's NPI number?

The NPI number for Jeffrey Feinfield, M.D. Inc is 1013047455. It was assigned to this organization in the NPPES registry on March 6, 2007.

Where is Jeffrey Feinfield, M.D. Inc located?

Jeffrey Feinfield, M.D. Inc is located at 415 Rolling Oaks Dr Suite 190, Thousand Oaks, CA 91361. The listed phone number is (805) 494-4797.

What is Jeffrey Feinfield, M.D. Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Jeffrey Feinfield, M.D. Inc enrolled in Medicare?

Yes. Jeffrey Feinfield, M.D. Inc is registered in the Medicare PECOS enrollment system.

When is Jeffrey Feinfield, M.D. Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Jeffrey Feinfield, M.D. Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Jeffrey Feinfield, M.D. Inc, in Nurse Practitioner and Otolaryngology. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Jeffrey Feinfield, M.D. Inc was last updated on June 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.