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MARK KASOW M.D.
NPI 1619946266
Family Medicine in Thousand Oaks, CA

Active since March 16, 2006PECOS Enrolled
620 E JANSS RD, THOUSAND OAKS, CA 91360(805) 495-6866 Get Directions Write a Review

NPPES record last updated: March 29, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mark Kasow M.d. NPPES

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

MARK KASOW M.D. (NPI 1619946266) is an individual family medicine provider in Thousand Oaks, California, licensed in California (A39116) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619946266
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameMARK KASOWCredential: M.D.
Location Address620 E JANSS RDThousand Oaks, CA 91360-5113
Mailing Address1980 Orange Tree Ln, Ste 103Redlands, CA 92374-2803 · (909) 583-2741 · Fax (909) 793-2916
Phone(805) 495-6866
Sole ProprietorNo
Enumeration DateMarch 16, 2006
Last NPPES UpdateMarch 29, 2016
✔ NPI 1619946266 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A39116
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
620 E JANSS RD, Thousand Oaks, CA 91360
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Other Identifiers 3

Medicare UPINBX136ZCA
Medicare UPINA28815CA
Medicare PINZZZ07334ZCA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Kasow M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Mark Kasow reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pinnacle Medical Group, Inc
82 mi
Family Medicine
8110 MANGO AVE
Fontana, CA 92335
  • Reassigned Medicare billing, California enrollment
  • 149 clinicians in this Medicare group
NPI 1376876912 (909) 427-1303
Desert Medical Group, Inc.
138 mi
Family Medicine
275 N EL CIELO RD
Palm Springs, CA 92262
  • Reassigned Medicare billing, California enrollment
  • 167 clinicians in this Medicare group
NPI 1114918612 (760) 320-4122

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91360 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MUNIRA HUSAIN M.D.
Family Medicine (Adult Medicine)
620 E JANSS RD, THOUSAND OAKS URGENT CARE
THOUSAND OAKS, CA 91360
Ventura County (805) 495-6866
THOUSAND OAKS URGENT CARE
Family Medicine
620 E JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 495-6866
SPRINGBOK MEDICAL GROUP INC
Clinic/Center
620 E JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 495-6866

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 Mark Kasow's NPI number?

The NPI number for Mark Kasow is 1619946266. It was assigned to this individual provider in the NPPES registry on March 16, 2006.

Where is Mark Kasow located?

Mark Kasow practices at 620 E Janss Rd, Thousand Oaks, CA 91360. The listed phone number is (805) 495-6866.

What is Mark Kasow's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mark Kasow enrolled in Medicare?

Yes. Mark Kasow is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Kasow's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Kasow reassigns Medicare benefits to 2 organizations: Pinnacle Medical Group, Inc (Fontana, CA) and Desert Medical Group, Inc. (Palm Springs, CA). Each 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 Mark Kasow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Kasow was last updated on March 29, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.