KENNETH S. OSTROW MD
NPI 1043397995
Radiology - Vascular & Interventional Radiology in Santa Clara, CA
About Kenneth S. Ostrow Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KENNETH S. OSTROW MD (NPI 1043397995) is an individual vascular & interventional radiology provider in Santa Clara, California, licensed in California (G72893) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Kenneth S. Ostrow Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Kenneth Ostrow reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95051 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA CLARA, CA 95051
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 Kenneth Ostrow's NPI number?
The NPI number for Kenneth Ostrow is 1043397995. It was assigned to this individual provider in the NPPES registry on October 31, 2006.
Where is Kenneth Ostrow located?
Kenneth Ostrow practices at 900 Kiely Blvd, Santa Clara, CA 95051. The listed phone number is (408) 236-6400.
What is Kenneth Ostrow's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is Kenneth Ostrow enrolled in Medicare?
Yes. Kenneth Ostrow is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Kenneth Ostrow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Ostrow reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The 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 Kenneth Ostrow'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 Kenneth Ostrow was last updated on December 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Kenneth S. Ostrow, MD · NPI 1043397995
Vascular & Interventional Radiology physician in Santa Clara, California. Individual provider, active in the CMS NPPES registry since October 31, 2006.
## Identity
- **NPI:** 1043397995 (Entity type: Individual)
- **Enumerated:** October 31, 2006
- **Primary specialty:** Radiology - Vascular & Interventional Radiology · taxonomy 2085R0204X
- **State license:** G72893 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 900 KIELY BLVD, Santa Clara, CA 95051-5329
- **Phone:** (408) 236-6400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** December 10, 2021
- **Other identifiers:** Medicaid 00G728930 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1043397995) · Data from the CMS NPPES public registry.