OANA V SPATARU M.D.
NPI 1518153824
Psychiatry & Neurology - Vascular Neurology in Walnut Creek, CA
About Oana V Spataru M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OANA V SPATARU M.D. (NPI 1518153824) is an individual vascular neurology provider in Walnut Creek, California, licensed in California (A116468) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses 4
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Oana V Spataru M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Oana Spataru reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
Danville, CA 94506
- Reassigned Medicare billing, California enrollment
Oakland, CA 94605
- Reassigned Medicare billing, California enrollment
- 900 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 5
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 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
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 Oana Spataru's NPI number?
The NPI number for Oana Spataru is 1518153824. It was assigned to this individual provider in the NPPES registry on September 20, 2007. The provider is also known as Oana V Nichita M.D..
Where is Oana Spataru located?
Oana Spataru practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. The listed phone number is (925) 939-3000.
What is Oana Spataru's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Vascular Neurology, with taxonomy code 2084V0102X.
Is Oana Spataru enrolled in Medicare?
Yes. Oana Spataru is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Oana Spataru's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oana Spataru reassigns Medicare benefits to 5 organizations: John Muir Trauma Physicians Billing Service (Walnut Creek, CA), Diablo Neurosurgical Medical Group, Inc. (Walnut Creek, CA), Sutter Bay Medical Foundation (Orinda, CA), Golden State Stroke And Neurocritical Care, Inc. (Danville, CA) and Alameda Health System (Oakland, 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 Oana Spataru'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 Oana Spataru was last updated on August 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Oana V Spataru, M.D. · NPI 1518153824
Vascular Neurology physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since September 20, 2007.
## Identity
- **NPI:** 1518153824 (Entity type: Individual)
- **Enumerated:** September 20, 2007
- **Primary specialty:** Psychiatry & Neurology - Vascular Neurology · taxonomy 2084V0102X
- **State license:** A116468 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598-3194
- **Phone:** (925) 939-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA); Diablo Neurosurgical Medical Group, Inc. (NPI 1265445993, Walnut Creek, CA); Sutter Bay Medical Foundation (NPI 1366898538, Orinda, CA); Golden State Stroke And Neurocritical Care, Inc. (NPI 1871481499, Danville, CA); Alameda Health System (NPI 1932300738, Oakland, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** August 5, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1518153824) · Data from the CMS NPPES public registry.