HELENA NINGNA YOU MD
NPI 1528697554
Radiology - Diagnostic Radiology in Stanford, CA
About Helena Ningna You Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HELENA NINGNA YOU MD (NPI 1528697554) is an individual diagnostic radiology provider in Stanford, California, licensed in California (A199762) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Dallas, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2020).
NPPES Registry Identity
Specialties & Licenses 2
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 and accepts Medicare assignment
Helena Ningna You 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 Reassignments
6Medicare enrollment records show Helena You reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
San Jose, CA 95124
- Reassigned Medicare billing, California enrollment
- 181 clinicians in this Medicare group
Oakland, CA 94609
- Reassigned Medicare billing, California enrollment
- 158 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 129 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Helena You's NPI number?
The NPI number for Helena You is 1528697554. It was assigned to this individual provider in the NPPES registry on April 2, 2020.
Where is Helena You located?
Helena You practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Helena You's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Helena You enrolled in Medicare?
Yes. Helena You 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 organizations bill Medicare for Helena You's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Helena You reassigns Medicare benefits to 6 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), Bay Imaging Consultants Medical Group Inc (San Jose, CA), Magnetic Imaging Affiliates, LLC (Oakland, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA) and 1 more organization, listed in the Medicare section above. 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 Helena You'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 Helena You was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Helena Ningna You, MD · NPI 1528697554
Diagnostic Radiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since April 2, 2020.
## Identity
- **NPI:** 1528697554 (Entity type: Individual)
- **Enumerated:** April 2, 2020
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A199762 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Bay Imaging Consultants Medical Group Inc (NPI 1205559713, San Jose, CA); Magnetic Imaging Affiliates, LLC (NPI 1487040770, Oakland, CA); John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Southwestern Medical School At Dallas, class of 2020
## Record status
- **NPPES last updated:** September 9, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1528697554) · Data from the CMS NPPES public registry.