Grace Xiong, MD
NPI 1306334859 · Orthopaedic Surgery Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Xiong, MD is a Orthopaedic Surgery Physician provider in Stanford, CA (NPI 1306334859).
Provider details
- NPI number
- 1306334859
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A195901 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
11 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Partial Removal of Spine Bone With Release of Lower Spinal Cord And/Or Nerves, 1 Segment63047 | 11 | $182 |
Typical Medicare-allowed amounts for these services range $182–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,986 across 19 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-30
- Last updated
- 2024-10-07
- Certified
- 2024-10-07
Frequently asked questions
- What is Grace Xiong's NPI number?
- Grace Xiong's National Provider Identifier (NPI) is 1306334859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Xiong's specialty?
- Grace Xiong is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Xiong located?
- Grace Xiong's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Grace Xiong's phone number?
- The practice phone number listed in the NPPES registry for Grace Xiong is (650) 723-4000.
- Does Grace Xiong accept Medicare?
- Grace Xiong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Xiong's NPI active?
- Yes — Grace Xiong's NPI (1306334859) is active in the NPPES registry as of the last update on 2024-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.