Xihua Sun, M.D. ,M.S.
NPI 1851326672 · Specialist · San Jose, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xihua Sun, M.D. ,M.S. is a Specialist provider in San Jose, CA (NPI 1851326672).
Provider details
- NPI number
- 1851326672
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D. ,M.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A55886 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
637 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 227 | $114 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 119 | $149 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 108 | $194 |
| Injection of Chemical for Paralysis of Facial and Neck Nerve Muscles on Both Sides of Face64615 | 71 | $176 |
| Critical Care, First 30-74 Minutes99291 | 65 | $232 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 28 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Donepezil Hcl | 99 | 31 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 72 | 19 |
| Levetiracetam | 69 | 18 |
| Gabapentin | 68 | 32 |
| Memantine Hcl | 32 | — |
| Baclofen | 30 | — |
| Quetiapine Fumarate | 30 | — |
| Lacosamide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,182 across 33 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
- 2006-07-11
- Last updated
- 2008-08-12
Frequently asked questions
- What is Xihua Sun's NPI number?
- Xihua Sun's National Provider Identifier (NPI) is 1851326672, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xihua Sun's specialty?
- Xihua Sun is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Xihua Sun located?
- Xihua Sun's practice location on file with NPPES is 361 S Monroe St, San Jose, CA 95128-5107.
- What is Xihua Sun's phone number?
- The practice phone number listed in the NPPES registry for Xihua Sun is (408) 557-0550.
- Does Xihua Sun accept Medicare?
- Xihua Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xihua Sun's NPI active?
- Yes — Xihua Sun's NPI (1851326672) is active in the NPPES registry as of the last update on 2008-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.