Xihua Sun, M.D. ,M.S.
Specialist · San Jose, CA
Xihua Sun, M.D. ,M.S. is a specialist with a practice address in San Jose, California, and NPI 1851326672, issued on Jul 11, 2006. Check the license (California A55886, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Xihua Sun
- Credential
- M.D. ,M.S.
- Primary taxonomy
- Specialist 174400000X
- License number
- A55886 CA
Self-reported in NPPES; status is on the state search - Practice location
- 361 S Monroe St, San Jose, CA 95128
- Phone
- (408) 557-0550
- Enumerated
- Jul 11, 2006
- Record last updated
- Aug 12, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (408) 248-4591
- Medicare enrollment
- Enrolled (PECOS I20050602000838); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 361 S Monroe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Anagnos, M.D.Sleep Medicine (Psychiatry & Neurology) Physician1174542047
Verify Xihua Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A55886Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average specialist in 2024
637 Medicare Part D claims for 133 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Donepezil Hcl99 claims
- Carbidopa-Levodopa72 claims
- Levetiracetam69 claims
- Gabapentin68 claims
- Memantine Hcl32 claims
- Baclofen30 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,181.80
33 payments; by number, the most common kind was food and beverage; the largest payer was Catalyst Pharmaceuticals, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Xihua Sun among 5,749 specialist records in California
Xihua Sun, M.D. ,M.S. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1982 · median 1989 among the 1,075 with a school on file
- Record last updated2008 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in San Jose → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Charles Aring, M.D.San Jose, CA 951281295751162
- Ella Benoza, M.D.San Jose, CA 951281457392219
- Sun-Yin Chan, M.D.San Jose, CA 951281275636227
- Hashem Farr, MDSan Jose, CA 951281336164375
- Andrew Koo, M.D.San Jose, CA 951281255363677
- Jennifer Maw, MDSan Jose, CA 951281609989417
- Donald Prolo, M.D.San Jose, CA 951281467420976
- Jay Raju, MDSan Jose, CA 951281699706556
Common questions
What is Xihua Sun, M.D. ,M.S.'s NPI number?
Xihua Sun, M.D. ,M.S.'s National Provider Identifier (NPI) is 1851326672, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Xihua Sun, M.D. ,M.S. located?
The NPPES record lists a practice address at 361 S Monroe St, San Jose, CA, 95128. Phone: (408) 557-0550. Providers update this record themselves, so call before visiting.
How can I verify Xihua Sun, M.D. ,M.S.'s license?
NPPES lists California license number A55886, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Xihua Sun, M.D. ,M.S. prescribe under Medicare Part D?
In 2024, Xihua Sun, M.D. ,M.S. had 637 Medicare Part D claims for 133 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.