Wenchiang Han, M.D.
Specialist · Marysville, CA
Wenchiang Han, M.D. is a specialist with a practice address in Marysville, California, and NPI 1477545721, issued on Aug 22, 2005. Check the license (California A73066, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Wenchiang Han
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A73066 CA
Self-reported in NPPES; status is on the state search - Practice location
- 414 G St, Marysville, CA 95901
- Phone
- (530) 749-8801
- Enumerated
- Aug 22, 2005
- Record last updated
- Jul 21, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (530) 749-8809
- Medicaid ID
- 00A730660 CA
- Medicare enrollment
- Enrolled (PECOS I20070810000803); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 414 G St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teresa Carter, FNPNurse Practitioner1790912384
- Michael Chin, MDCardiovascular Disease Physician1083680466
- Jennifer Duncan, N.PNurse Practitioner1043495021
- Samantha Geweke, PAMedical Physician Assistant1992719322
- Hari Goyal, M.D.Internal Medicine Physician1770571515
- Karanbir Grewal, M.D.Interventional Cardiology Physician1235105610
Verify Wenchiang Han in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A73066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average specialist in 2024
3,762 Medicare Part D claims for 450 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 91 claims were for opioids.
Most prescribed
- Donepezil Hcl380 claims
- Carbidopa-Levodopa200 claims
- Gabapentin194 claims
- Escitalopram Oxalate177 claims
- Memantine Hcl173 claims
- Levetiracetam158 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.
The MIPS final score for 2023 (Medicare payment program): 99.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,634.20
122 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Wenchiang Han among 5,749 specialist records in California
Wenchiang Han, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1986 · 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 Marysville → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Tawny BelzaMarysville, CA 959011619678539
- B. A. Doc LivingstonMarysville, CA 959011649679903
- Michelle PonseMarysville, CA 959011649832726
- Shirley Richards, FNP-CMarysville, CA 959011821124520
- Jenine Tanabe, M.D.Marysville, CA 959011558466680
- Brian Boswell, M.D.Chico, CA 959261962444117
- Susan Kehm, M.D.Chico, CA 959261578586509
- Alan Menefee, MDChico, CA 959261528005451
Common questions
What is Wenchiang Han, M.D.'s NPI number?
Wenchiang Han, M.D.'s National Provider Identifier (NPI) is 1477545721, issued on Aug 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Wenchiang Han, M.D. located?
The NPPES record lists a practice address at 414 G St, Marysville, CA, 95901. Phone: (530) 749-8801. Providers update this record themselves, so call before visiting.
How can I verify Wenchiang Han, M.D.'s license?
NPPES lists California license number A73066, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Wenchiang Han, M.D. prescribe under Medicare Part D?
In 2024, Wenchiang Han, M.D. had 3,762 Medicare Part D claims for 450 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Wenchiang Han, M.D.'s MIPS final score?
The 2023 MIPS final score is 99.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.