Timothy Yo Wu, MD
Internal Medicine Physician · Montclair, CA
Timothy Yo Wu, MD is an internal medicine physician with a practice address in Montclair, California, and NPI 1700375656, issued on May 7, 2018. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy Yo Wu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125071848 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9525 Monte Vista Ave # 105, Montclair, CA 91763
- Phone
- (909) 731-2715
- Enumerated
- May 7, 2018
- Record last updated
- Jul 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20211004000616); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 9525 Monte Vista Ave # 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Atif Qadeer, MDInternal Medicine Physician1730160201
Verify Timothy Yo Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average internal medicine physician in 2024
3,197 Medicare Part D claims for 475 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 96 claims were for opioids.
Most prescribed
- Furosemide136 claims
- Atorvastatin Calcium131 claims
- Eliquis79 claims
- Levetiracetam70 claims
- Gabapentin67 claims
- Hydrocodone-Acetaminophen67 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: $546.39
41 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Inland Physicians Hospitalist ServicesUpland, CA
- Inland Physicians Primary Care ServicesMontclair, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Yo Wu among 17,696 internal medicine physician records in California
Timothy Yo Wu, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2018 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Montclair
They are 12 of the 1,301 NPPES records with a practice address in Montclair, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Montclair → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mohammed Al-Khayyat, M.D.Montclair, CA 917631588195424
- Khanh Duong, MDMontclair, CA 917631225528466
- Dion Kencana, MDMontclair, CA 917631528709805
- Sadia Khan, MDMontclair, CA 917631225271125
- George Moran, MDMontclair, CA 917631639673635
- Kiandokht Partovi, M.D.Montclair, CA 917631689763427
- Atif Qadeer, MDMontclair, CA 917631730160201
- Ali Salem, M.D.Montclair, CA 917631376983122
Common questions
What is Timothy Yo Wu, MD's NPI number?
Timothy Yo Wu, MD's National Provider Identifier (NPI) is 1700375656, issued on May 7, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Yo Wu, MD located?
The NPPES record lists a practice address at 9525 Monte Vista Ave # 105, Montclair, CA, 91763. Phone: (909) 731-2715. Providers update this record themselves, so call before visiting.
How can I verify Timothy Yo Wu, MD's license?
Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy Yo Wu, MD prescribe under Medicare Part D?
In 2024, Timothy Yo Wu, MD had 3,197 Medicare Part D claims for 475 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.