Benjamin Chun-Bang Weia, MD
Internal Medicine Physician · Stanford, CA
Benjamin Chun-Bang Weia, MD is an internal medicine physician with a practice address in Stanford, California, and NPI 1316441694, issued on Mar 21, 2018. Check the license (California A163611, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin Chun-Bang Weia
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A163611 CA
V9995 TX
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-6661
- Enumerated
- Mar 21, 2018
- Record last updated
- Feb 5, 2026
- Fax
- (650) 498-6205
- Medicare enrollment
- Enrolled (PECOS I20260311002284); may accept Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cooper Aakhus, MDEmergency Medicine Physician1194351007
- Oliver Aalami, M.D.Vascular Surgery Physician1225229024
- Alistair Aaronson, MDInternal Medicine Physician1457628760
- Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
- Fahim Abbasi, M.D.Internal Medicine Physician1841484037
- Mohamad Abbass, MDNeurological Surgery Physician1679492151
Verify Benjamin Chun-Bang Weia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A163611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
180 Medicare Part D claims for 131 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Cephalexin21 claims
- Albuterol Sulfate Hfa15 claims
- Amoxicillin13 claims
- Azithromycin12 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): 84.9 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).
Benjamin Chun-Bang Weia among 17,696 internal medicine physician records in California
Benjamin Chun-Bang Weia, 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 updated2026 · 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).
378 internal medicine physician records list a practice address in Stanford
They are 378 of the 5,606 NPPES records with a practice address in Stanford, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Stanford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michele Barry, MDStanford, CA 943051407839632
- Jennifer Bollyky, M.D.Stanford, CA 943051497717748
- Nancy Cuan, MDStanford, CA 943051891764791
- Korina De Bruyne, MDStanford, CA 943051770545824
- Madhav Goyal, MDStanford, CA 943051386697878
- Theresa Greco, MDStanford, CA 943051356318240
- Maria Juarez-Reyes, MD, PHDStanford, CA 943051790749877
- Lawrence Kwan, MDStanford, CA 943051922062835
Common questions
What is Benjamin Chun-Bang Weia, MD's NPI number?
Benjamin Chun-Bang Weia, MD's National Provider Identifier (NPI) is 1316441694, issued on Mar 21, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Chun-Bang Weia, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-6661. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Chun-Bang Weia, MD's license?
NPPES lists California license number A163611, as entered by the provider. 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 Benjamin Chun-Bang Weia, MD prescribe under Medicare Part D?
In 2024, Benjamin Chun-Bang Weia, MD had 180 Medicare Part D claims for 131 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Benjamin Chun-Bang Weia, MD's MIPS final score?
The 2023 MIPS final score is 84.9 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.