Wei Bai, MD
Hematology & Oncology Physician · Santa Maria, CA
Wei Bai, MD is a hematology & oncology physician with a practice address in Santa Maria, California, and NPI 1053567545, issued on Aug 15, 2008. Check the license (California C166101, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wei Bai
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- C166101 CA
MD153848 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1325 E Church St Ste 301, Santa Maria, CA 93454
- Phone
- (805) 349-9393
- Enumerated
- Aug 15, 2008
- Record last updated
- Apr 22, 2026
- Fax
- (805) 349-1155
- Medicare enrollment
- Enrolled (PECOS I20200513000824); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1325 E Church St Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Keith Ayrons, M.D.Hematology & Oncology Physician1831143775
- Ginger CarmichaelNurse Practitioner1760974018
- Brent Cham, MDMedical Oncology Physician1265061600
- Heather Cunningham, MDHematology & Oncology Physician1134359581
- Kathleen Kennedy, M.D.Hematology & Oncology Physician1528080967
- Kevin Kim, M.D.Hematology & Oncology Physician1689768848
Verify Wei Bai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C166101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
570 Medicare Part D claims for 125 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 15 claims were for opioids.
Most prescribed
- Letrozole106 claims
- Anastrozole64 claims
- Hydroxyurea50 claims
- Xarelto34 claims
- Alendronate Sodium29 claims
- Eliquis21 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): 96.5 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: $17,003.30
23 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 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 one group practice
- Pacific Central Coast Health CentersSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Wei Bai, MD's NPI number?
Wei Bai, MD's National Provider Identifier (NPI) is 1053567545, issued on Aug 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Wei Bai, MD located?
The NPPES record lists a practice address at 1325 E Church St Ste 301, Santa Maria, CA, 93454. Phone: (805) 349-9393. Providers update this record themselves, so call before visiting.
How can I verify Wei Bai, MD's license?
NPPES lists California license number C166101, 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 Wei Bai, MD prescribe under Medicare Part D?
In 2024, Wei Bai, MD had 570 Medicare Part D claims for 125 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Wei Bai, MD's MIPS final score?
The 2023 MIPS final score is 96.5 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.