Walter Tsang, MD
Hematology & Oncology Physician · Highland, CA
Walter Tsang, MD is a hematology & oncology physician with a practice address in Highland, California, and NPI 1285861799, issued on Jun 11, 2009. Check the license (California A106910, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter Tsang
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A106910 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7000 Boulder Ave, Highland, CA 92346
- Phone
- (909) 862-1191
- Enumerated
- Jun 11, 2009
- Record last updated
- Jan 22, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130824000244); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 7000 Boulder Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saad Aldaoud, MDInternal Medicine Physician1992297717
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- Redentor Bacani, PA-CMedical Physician Assistant1487725693
- Brian Beitel, M.D.Obstetrics & Gynecology Physician1710922141
- Marian Beshara, M.D.Internal Medicine Physician1982649448
Verify Walter Tsang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106910Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average hematology & oncology physician in 2024
1,826 Medicare Part D claims for 371 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims. 54 claims were for opioids.
Most prescribed
- Anastrozole302 claims
- Ondansetron Hcl94 claims
- Prednisone64 claims
- Procrit64 claims
- Xtandi63 claims
- Zarxio55 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: $4,114.76
176 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals 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
- Austin J MA MD A Professional CorporationRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter Tsang among 1,583 hematology & oncology physician records in California
Walter Tsang, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2007 · median 2003 among the 1,124 with a school on file
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Highland → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Joel Brothers, MDLoma Linda, CA 923501427311034
- Huynh Cao, MDLoma Linda, CA 923501720238249
- Roshni NarurkarLoma Linda, CA 923501457728396
- Chung-Tsen Hsueh, M.D.Loma Linda, CA 923541386671907
- John Shin, M.D.Loma Linda, CA 923541992111520
- Daljeet Bansal, MDLoma Linda, CA 923571972691046
- Gerald Battersby, MDFontana, CA 923351467511030
- Joseph Chan, M.D.Fontana, CA 923351497796189
Common questions
What is Walter Tsang, MD's NPI number?
Walter Tsang, MD's National Provider Identifier (NPI) is 1285861799, issued on Jun 11, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Walter Tsang, MD located?
The NPPES record lists a practice address at 7000 Boulder Ave, Highland, CA, 92346. Phone: (909) 862-1191. Providers update this record themselves, so call before visiting.
How can I verify Walter Tsang, MD's license?
NPPES lists California license number A106910, 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 Walter Tsang, MD prescribe under Medicare Part D?
In 2024, Walter Tsang, MD had 1,826 Medicare Part D claims for 371 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.