NPPES file of Aug 9, 2026

Walter Robert Hsiang, MD, MBA

Urology Physician · San Francisco, CA

Walter Robert Hsiang, MD, MBA is a urology physician with a practice address in San Francisco, California, and NPI 1770151920, issued on Jun 15, 2021. Check the license (California 5959, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770151920
Name
Walter Robert Hsiang
Credential
MD, MBA
Primary taxonomy
Urology Physician 208800000X
License number
5959 CA
Self-reported in NPPES; status is on the state search
Practice location
400 Parnassus Ave # A610, San Francisco, CA 94143
Phone
(415) 353-2200
Enumerated
Jun 15, 2021
Record last updated
Jul 22, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 400 Parnassus Ave # A610

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Diego Alvarez VegaStudent in an Organized Health Care Education/Training Program1578415873
  2. Rebecca Arteaga, MDUrology Physician1417560111
  3. Ashwin BalakrishnanUrology Physician1932660719
  4. Madeleine BallStudent in an Organized Health Care Education/Training Program1346004652
  5. Anthony Bella, M.D.Urology Physician1538278569
  6. Benjamin Breyer, M.D.Urology Physician1316160211

Verify Walter Robert Hsiang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 5959
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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80% fewer Medicare Part D claims than the average urology physician in 2024

268 Medicare Part D claims for 140 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 23 claims were for opioids.

  1. Walter Hsiang268
  2. Specialty average1,340

Most prescribed

  1. Tamsulosin Hcl68 claims
  2. Sulfamethoxazole-Trimethoprim46 claims
  3. Ibuprofen43 claims
  4. Oxycodone Hcl19 claims
  5. Cephalexin15 claims
  6. Myrbetriq11 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: $1,227.86

15 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 9,340 providers of this specialty with any payment received $3,800.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Walter Hsiang$1,227.86
  2. Specialty average$3,800.04

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Urology Physician providers in California

There are 1,524 urology physician records in California.

Other urology physician records in California

  1. David Aaronson, MDOakland, CA1215053129
  2. Jason Abber, MDPanorama City, CA1356366926
  3. Marc Abboud, MDLos Alamitos, CA1265096531
  4. George AbdelsayedAnaheim, CA1568721843
  5. Garen AbediDowney, CA1285909051
  6. Jennifer Abidari, MDStanford, CA1811098197
  7. Sherif Aboseif, MDOxnard, CA1093882995
  8. Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
  9. Anthony Acquaviva, MDVallejo, CA1457439283
  10. Theodore Affue, M.D.El Centro, CA1386674000

Common questions

What is Walter Robert Hsiang, MD, MBA's NPI number?

Walter Robert Hsiang, MD, MBA's National Provider Identifier (NPI) is 1770151920, issued on Jun 15, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Walter Robert Hsiang, MD, MBA located?

The NPPES record lists a practice address at 400 Parnassus Ave # A610, San Francisco, CA, 94143. Phone: (415) 353-2200. Providers update this record themselves, so call before visiting.

How can I verify Walter Robert Hsiang, MD, MBA's license?

NPPES lists California license number 5959, 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 Robert Hsiang, MD, MBA prescribe under Medicare Part D?

In 2024, Walter Robert Hsiang, MD, MBA had 268 Medicare Part D claims for 140 beneficiaries; the average among urology physician prescribers was 1,340. 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.