NPPES file of Aug 9, 2026

Siu-Wei Huang, M.D.

Internal Medicine Physician · San Francisco, CA

Siu-Wei Huang, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1427584143, issued on May 2, 2017. Check the license (California A160096, 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
1427584143
Name
Siu-Wei Huang
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A160096 CA
Self-reported in NPPES; status is on the state search
Practice location
2100 Webster St Ste 516, San Francisco, CA 94115
Phone
(415) 600-2402
Enumerated
May 2, 2017
Record last updated
Jan 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(415) 369-1292
Medicare enrollment
Enrolled (PECOS I20201015001301); accepts Medicare assignment
Medical or professional school
Drexel University College Of Medicine, 2017
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →

Also registered at 2100 Webster St Ste 516

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

  1. Hannah Archibald, MDInternal Medicine Physician1801356746
  2. Grace ChangPhysician Assistant1508424805
  3. Silvia McCandlish, MDHospice and Palliative Medicine (Internal Medicine) Physician1912325135
  4. Sonali Waland, NPFamily Nurse Practitioner1982161584
  5. Ingeborg Zoppoth, M.D.Internal Medicine Physician1780021766

Verify Siu-Wei Huang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A160096    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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43% more Medicare Part D claims than the average internal medicine physician in 2024

4,529 Medicare Part D claims for 505 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 163 claims were for opioids.

  1. Siu-Wei Huang4,529
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium451 claims
  2. Amlodipine Besylate326 claims
  3. Losartan Potassium184 claims
  4. Levothyroxine Sodium145 claims
  5. Metformin Hcl141 claims
  6. Gabapentin125 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: $20.67

1 payment: food and beverage; the largest payer was CooperSurgical, Inc. 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.

  1. Siu-Wei Huang$20.67
  2. Specialty average$1,303.06

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

  1. Sutter Bay Medical FoundationSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Siu-Wei Huang among 17,696 internal medicine physician records in California

Siu-Wei Huang, M.D. 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 2017, is newer than 81% of them.

  • NPI issued2017 · 81% of these records are older, 16% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2017 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 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).

1,318 internal medicine physician records list a practice address in San Francisco

They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.

All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Gary Arsham, M.D.San Francisco, CA 941151487646758
  2. Richard Caplin, M.D.San Francisco, CA 941151568443455
  3. C Cooney, M.D.San Francisco, CA 941151255332094
  4. Sarita Dubey, MDSan Francisco, CA 941151316905466
  5. Meredith Heller, M.D.San Francisco, CA 941151073562096
  6. Alan Leung, MDSan Francisco, CA 941151245222330
  7. Susan Nguyen, MDSan Francisco, CA 941151164470696
  8. Daniel Null, MDSan Francisco, CA 941151689638744

Common questions

What is Siu-Wei Huang, M.D.'s NPI number?

Siu-Wei Huang, M.D.'s National Provider Identifier (NPI) is 1427584143, issued on May 2, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Siu-Wei Huang, M.D. located?

The NPPES record lists a practice address at 2100 Webster St Ste 516, San Francisco, CA, 94115. Phone: (415) 600-2402. Providers update this record themselves, so call before visiting.

How can I verify Siu-Wei Huang, M.D.'s license?

NPPES lists California license number A160096, 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 Siu-Wei Huang, M.D. prescribe under Medicare Part D?

In 2024, Siu-Wei Huang, M.D. had 4,529 Medicare Part D claims for 505 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.