Ivan W. Cheng, MD
Critical Care Medicine (Internal Medicine) Physician · San Francisco, CA
Ivan W. Cheng, MD is a critical care medicine (internal medicine) physician with a practice address in San Francisco, California, and NPI 1639253438, issued on Oct 25, 2006. Check the license (California A63339, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ivan W. Cheng
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A63339 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2351 Clay St, San Francisco, CA 94115
- Phone
- (415) 923-3421
- Enumerated
- Oct 25, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (415) 600-1414
- Medicaid ID
- 00A633390 CA
- Medicare enrollment
- Enrolled (PECOS I20040211001244); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1995
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 2351 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Au, M.D.Student in an Organized Health Care Education/Training Program1902148091
- Geoffrey Bailey-Gates, M.D.Student in an Organized Health Care Education/Training Program1306137708
- Christopher Brown, MDPulmonary Disease Physician1104900901
- Tze-Ming Chen, M.D.Pulmonary Disease Physician1215092705
- Lisa Chui, M.D.Student in an Organized Health Care Education/Training Program1689992927
- Jey Chung, M.D.Internal Medicine Physician1306071626
Verify Ivan W. Cheng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $18,189.99
17 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,708 providers of this specialty with any payment received $2,958.68 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
- Permanente Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ivan W. Cheng among 723 critical care medicine (internal medicine) physician records in California
Ivan W. Cheng, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1995 · median 2005 among the 559 with a school on file
- Record last updated2021 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in San Francisco → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Mehrdad Arjomandi, MDSan Francisco, CA 941151912951153
- Ryan Chang, MDSan Francisco, CA 941151831277417
- Michael Coppolino, MDSan Francisco, CA 941151700964350
- Scott Ferguson, MDSan Francisco, CA 941151770661373
- Sheryl Goldyn, MD, MPHSan Francisco, CA 941151770783250
- Noreen Henig, MDSan Francisco, CA 941151881778686
- James Hershon, MDSan Francisco, CA 941151508940305
- George Horng, MDSan Francisco, CA 941151306924972
Common questions
What is Ivan W. Cheng, MD's NPI number?
Ivan W. Cheng, MD's National Provider Identifier (NPI) is 1639253438, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ivan W. Cheng, MD located?
The NPPES record lists a practice address at 2351 Clay St, San Francisco, CA, 94115. Phone: (415) 923-3421. Providers update this record themselves, so call before visiting.
How can I verify Ivan W. Cheng, MD's license?
NPPES lists California license number A63339, 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.
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.