Henry G. Chun, MD
Gastroenterology Physician · Redwood City, CA
Henry G. Chun, MD is a gastroenterology physician with a practice address in Redwood City, California, and NPI 1952489502, issued on Nov 1, 2006. Check the license (California A63282, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Henry G. Chun
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A63282 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1150 Veterans Blvd, Redwood City, CA 94063
- Phone
- (650) 299-2000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A632820 CA
- Medicare enrollment
- Enrolled (PECOS I20040120000433); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1150 Veterans Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Ahn, MDEmergency Medicine Physician1528146180
- Pavlina Apte, M.D.Internal Medicine Physician1386785806
- Wilma Arguelles-Gaviola, MDInternal Medicine Physician1740368398
- Anil Assudani, M.D,Psychiatry Physician1497753909
- Everett Austin, MDNeurology Physician1083792642
- Lauren Bacon, DPTPhysical Therapist1295167583
Verify Henry G. Chun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63282Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average gastroenterology physician in 2024
960 Medicare Part D claims for 453 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 22 claims were for opioids.
Most prescribed
- Gavilyte-C294 claims
- Pantoprazole Sodium109 claims
- Dicyclomine Hcl58 claims
- Amitriptyline Hcl40 claims
- Xifaxan35 claims
- Motegrity34 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Henry G. Chun among 2,140 gastroenterology physician records in California
Henry G. Chun, MD is one of 2,140 gastroenterology 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1996 · median 2002 among the 1,538 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Redwood City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ming-Shing Chiu, MDRedwood City, CA 940631154409712
- Francis Chui, MDRedwood City, CA 940631033297684
- Christina Dimopoulos-Verma, MDRedwood City, CA 940631053976738
- Yejoo JeonRedwood City, CA 940631851851679
- Vivian Ng, M.D.Redwood City, CA 940631700026416
- Madhuri BadrinathRedwood City, CA 940621972030146
- Susan Cummings, MDRedwood City, CA 940621619946514
- Betty Ho, M.D.Redwood City, CA 940621134168750
Common questions
What is Henry G. Chun, MD's NPI number?
Henry G. Chun, MD's National Provider Identifier (NPI) is 1952489502, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Henry G. Chun, MD located?
The NPPES record lists a practice address at 1150 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 299-2000. Providers update this record themselves, so call before visiting.
How can I verify Henry G. Chun, MD's license?
NPPES lists California license number A63282, 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 Henry G. Chun, MD prescribe under Medicare Part D?
In 2024, Henry G. Chun, MD had 960 Medicare Part D claims for 453 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.