Dennis D. Shen, MD
Gastroenterology Physician · San Francisco, CA
Dennis D. Shen, MD is a gastroenterology physician with a practice address in San Francisco, California, and NPI 1316049190, issued on Sep 2, 2006. Check the license (California A40994, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dennis D. Shen
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A40994 CA
Self-reported in NPPES; status is on the state search - Practice location
- 909 Hyde St, San Francisco, CA 94109
- Phone
- (415) 292-3313
- Enumerated
- Sep 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 563-5561
- Medicare enrollment
- Enrolled (PECOS I20041104001177); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 909 Hyde St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dennis D. Shen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A40994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,327 Medicare Part D claims for 921 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Pantoprazole Sodium765 claims
- Famotidine476 claims
- Gavilyte-C281 claims
- Entecavir118 claims
- Vemlidy115 claims
- Gavilyte-G87 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: $231.12
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- North East Medical ServicesSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis D. Shen among 2,140 gastroenterology physician records in California
Dennis D. Shen, 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
- Graduated1980 · median 2002 among the 1,538 with a school on file
- Record last updated2007 · 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 San Francisco → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kenneth Binmoeller, MDSan Francisco, CA 941091851321715
- Christina Chou, MDSan Francisco, CA 941091164749628
- Richard Frederick, M.D.San Francisco, CA 941091720009160
- Thomas Haddad, M.D.San Francisco, CA 941091932151867
- Christopher Hamerski, M.D.San Francisco, CA 941091205033420
- Kenneth Hammerman, MDSan Francisco, CA 941091174600365
- Mimi Lin, M.D.San Francisco, CA 941091659588457
- Jagrati Mathur, MDSan Francisco, CA 941091205000734
Common questions
What is Dennis D. Shen, MD's NPI number?
Dennis D. Shen, MD's National Provider Identifier (NPI) is 1316049190, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis D. Shen, MD located?
The NPPES record lists a practice address at 909 Hyde St, San Francisco, CA, 94109. Phone: (415) 292-3313. Providers update this record themselves, so call before visiting.
How can I verify Dennis D. Shen, MD's license?
NPPES lists California license number A40994, 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 Dennis D. Shen, MD prescribe under Medicare Part D?
In 2024, Dennis D. Shen, MD had 2,327 Medicare Part D claims for 921 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.