Dennis Shen, MD
NPI 1316049190 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Shen, MD is a Gastroenterology Physician provider in San Francisco, CA (NPI 1316049190).
Provider details
- NPI number
- 1316049190
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A40994 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
688 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 221 | $154 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 128 | $6 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 69 | $198 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 60 | $131 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 58 | $170 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 765 | 338 |
| Famotidine | 476 | 189 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 281 | 281 |
| Entecavir | 118 | 36 |
| Tenofovir Alafenamidebrand: Vemlidy | 115 | 16 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 87 | 87 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$231 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Dennis Shen's NPI number?
- Dennis Shen's National Provider Identifier (NPI) is 1316049190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Shen's specialty?
- Dennis Shen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Shen located?
- Dennis Shen's practice location on file with NPPES is 909 Hyde St, San Francisco, CA 94109-4822.
- What is Dennis Shen's phone number?
- The practice phone number listed in the NPPES registry for Dennis Shen is (415) 292-3313.
- Does Dennis Shen accept Medicare?
- Dennis Shen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Shen's NPI active?
- Yes — Dennis Shen's NPI (1316049190) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.