Stefan Chin, MD
NPI 1891794152 · Gastroenterology Physician · Daly City, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stefan Chin, MD is a Gastroenterology Physician provider in Daly City, CA (NPI 1891794152).
Provider details
- NPI number
- 1891794152
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G83120 (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
20 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
1,371 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) |
|---|---|---|
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 328 | $58 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 193 | $74 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 182 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 172 | $153 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 89 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 658 | 252 |
| Famotidine | 136 | 60 |
| Peg3350/Sod Sul/Nacl/Kcl/Asb/Cbrand: Plenvu | 105 | 101 |
| Omeprazole | 104 | 30 |
| Lubiprostone | 62 | 15 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 60 | 21 |
| Linaclotidebrand: Linzess | 58 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,610 across 77 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
- 2005-07-19
- Last updated
- 2014-09-10
Frequently asked questions
- What is Stefan Chin's NPI number?
- Stefan Chin's National Provider Identifier (NPI) is 1891794152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stefan Chin's specialty?
- Stefan Chin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Stefan Chin located?
- Stefan Chin's practice location on file with NPPES is 1850 Sullivan Ave, Daly City, CA 94015-2221.
- What is Stefan Chin's phone number?
- The practice phone number listed in the NPPES registry for Stefan Chin is (650) 756-5000.
- Does Stefan Chin accept Medicare?
- Stefan Chin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stefan Chin's NPI active?
- Yes — Stefan Chin's NPI (1891794152) is active in the NPPES registry as of the last update on 2014-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.