Matthew Chin, M.D.
NPI 1629397351 · Gastroenterology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Chin, M.D. is a Gastroenterology Physician provider in Walnut Creek, CA (NPI 1629397351).
Provider details
- NPI number
- 1629397351
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A118529 (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
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,232 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 179 | $265 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 163 | $64 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 111 | $104 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 93 | $154 |
| Review By Radiologist of Image From Tube Placement Into Bile Duct Using an Endoscope74328 | 70 | $26 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 138 | 45 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 138 | 137 |
| Pantoprazole Sodium | 94 | 35 |
| Lipase/Protease/Amylasebrand: Creon | 39 | 12 |
| Famotidine | 37 | 15 |
| Nortriptyline Hcl | 26 | — |
| Sucralfate | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$440 across 16 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
Additional practice locations (1)
- 333 City Blvd WUc Irvine, GastroenterologyOrange, CA 92868-2903Phone: (714) 456-6745
Registry dates
- Enumerated
- 2010-05-20
- Last updated
- 2018-02-26
Frequently asked questions
- What is Matthew Chin's NPI number?
- Matthew Chin's National Provider Identifier (NPI) is 1629397351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Chin's specialty?
- Matthew Chin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Chin located?
- Matthew Chin's practice location on file with NPPES is 1450 Treat Blvd Ste 200, Walnut Creek, CA 94597-2168.
- What is Matthew Chin's phone number?
- The practice phone number listed in the NPPES registry for Matthew Chin is (925) 296-7340.
- Does Matthew Chin accept Medicare?
- Matthew Chin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Chin's NPI active?
- Yes — Matthew Chin's NPI (1629397351) is active in the NPPES registry as of the last update on 2018-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.