Suisun Chan, M.D.
NPI 1801815527 · Gastroenterology Physician · Monterey Park, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Suisun Chan, M.D. is a Gastroenterology Physician provider in Monterey Park, CA (NPI 1801815527).
Provider details
- NPI number
- 1801815527
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A42588 (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
573 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 150 | $120 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 111 | $113 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $99 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 83 | $98 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 81 | $199 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sucralfate | 1,227 | 347 |
| Lansoprazole | 1,020 | 288 |
| Famotidine | 512 | 147 |
| Esomeprazole Magnesium | 141 | 57 |
| Pantoprazole Sodium | 94 | 47 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 56 | 17 |
| Lipase/Protease/Amylasebrand: Creon | 53 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$120 across 1 record (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
- 2006-07-19
- Last updated
- 2007-07-09
Frequently asked questions
- What is Suisun Chan's NPI number?
- Suisun Chan's National Provider Identifier (NPI) is 1801815527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Suisun Chan's specialty?
- Suisun Chan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Suisun Chan located?
- Suisun Chan's practice location on file with NPPES is 500 N Garfield Ave, Monterey Park, CA 91754-1242.
- What is Suisun Chan's phone number?
- The practice phone number listed in the NPPES registry for Suisun Chan is (626) 288-8292.
- Does Suisun Chan accept Medicare?
- Suisun Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Suisun Chan's NPI active?
- Yes — Suisun Chan's NPI (1801815527) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.