David Wong, M.D.
NPI 1386654200 · Gastroenterology Physician · San Ramon, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Wong, M.D. is a Gastroenterology Physician provider in San Ramon, CA (NPI 1386654200).
Provider details
- NPI number
- 1386654200
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G071461 (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
1,148 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 | 342 | $146 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 165 | $89 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 140 | $186 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 106 | $263 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 55 | $192 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 664 | 213 |
| Pantoprazole Sodium | 275 | 83 |
| Famotidine | 187 | 70 |
| Misoprostol | 108 | 39 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 89 | 88 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 58 | 12 |
| Linaclotidebrand: Linzess | 54 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,725 across 68 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
- 2006-08-09
- Last updated
- 2024-06-25
- Certified
- 2024-06-25
Frequently asked questions
- What is David Wong's NPI number?
- David Wong's National Provider Identifier (NPI) is 1386654200, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Wong's specialty?
- David Wong is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is David Wong located?
- David Wong's practice location on file with NPPES is 5801 Norris Canyon Rd, San Ramon, CA 94583-5440.
- What is David Wong's phone number?
- The practice phone number listed in the NPPES registry for David Wong is (925) 275-9966.
- Does David Wong accept Medicare?
- David Wong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Wong's NPI active?
- Yes — David Wong's NPI (1386654200) is active in the NPPES registry as of the last update on 2024-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.