Annette Kwon, MD
NPI 1417009630 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Annette Kwon, MD is a Gastroenterology Physician provider in San Francisco, CA (NPI 1417009630).
Provider details
- NPI number
- 1417009630
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A90599 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
756 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 | 207 | $154 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 154 | $203 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 117 | $108 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 79 | $205 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 62 | $279 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 247 | 79 |
| Pantoprazole Sodium | 199 | 64 |
| Famotidine | 198 | 61 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 89 | 88 |
| Linaclotidebrand: Linzess | 81 | 17 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 76 | 76 |
| Lipase/Protease/Amylasebrand: Creon |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,112 across 85 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
- 2007-01-17
- Last updated
- 2010-07-20
Frequently asked questions
- What is Annette Kwon's NPI number?
- Annette Kwon's National Provider Identifier (NPI) is 1417009630, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Annette Kwon's specialty?
- Annette Kwon is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Annette Kwon located?
- Annette Kwon's practice location on file with NPPES is 2100 Webster St, San Francisco, CA 94115-2373.
- What is Annette Kwon's phone number?
- The practice phone number listed in the NPPES registry for Annette Kwon is (415) 923-3050.
- Does Annette Kwon accept Medicare?
- Annette Kwon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Annette Kwon's NPI active?
- Yes — Annette Kwon's NPI (1417009630) is active in the NPPES registry as of the last update on 2010-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.