Frances Lu, MD
NPI 1942445374 · Gastroenterology Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frances Lu, MD is a Gastroenterology Physician provider in Santa Rosa, CA (NPI 1942445374).
Provider details
- NPI number
- 1942445374
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 101544 (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
17 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
849 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 | 157 | $247 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 150 | $99 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 96 | $178 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 86 | $102 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 41 | $188 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 104 | 101 |
| Omeprazole | 103 | 55 |
| Pantoprazole Sodium | 60 | 32 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 57 | 57 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 44 | 44 |
| Famotidine | 40 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,456 across 35 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)
- 1 Quality DrVacaville, CA 95688-9494Phone: (707) 624-2668
Registry dates
- Enumerated
- 2008-12-15
- Last updated
- 2021-12-03
- Certified
- 2021-12-03
Frequently asked questions
- What is Frances Lu's NPI number?
- Frances Lu's National Provider Identifier (NPI) is 1942445374, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frances Lu's specialty?
- Frances Lu is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Frances Lu located?
- Frances Lu's practice location on file with NPPES is 500 Doyle Park Dr Ste 205, Santa Rosa, CA 95405-4559.
- What is Frances Lu's phone number?
- The practice phone number listed in the NPPES registry for Frances Lu is (707) 303-8350.
- Does Frances Lu accept Medicare?
- Frances Lu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frances Lu's NPI active?
- Yes — Frances Lu's NPI (1942445374) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.