Guinea Fan, M.D.
NPI 1356504716 · Gastroenterology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guinea Fan, M.D. is a Gastroenterology Physician provider in Sacramento, CA (NPI 1356504716).
Provider details
- NPI number
- 1356504716
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A106539 (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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
503 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) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure, Each Additional 15 Minutes99153 | 114 | $13 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 96 | $64 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 46 | $284 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 39 | $117 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 37 | $473 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 43 | 40 |
| Pantoprazole Sodium | 41 | 20 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 33 | 31 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 29 | 28 |
| Omeprazole | 21 | 11 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 16 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$112 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
Additional practice locations (2)
- 11795 Education St Ste 213Auburn, CA 95602-2469Phone: (530) 886-6800Fax: (530) 886-6801
- 6600 Bruceville RdDept of Gastroenterology, Medical Office Building 2Sacramento, CA 95823-4671Phone: (916) 688-2028Fax: (916) 688-2790
Registry dates
- Enumerated
- 2008-07-07
- Last updated
- 2020-02-26
- Certified
- 2020-02-26
Frequently asked questions
- What is Guinea Fan's NPI number?
- Guinea Fan's National Provider Identifier (NPI) is 1356504716, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guinea Fan's specialty?
- Guinea Fan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Guinea Fan located?
- Guinea Fan's practice location on file with NPPES is 4150 V St Ste 3500, Sacramento, CA 95817-1460.
- What is Guinea Fan's phone number?
- The practice phone number listed in the NPPES registry for Guinea Fan is (916) 734-7224.
- Does Guinea Fan accept Medicare?
- Guinea Fan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guinea Fan's NPI active?
- Yes — Guinea Fan's NPI (1356504716) is active in the NPPES registry as of the last update on 2020-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.