Yi Zheng, M.D.
NPI 1851622427 · Gastroenterology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yi Zheng, M.D. is a Gastroenterology Physician provider in Walnut Creek, CA (NPI 1851622427).
Provider details
- NPI number
- 1851622427
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A95560 (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
16 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
1,671 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 | 623 | $153 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 198 | $197 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 160 | $81 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 160 | $117 |
| Biopsy of Small Bowel (except Ileum) Using an Endoscope44361 | 150 | $164 |
| Ultrasound Scan of Organ Tissue for Measuring Elasticity |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 352 | 139 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 179 | 178 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 90 | 81 |
| Pantoprazole Sodium | 63 | 20 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 53 | 42 |
| Mesalamine | 30 | — |
| Sod Sulf/Pot Chloride/Mag Sulf |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$554 across 20 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
- 2010-01-21
- Last updated
- 2020-05-21
- Certified
- 2020-05-21
Frequently asked questions
- What is Yi Zheng's NPI number?
- Yi Zheng's National Provider Identifier (NPI) is 1851622427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yi Zheng's specialty?
- Yi Zheng is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Yi Zheng located?
- Yi Zheng's practice location on file with NPPES is 2021 Ygnacio Valley Rd Ste E105, Walnut Creek, CA 94598-3391.
- What is Yi Zheng's phone number?
- The practice phone number listed in the NPPES registry for Yi Zheng is (925) 384-9276.
- Does Yi Zheng accept Medicare?
- Yi Zheng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yi Zheng's NPI active?
- Yes — Yi Zheng's NPI (1851622427) is active in the NPPES registry as of the last update on 2020-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.