Chengyu Xu, M.D.
NPI 1669600086 · Endocrinology, Diabetes & Metabolism Physician · Daly City, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chengyu Xu, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Daly City, CA (NPI 1669600086).
Provider details
- NPI number
- 1669600086
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A121215 (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 tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
540 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 208 | $150 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 130 | $3 |
| Hemoglobin A1c Level, By Device for Home Use83037 | 127 | $10 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 29 | $18 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 26 | $39 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Empagliflozinbrand: Jardiance | 593 | 181 |
| Metformin Hcl | 590 | 201 |
| Dapagliflozin Propanediolbrand: Farxiga | 365 | 123 |
| Levothyroxine Sodium | 315 | 101 |
| Linagliptinbrand: Tradjenta | 230 | 67 |
| Pen Needle, Diabeticbrand: Ulticare Pen Needle | 178 | 69 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-24
- Last updated
- 2022-01-04
Frequently asked questions
- What is Chengyu Xu's NPI number?
- Chengyu Xu's National Provider Identifier (NPI) is 1669600086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chengyu Xu's specialty?
- Chengyu Xu is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Chengyu Xu located?
- Chengyu Xu's practice location on file with NPPES is 386 Gellert Blvd, Daly City, CA 94015-2611.
- What is Chengyu Xu's phone number?
- The practice phone number listed in the NPPES registry for Chengyu Xu is (650) 761-3500.
- Does Chengyu Xu accept Medicare?
- Chengyu Xu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chengyu Xu's NPI active?
- Yes — Chengyu Xu's NPI (1669600086) is active in the NPPES registry as of the last update on 2022-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.