Michael Chau, D.O.
NPI 1588036719 · Nephrology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Chau, D.O. is a Nephrology Physician provider in San Diego, CA (NPI 1588036719).
Provider details
- NPI number
- 1588036719
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A18669 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 108 | 50 |
| Amlodipine Besylate | 95 | 53 |
| Lisinopril | 85 | 42 |
| Furosemide | 80 | 40 |
| Sevelamer Carbonate | 61 | 30 |
| Hydralazine Hcl | 59 | 29 |
| Potassium Chloride | 53 | 23 |
| Calcitriol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$329 across 3 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
- 2015-10-27
- Last updated
- 2023-10-27
- Certified
- 2023-10-19
Frequently asked questions
- What is Michael Chau's NPI number?
- Michael Chau's National Provider Identifier (NPI) is 1588036719, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Chau's specialty?
- Michael Chau is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Chau located?
- Michael Chau's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Michael Chau's phone number?
- The practice phone number listed in the NPPES registry for Michael Chau is (877) 236-0333.
- Does Michael Chau accept Medicare?
- Michael Chau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Chau's NPI active?
- Yes — Michael Chau's NPI (1588036719) is active in the NPPES registry as of the last update on 2023-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.