Joseph Zhao, MD
NPI 1558545087 · Nephrology Physician · Chandler, AZ
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Zhao, MD is a Nephrology Physician provider in Chandler, AZ (NPI 1558545087).
Provider details
- NPI number
- 1558545087
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 47257 (AZ)
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
18 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
1,007 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 369 | $112 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 143 | $123 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 100 | $172 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 90 | $166 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 73 | $255 |
| Insertion of Needle And/Or Tube Into Hemodialysis Circuit and Balloon Dilation of Dialysis Segment With Review By Radiologist |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 48 | — |
| Furosemide | 37 | 11 |
| Amlodipine Besylate | 32 | 11 |
| Dapagliflozin Propanediolbrand: Farxiga | 29 | — |
| Allopurinol | 28 | — |
| Losartan Potassium | 28 | — |
| Lisinopril | 26 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,494 across 58 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
- 2007-12-19
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Frequently asked questions
- What is Joseph Zhao's NPI number?
- Joseph Zhao's National Provider Identifier (NPI) is 1558545087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Zhao's specialty?
- Joseph Zhao is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Zhao located?
- Joseph Zhao's practice location on file with NPPES is 600 S Dobson Rd, Chandler, AZ 85224.
- What is Joseph Zhao's phone number?
- The practice phone number listed in the NPPES registry for Joseph Zhao is (480) 857-2381.
- Does Joseph Zhao accept Medicare?
- Joseph Zhao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Zhao's NPI active?
- Yes — Joseph Zhao's NPI (1558545087) is active in the NPPES registry as of the last update on 2026-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.