Dr. Joseph Guan Zhao, MD
- Medicare services, 2024
- 1,007
- Medicare patients, 2024
- 429
- Part D claims, 2024
- 512
- MIPS score, 2024
- 88
- Hospital affiliations
- 6
- Practice address
- 2149 E Warner Rd, Tempe, AZ 85284
- Practice phone
- Call (480) 464-3851
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Central Mesa Dialysis Center
Tempe, Arizona
Find Dr. Zhao's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Joseph Guan Zhao is a nephrologist in Tempe, Arizona
Dr. Zhao practices at Central Mesa Dialysis Center in Tempe, Arizona.
Dr. Zhao's NPI, 1558545087, was assigned on December 19, 2007. Dr. Zhao graduated from Morehouse School of Medicine in 2007. Dr. Zhao holds Arizona license 47257.
- NPI
- 1558545087NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507081924
- NPI enumeration date
- December 19, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (480) 464-3851
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph Guan Zhao practices at Central Mesa Dialysis Center in Tempe, Arizona
Dr. Zhao's primary practice is Central Mesa Dialysis Center, at 2149 E Warner Rd, Tempe, AZ 85284 in Maricopa County. The practice phone is (480) 464-3851.
- Central Mesa Dialysis Center2149 E Warner Rd, Tempe, AZ 85284 · Maricopa CountyPhone(480) 464-3851
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joseph Guan Zhao is affiliated with 11 sites of care and 1 medical group
Dr. Zhao's primary practice is Central Mesa Dialysis Center in Tempe, Arizona. Dr. Zhao is also affiliated with Banner Desert Medical Center. The medical group on file is Arizona Kidney Disease & Hypertension Centers (AKDHC). Dmand AI also links Dr. Zhao to 5 more hospitals, 3 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph Guan Zhao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zhao practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Central Mesa Dialysis Center | Available with a free account |
| +10 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joseph Guan Zhao is one of 268 nephrologists in Arizona
Nephrology is Dr. Zhao's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Zhao is licensed in Arizona.
Specialties and state licenses
- Nephrology, ArizonaPrimary
Nephrologists near Dr. Zhao
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joseph Guan Zhao billed Medicare for 1,007 services in 2024
CMS data shows 1,007 Medicare services from Dr. Zhao across 11 procedure codes in 2024, for 429 Medicare patients. Medicare paid $118,926 for them.
Dr. Zhao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8732024: 77511%
- Tests and treatments
- 2023: 2112024: 12939%
- Surgery
- 2023: 702024: 8623%
- Other services
- 2023: 02024: 17
Where Dr. Zhao's Medicare services took place, 2024
- In an office41341%
- In a facility59459%
Dr. Zhao compared with the Arizona median for nephrologists, 2024
- Dr. Zhao
- Arizona median
- Medicare services
- 1,007vs 1,45931% below
- Medicare patients
- 429vs 4017% above
- Part D claims
- 391vs 84053% below
Medians across 272 nephrologists in Arizona with Dmand AI profiles that report each measure.
Dr. Zhao's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zhao and other nephrologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph Guan Zhao treated 429 Medicare patients in 2024, average age 73
CMS counts 429 Medicare patients who saw Dr. Zhao in 2024. The largest group is 75 to 84, with 152 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 23% are also on Medicaid. Their average risk score is 4.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Zhao's median patient age at 67, with 46% women.
Dr. Zhao's Medicare patients by age, 2024
Dr. Zhao's Medicare patients by sex, 2024
- Women21550%
- Men21450%
Chronic conditions among Dr. Zhao's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes60%
- Ischemic heart disease53%
- Heart failure47%
- Arthritis46%
- Atrial fibrillation40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zhao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women46%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph Guan Zhao wrote 512 Medicare Part D claims in 2024
In 2024, Dr. Zhao wrote 512 Medicare Part D claims for 116 patients. 80% of them were for generic drugs. CMS names the drug for 391 of them, across 17 drugs with 11 or more claims each, at $76,361 in total drug cost. In 2023, CMS named 470 claims across 16 drugs.
Dr. Zhao's Part D claims by kind of drug, 2024
- Generic412 claims80%
- Brand-name100 claims20%
Dr. Zhao's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Zhao's Part D claims, 2024
- Antibiotics6%31 of 512 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4702024: 39117%
Drugs named by CMS: 17 in 2024, 16 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Joseph Guan Zhao scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Zhao for performance year 2024, reported as part of a group. Dr. Zhao accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zhao as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Zhao's MIPS scores, performance year 2024
- 88of 100Final score
- 67.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Joseph Guan Zhao received $8,096 in industry payments from 2016 to 2025
CMS Open Payments shows 288 general payments to Dr. Zhao from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 82% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,107.
General payments to Dr. Zhao by program year, 2016 to 2025
General payments to Dr. Zhao by kind, 2016 to 2025
- Food and beverage$6,64282%
- Education$1,05513%
- Speaker and faculty fees$4005%
Companies that paid Dr. Zhao the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph Guan Zhao graduated from Morehouse School of Medicine
Dr. Zhao graduated from Morehouse School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph Guan Zhao's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Joseph Guan Zhao
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Joseph Guan Zhao's NPI number?
Dr. Joseph Guan Zhao's NPI number is 1558545087. It was assigned on December 19, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph Guan Zhao?
Dr. Joseph Guan Zhao is a nephrologist in Tempe, Arizona. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Joseph Guan Zhao practice?
Dr. Zhao practices at 2149 E Warner Rd, Tempe, AZ 85284. Dr. Zhao's primary practice is Central Mesa Dialysis Center in Tempe, Arizona. Dmand AI also links Dr. Zhao to 5 hospitals, 3 dialysis centers and 1 group practice or clinic.
What is Dr. Joseph Guan Zhao's office phone number?
The practice phone on file for Dr. Zhao is (480) 464-3851.
What is Dr. Joseph Guan Zhao's medical license number?
Dr. Zhao holds Arizona license 47257.
Which hospitals is Dr. Joseph Guan Zhao affiliated with?
Dr. Zhao is affiliated with Banner Desert Medical Center. Dmand AI links Dr. Zhao to 5 more hospitals.
What medical group is Dr. Joseph Guan Zhao part of?
Dr. Zhao is linked to Arizona Kidney Disease & Hypertension Centers (AKDHC).
Does Dr. Joseph Guan Zhao accept Medicare?
Yes. CMS data shows Dr. Zhao billed Medicare for 1,007 services in 2024, and Dr. Zhao accepts Medicare assignment.
Does Dr. Joseph Guan Zhao offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zhao as offering telehealth services.
What is Dr. Joseph Guan Zhao's MIPS score?
Dr. Zhao's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Joseph Guan Zhao see?
CMS counts 429 Medicare patients who saw Dr. Zhao in 2024, with an average age of 73.
What services does Dr. Joseph Guan Zhao bill to Medicare?
In 2024, Dr. Zhao's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99214) and office visit, established patient (99215).
Where did Dr. Joseph Guan Zhao go to medical school?
Dr. Zhao graduated from Morehouse School of Medicine in 2007.
What drugs does Dr. Joseph Guan Zhao prescribe most?
In 2024 Medicare Part D data, Dr. Zhao's most prescribed drugs by claims were Calcitriol, Furosemide and Amlodipine Besylate.
Has Dr. Joseph Guan Zhao received payments from drug or device companies?
CMS Open Payments shows $8,096 in general payments to Dr. Zhao from 32 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Joseph Guan Zhao been practicing?
Dr. Zhao graduated from medical school in 2007, 19 years ago.
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