Dr. Zhongqiu John Zhang, MD
- Medicare services, 2024
- 531
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 342
- Hospital affiliations
- 2
- Industry payments
- $85,466
- Practice address
- 64 Robbins St, Waterbury, CT 06721
- Practice phone
- Call (203) 573-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zhang's professional email, personal email and mobile number
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Dr. Zhongqiu John Zhang is a general surgeon in Waterbury, Connecticut
Dr. Zhang practices at UConn Health Waterbury Hospital in Waterbury, Connecticut, part of State of Connecticut.
Dr. Zhang's NPI, 1679725816, was assigned on October 21, 2008. Dr. Zhang holds Connecticut license 048337.
- NPI
- 1679725816NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284750589
- NPI enumeration date
- October 21, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 573-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zhongqiu John Zhang practices at UConn Health Waterbury Hospital in Waterbury, Connecticut
Dr. Zhang's primary practice is UConn Health Waterbury Hospital, at 64 Robbins St, Waterbury, CT 06721 in New Haven County. The practice phone is (203) 573-6000.
- UConn Health Waterbury Hospital64 Robbins St, Waterbury, CT 06721 · New Haven CountyPhone(203) 573-6000
Source: Dmand AI Affiliation Data
Dr. Zhongqiu John Zhang is affiliated with 4 sites of care and 2 medical groups
Dr. Zhang's primary practice is UConn Health Waterbury Hospital in Waterbury, Connecticut, part of State of Connecticut. Dr. Zhang is also affiliated with Griffin Hospital. The medical group on file is Manchester Memorial Hospital. Dmand AI also links Dr. Zhang to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zhongqiu John Zhang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zhang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UConn Health Waterbury Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zhongqiu John Zhang is one of 303 general surgeons in Connecticut
Surgery is Dr. Zhang's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Zhang is licensed in Connecticut.
Specialties and state licenses
- Surgery, ConnecticutPrimary
General surgeons near Dr. Zhang
Counts of general surgeons 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. Zhongqiu John Zhang billed Medicare for 531 services in 2024
CMS data shows 531 Medicare services from Dr. Zhang across 14 procedure codes in 2024, for 220 Medicare patients. Medicare paid $51,856 for them.
Dr. Zhang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3242024: 41127%
- Surgery
- 2023: 812024: 9214%
- Other services
- 2023: 132024: 28115%
Where Dr. Zhang's Medicare services took place, 2024
- In an office17934%
- In a facility35266%
Dr. Zhang compared with the Connecticut median for general surgeons, 2024
- Dr. Zhang
- Connecticut median
- Medicare services
- 531vs 1094.9 times
- Medicare patients
- 220vs 952.3 times
- Part D claims
- 217vs 258.7 times
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Zhang'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Zhongqiu John Zhang treated 220 Medicare patients in 2024, average age 73
CMS counts 220 Medicare patients who saw Dr. Zhang in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.60, 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. Zhang's median patient age at 60, with 51% women.
Dr. Zhang's Medicare patients by age, 2024
Dr. Zhang's Medicare patients by sex, 2024
- Women11954%
- Men10146%
Chronic conditions among Dr. Zhang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes40%
- Ischemic heart disease37%
- Anxiety33%
- Mood disorders29%
- Atrial fibrillation25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zhang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women51%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Zhongqiu John Zhang wrote 342 Medicare Part D claims in 2024
In 2024, Dr. Zhang wrote 342 Medicare Part D claims for 96 patients. 80% of them were for generic drugs. CMS names the drug for 217 of them, across 9 drugs with 11 or more claims each, at $24,121 in total drug cost. In 2023, CMS named 168 claims across 7 drugs.
Dr. Zhang's Part D claims by kind of drug, 2024
- Generic274 claims80%
- Brand-name and other68 claims20%
Dr. Zhang'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. Zhang's Part D claims, 2024
- Opioids10%33 of 342 claims
- Antibiotics25%86 of 342 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: 1682024: 21729%
Drugs named by CMS: 9 in 2024, 7 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. Zhongqiu John Zhang ranks in the 72nd percentile for colonoscopy in Medicare
Dr. Zhang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 72 procedures of colonoscopy by Dr. Zhang, more than 72% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Zhang ranks in Medicare procedure volume
- Colonoscopy
- 72nd percentile72 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 46th percentile15 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Zhongqiu John Zhang received $85,466 in industry payments from 2016 to 2025
CMS Open Payments shows 65 general payments to Dr. Zhang from 31 drug and device companies from 2016 to 2025. Royalties and licenses make up the largest share, 88% of the total. Davol Inc. paid the most, $82,250.
General payments to Dr. Zhang by program year, 2016 to 2025
General payments to Dr. Zhang by kind, 2016 to 2025
- Royalties and licenses$75,00088%
- Honoraria$7,1788%
- Food and beverage$1,2952%
- Education$1,0001%
- Other$9941%
Companies that paid Dr. Zhang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zhongqiu John Zhang'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Zhongqiu John Zhang
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. Zhongqiu John Zhang's NPI number?
Dr. Zhongqiu John Zhang's NPI number is 1679725816. It was assigned on October 21, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Zhongqiu John Zhang?
Dr. Zhongqiu John Zhang is a general surgeon in Waterbury, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Zhongqiu John Zhang practice?
Dr. Zhang practices at 64 Robbins St, Waterbury, CT 06721. Dr. Zhang's primary practice is UConn Health Waterbury Hospital in Waterbury, Connecticut, part of State of Connecticut. Dmand AI also links Dr. Zhang to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. Zhongqiu John Zhang's office phone number?
The practice phone on file for Dr. Zhang is (203) 573-6000.
What is Dr. Zhongqiu John Zhang's medical license number?
Dr. Zhang holds Connecticut license 048337.
Which hospitals is Dr. Zhongqiu John Zhang affiliated with?
Dr. Zhang practices at UConn Health Waterbury Hospital in Waterbury, Connecticut. Dr. Zhang is also affiliated with Griffin Hospital.
What medical group is Dr. Zhongqiu John Zhang part of?
Dr. Zhang is linked to Manchester Memorial Hospital. Dmand AI links Dr. Zhang to 1 more medical group.
Does Dr. Zhongqiu John Zhang accept Medicare?
Yes. CMS data shows Dr. Zhang billed Medicare for 531 services in 2024, and Dr. Zhang accepts Medicare assignment.
How many Medicare patients does Dr. Zhongqiu John Zhang see?
CMS counts 220 Medicare patients who saw Dr. Zhang in 2024, with an average age of 73.
What services does Dr. Zhongqiu John Zhang bill to Medicare?
In 2024, Dr. Zhang's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and hospital inpatient care (99233).
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What drugs does Dr. Zhongqiu John Zhang prescribe most?
In 2024 Medicare Part D data, Dr. Zhang's most prescribed drugs by claims were Linzess, Metronidazole and Neomycin Sulfate.
Has Dr. Zhongqiu John Zhang received payments from drug or device companies?
CMS Open Payments shows $85,466 in general payments to Dr. Zhang from 31 companies from 2016 to 2025. The largest total came from Davol Inc.
How long has Dr. Zhongqiu John Zhang been practicing?
Dr. Zhang graduated from medical school in 1989, 37 years ago.
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