Dr. John Middleton
Nephrology (Kidney) (Nephrology Physician)
- Medicare participating
At a glance
- Years since graduation
- 43
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 300
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Nephrology Physician primary
NC license 30418
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Duke University Hospital Durham, NC
- Duke Regional Hospital Durham, NC
Medical groups
- Duke Health Integrated Practice, Inc (3,185 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 300
- Services billed
- 816
- Patients’ average age
- 68
| Service | Times | Patients |
|---|---|---|
| Dialysis procedure including 1 evaluation | 185 | 48 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 170 | 73 |
| Hemodialysis procedure with physician evaluation | 164 | 77 |
| Dialysis services, 4 or more physician visits per month (20 years or older) | 153 | 47 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 49 | 35 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 41 | 41 |
| Dialysis services, 2-3 physician visits per month (20 years or older) | 37 | 20 |
| Established patient office or other outpatient visit, 20-29 minutes | 33 | 30 |
| Established patient office or other outpatient visit, 30-39 minutes | 32 | 30 |
| New patient office or other outpatient visit, 60-74 minutes | 21 | 21 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Jardiance (empagliflozin) Other prescribers in Durham, NC | 62 |
| Carvedilol Other prescribers in Durham, NC | 50 |
| Furosemide Other prescribers in Durham, NC | 49 |
| Amlodipine Besylate Other prescribers in Durham, NC | 47 |
| Calcitriol Other prescribers in Durham, NC | 41 |
| Losartan Potassium Other prescribers in Durham, NC | 39 |
| Torsemide Other prescribers in Durham, NC | 36 |
| Farxiga (dapagliflozin propanediol) Other prescribers in Durham, NC | 27 |
| Lisinopril Other prescribers in Durham, NC | 24 |
| Hydrochlorothiazide Other prescribers in Durham, NC | 19 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $41,757 in research payments for these studies, mostly to the institutions running them.
- Combined Dose-Finding and CV Outcomes Study With CSL300 (Clazakizumab) in Adult Subjects With ESKD Undergoing Dialysis (POSIBIL6ESKD)
Csl Behring · Recruiting · NCT05485961 - The Effect of Retatrutide Once Weekly on Cardiovascular Outcomes and Kidney Outcomes in Adults Living With Obesity (TRIUMPH-Outcomes)
Eli Lilly and Company · Active, not recruiting · NCT06383390
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.