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Dr. Sucharit S. Joshi, M.D.

Nephrology (Kidney) (Nephrology Physician)

  • Medicare participating

At a glance

Years since graduation
21
In the NPI registry since
2007
Medicare patients seen, 2024
521

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

  • 2005Medical school: Icahn School of Medicine at Mount Sinai
  • 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

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
    NH license 15305 · ME license 018840

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Nephrology (Kidney) per capita by county →

Where they work

Hospitals

Medical groups

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
521
Services billed
1,559
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes923254
Established patient office or other outpatient visit, 30-39 minutes265192
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes259130
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes174163
Hemodialysis procedure with physician evaluation10048
Established patient office or other outpatient visit, 20-29 minutes7070
Established patient office or other outpatient visit, 40-54 minutes6542
Home dialysis services per month (20 years or older)4314
Dialysis services, 4 or more physician visits per month (20 years or older)4218
New patient office or other outpatient visit, 45-59 minutes3434

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

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 4 industry-funded studies in 2025, from 4 companies. The companies reported $521,858 in research payments for these studies, mostly to the institutions running them.

  • A multicenter, international, randomized, double-blind, placebo-controlled clinical trial of the aldosterone synthase inhibitor BI 690517 in combination with empagliflozin in patients with chronic kidney disease
    Boehringer Ingelheim International GmbH
  • Combined Dose-Finding and CV Outcomes Study With CSL300 (Clazakizumab) in Adult Subjects With ESKD Undergoing Dialysis (POSIBIL6ESKD)
    Csl Behring · Recruiting · NCT05485961
  • A multicenter, international, randomized, double-blind, placebo-controlled clinical trial of the aldosterone synthase inhibitor BI 690517 in combination with empagliflozin in patients with chronic kidney disease
    Boehringer Ingelheim Pharma GmbH & Co.kg
  • Zilebesiran as Add-on Therapy in Patients With High Cardiovascular Risk and Hypertension Not Adequately Controlled by Standard of Care Antihypertensive Medications (KARDIA-3)
    Alnylam Pharmaceuticals Inc.

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.

Other Nephrology (Kidney) clinicians in Portsmouth

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 20, 2012), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1114045184. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.