John Sperati
Experienced in Low Potassium Level

Dr. John Sperati

Nephrology
Johns Hopkins Medicine
Johns Hopkins Outpatient Center
Baltimore, MD 
Offers Telehealth

Experienced in Low Potassium Level
Johns Hopkins Medicine
Johns Hopkins Outpatient Center
Baltimore, MD 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Dr. C. John Sperati is an Associate Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include renal medicine. Dr. Sperati is Director of the Glomerular Diseases Fellowship Program since 2023 and formerly directed the Nephrology Fellowship Training Program from 2019 - 2025. He was the long-serving Firm Faculty Leader of the Barker Firm and has held leadership positions within the Osler Medical Residency training program. In addition, he co-directs the Johns Hopkins Osler Learning Initiative which brings the principles of medical residency training to executive education worldwide. He obtained his medical degree from The Pennsylvania State University College of Medicine and a Master in Health Science from the Johns Hopkins Bloomberg School of Public Health. He completed an internship and residency in Internal Medicine at the Johns Hopkins Hospital, followed by a year as an Assistant Chief of Service (chief resident). He subsequently pursued subspecialty training in nephrology at the Johns Hopkins Hospital and joined the faculty in the Division of Nephrology. Dr. Sperati’s clinical interests are in thrombotic microangiopathy including atypical hemolytic uremic syndrome (aHUS), complement-mediated kidney diseases including C3 glomerulopathy, glomerular disease such as glomerulonephritis (e.g., IgA nephropathy, MPGN) and nephrotic syndromes (e.g., FSGS, membranous, minimal change, amyloidosis, and others), and secondary and resistant hypertension (e.g., fibromuscular dysplasia, atherosclerotic renal arterial disease, hyperaldosteronism, and genetic hypertensive syndromes). He is the site principal investigator for clinical trials in glomerular disease, serves on editorial boards, and chairs the approval committee of the Longitudinal Knowledge Assessment for nephrology for the American Board of Internal Medicine. His clinical acumen and educational contributions have been recognized by induction into the Miller Coulson Academy of Clinical Excellence as well as the American Society of Nephrology Distinguished Educator Award in 2020. He has been recognized as a physician resource through the Atypical HUS Foundation, a NephCure glomerular disease specialist, an IgA Nephropathy Foundation specialist, and a Baltimore TopDoc. He is registered with the Florida Department of Health to perform telehealth services for patients in Florida.

Dr. Sperati is rated as an Experienced provider by MediFind in the treatment of Low Potassium Level. His top areas of expertise are Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Hemolytic-Uremic Syndrome, Glomerulonephritis, and Kidney Transplant.

His clinical research consists of co-authoring 75 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 1 article in the study of Low Potassium Level.

Residency
Johns Hopkins University School of Medicine, Medicine, 2003
Specialties
Nephrology
Licenses
Internal Medicine in MD
Board Certifications
American Board Of Internal Medicine
Fellowships
Johns Hopkins University School of Medicine, Nephrology, 2007
Johns Hopkins University School of Medicine, Nephrology, 2004
Hospital Affiliations
Sibley Memorial Hospital
The Johns Hopkins Hospital
Johns Hopkins Bayview Medical Center
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Commonwealth Care Alliance
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
First Health
  • INSURANCE PLAN
  • MEDICARE PDP
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Johns Hopkins Healthcare
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE-MEDICAID PLAN
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 15 Less Insurance Carriers -

Locations

Johns Hopkins Outpatient Center
Floor 7, Baltimore, MD 21287
Call: 410-955-0670

Additional Areas of Focus

Dr. Sperati has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

C3 Glomerulopathy
IgA Nephropathy

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


75 Total Publications

Cardiovascular and Thromboembolic Events in Children and Adults With Glomerular Disease: Findings From the Cure GlomeruloNephropathy (CureGN) Network.
Cardiovascular and Thromboembolic Events in Children and Adults With Glomerular Disease: Findings From the Cure GlomeruloNephropathy (CureGN) Network.
Journal: Kidney medicine
Published: June 13, 2025
View All 75 Publications
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Dr. Mohamad Hanouneh is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include renal medicine. Dr. Hanouneh grew up in Syria and completed his medical school in Tishreen University in Latakia, Syria. He completed Internal Medicine Residency training at Cleveland Clinic, and Nephrology Fellowship at Johns Hopkins. Dr. Hanouneh currently serves as a part-time faculty in the Division of Nephrology at Johns Hopkins. He also works in the Nephrology Center of Maryland covering Good Samaritan and Upper Chesapeake Hospitals. Dr. Hanouneh has a passion in medical education. He runs the nephrology board review course and participates in Genes to Society Course of Renal Physiology, which is given to the medical students at Johns Hopkins University School of Medicine. His area of interests are electrolytes disorders, diabetic kidney disease and nephrolithiasis. Dr. Hanouneh is rated as a Distinguished provider by MediFind in the treatment of Low Potassium Level. His top areas of expertise are Low Potassium Level, End-Stage Renal Disease (ESRD), Chronic Kidney Disease, and High Potassium Level.

Distinguished in Low Potassium Level
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 (4.3 miles away)
410-706-2653
Languages Spoken:
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Arohan Subramanya is a Nephrologist in Baltimore, Maryland. Dr. Subramanya is rated as an Advanced provider by MediFind in the treatment of Low Potassium Level. His top areas of expertise are Low Potassium Level, Bartter Syndrome, Low Sodium Level, and Fabry Disease.

Distinguished in Low Potassium Level
Dr. Dhruval H. Patel
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 (54.4 miles away)
302-722-8800
Languages Spoken:
English, Hindi
See accepted insurances
Accepting New Patients
Offers Telehealth

Dhruval Patel is a Nephrologist in Newark, Delaware. Dr. Patel is rated as a Distinguished provider by MediFind in the treatment of Low Potassium Level. His top areas of expertise are Acute Kidney Failure, Acute Tubular Necrosis, Necrosis, and Low Sodium Level. Dr. Patel is currently accepting new patients.

VIEW MORE LOW POTASSIUM LEVEL DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Sperati's expertise for a condition
ConditionClose
    • Distinguished
    • Atypical Hemolytic Uremic Syndrome (aHUS)
      Dr. Sperati is
      Distinguished
      . Learn about Atypical Hemolytic Uremic Syndrome (aHUS).
      See more Atypical Hemolytic Uremic Syndrome (aHUS) experts
    • Chronic Kidney Disease
      Dr. Sperati is
      Distinguished
      . Learn about Chronic Kidney Disease.
      See more Chronic Kidney Disease experts
    • D-Plus Hemolytic Uremic Syndrome
      Dr. Sperati is
      Distinguished
      . Learn about D-Plus Hemolytic Uremic Syndrome.
      See more D-Plus Hemolytic Uremic Syndrome experts
    • Glomerulonephritis
      Dr. Sperati is
      Distinguished
      . Learn about Glomerulonephritis.
      See more Glomerulonephritis experts
    • Hemolytic-Uremic Syndrome
      Dr. Sperati is
      Distinguished
      . Learn about Hemolytic-Uremic Syndrome.
      See more Hemolytic-Uremic Syndrome experts
    • Advanced
    • Acute Arterial Occlusion of Kidney
      Dr. Sperati is
      Advanced
      . Learn about Acute Arterial Occlusion of Kidney.
      See more Acute Arterial Occlusion of Kidney experts
    • Acute Kidney Failure
      Dr. Sperati is
      Advanced
      . Learn about Acute Kidney Failure.
      See more Acute Kidney Failure experts
    • End-Stage Renal Disease (ESRD)
      Dr. Sperati is
      Advanced
      . Learn about End-Stage Renal Disease (ESRD).
      See more End-Stage Renal Disease (ESRD) experts
    • Focal Segmental Glomerulosclerosis
      Dr. Sperati is
      Advanced
      . Learn about Focal Segmental Glomerulosclerosis.
      See more Focal Segmental Glomerulosclerosis experts
    • IgA Nephropathy
      Dr. Sperati is
      Advanced
      . Learn about IgA Nephropathy.
      See more IgA Nephropathy experts
    • Membranoproliferative Glomerulonephritis
      Dr. Sperati is
      Advanced
      . Learn about Membranoproliferative Glomerulonephritis.
      See more Membranoproliferative Glomerulonephritis experts
    View All 10 Advanced Conditions
    • Experienced
    • Cytomegalic Inclusion Disease
      Dr. Sperati is
      Experienced
      . Learn about Cytomegalic Inclusion Disease.
      See more Cytomegalic Inclusion Disease experts
    • Cytomegalovirus Infection
      Dr. Sperati is
      Experienced
      . Learn about Cytomegalovirus Infection.
      See more Cytomegalovirus Infection experts
    • Fabry Disease
      Dr. Sperati is
      Experienced
      . Learn about Fabry Disease.
      See more Fabry Disease experts
    • Feingold Syndrome
      Dr. Sperati is
      Experienced
      . Learn about Feingold Syndrome.
      See more Feingold Syndrome experts
    • Goodpasture Syndrome
      Dr. Sperati is
      Experienced
      . Learn about Goodpasture Syndrome.
      See more Goodpasture Syndrome experts
    • High Potassium Level
      Dr. Sperati is
      Experienced
      . Learn about High Potassium Level.
      See more High Potassium Level experts
    View All 19 Experienced Conditions
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