Mayo Clin Proc Innov Qual Outcomes
Dr. Karthik Gnanapandithan, MD
- Medicare services, 2024
- 433
- Medicare patients, 2024
- 247
- Part D claims, 2024
- 152
- Publications
- 32
- Industry payments
- $490
- Practice address
- 4500 San Pablo S Rd, Jacksonville, FL 32224
- Practice phone
- Call (904) 953-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Building and Hospital - Florida
Jacksonville, Florida
Find Dr. Gnanapandithan'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. Karthik Gnanapandithan is a hospitalist in Jacksonville, Florida
Dr. Gnanapandithan practices at Mayo Building and Hospital - Florida in Jacksonville, Florida.
Dr. Gnanapandithan's NPI, 1326327651, was assigned on August 4, 2011. Dr. Gnanapandithan graduated from Madurai Medical College in 2007. Dr. Gnanapandithan holds Florida license ME143050.
- NPI
- 1326327651NPI Registry (opens in a new tab)
- NPI enumeration date
- August 4, 2011
- NPI status
- Active
- Practice phone
- (904) 953-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Karthik Gnanapandithan practices at Mayo Building and Hospital - Florida in Jacksonville, Florida
Dr. Gnanapandithan's primary practice is Mayo Building and Hospital - Florida, at 4500 San Pablo S Rd, Jacksonville, FL 32224 in Duval County. The practice phone is (904) 953-2000.
- Mayo Building and Hospital - Florida4500 San Pablo S Rd, Jacksonville, FL 32224 · Duval CountyPhone(904) 953-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karthik Gnanapandithan is affiliated with 1 site of care and 2 medical groups
Dr. Gnanapandithan's primary practice is Mayo Building and Hospital - Florida in Jacksonville, Florida. The medical group on file is Mayo Clinic Jacksonville. Dmand AI also links Dr. Gnanapandithan to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karthik Gnanapandithan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gnanapandithan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Building and Hospital - Florida | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karthik Gnanapandithan is one of 1,637 hospitalists in Florida
Hospitalist is Dr. Gnanapandithan's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Gnanapandithan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Gnanapandithan's licenses on file in 6 states: Florida, Arizona, Wisconsin, Connecticut, Massachusetts and Rhode Island.
Specialties and state licenses
- Hospitalist, FloridaPrimary
- Arizona license
- Wisconsin license
- Connecticut license
- Massachusetts license
- Rhode Island license
Clinical focus
Dmand AI lists acute respiratory failure, anemia, bile duct problems, cardiac arrhythmia, cellulitis, congestive heart failure, electrolyte disorders and gastrointestinal inflammation among the conditions Dr. Gnanapandithan treats.
Hospitalists near Dr. Gnanapandithan
Counts of hospitalists 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. Karthik Gnanapandithan billed Medicare for 433 services in 2024
CMS data shows 433 Medicare services from Dr. Gnanapandithan across 6 procedure codes in 2024, for 247 Medicare patients. Medicare paid $35,552 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gnanapandithan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4552024: 4335%
Dr. Gnanapandithan compared with the Florida median for hospitalists, 2024
- Dr. Gnanapandithan
- Florida median
- Medicare services
- 433vs 54320% below
- Medicare patients
- 247vs 243Close to median
- Part D claims
- 25vs 11278% below
Medians across 1,516 hospitalists in Florida with Dmand AI profiles that report each measure.
Dr. Gnanapandithan'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. Karthik Gnanapandithan treated 247 Medicare patients in 2024, average age 76
CMS counts 247 Medicare patients who saw Dr. Gnanapandithan in 2024. The largest group is 75 to 84, with 90 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 3.03, 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. Gnanapandithan's median patient age at 75, with 71% women.
Dr. Gnanapandithan's Medicare patients by age, 2024
Dr. Gnanapandithan's Medicare patients by sex, 2024
- Women11045%
- Men13755%
Chronic conditions among Dr. Gnanapandithan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease60%
- Arthritis58%
- Ischemic heart disease54%
- Heart failure49%
- Diabetes48%
- Anxiety46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gnanapandithan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women71%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karthik Gnanapandithan wrote 152 Medicare Part D claims in 2024
In 2024, Dr. Gnanapandithan wrote 152 Medicare Part D claims for 73 patients. 93% of them were for generic drugs. CMS names the drug for 25 of them, across 2 drugs with 11 or more claims each, at $304 in total drug cost.
Dr. Gnanapandithan's Part D claims by kind of drug, 2024
- Generic142 claims93%
- Brand-name and other10 claims7%
Dr. Gnanapandithan'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. Gnanapandithan's Part D claims, 2024
- Antibiotics32%48 of 152 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
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Dr. Karthik Gnanapandithan has 32 publications on record
Dmand AI links 32 papers to Dr. Gnanapandithan, published from 2011 to 2025. 2025 was the busiest year, with 5. The most frequent topics are Tomography, X-Ray Computed, Diabetes Mellitus, Type 2 and Primary Prevention. Dr. Gnanapandithan has published most often in ACG Case Rep J. Dr. Gnanapandithan's most frequent co-authors are Aleksandra Murawska Baptista, MD, Melissa Pantano Cortes, MD and Jennifer Brooke Cowart, MD.
Dr. Gnanapandithan's papers by year, 2013 to 2025
Topics Dr. Gnanapandithan writes about most
- Tomography, X-Ray Computed
- Diabetes Mellitus, Type 2
- Primary Prevention
- Rural Population
Dr. Gnanapandithan's most frequent co-authors
- Aleksandra Murawska Baptista, MD4 shared papers
- Melissa Pantano Cortes, MD2 shared papers
- Jennifer Brooke Cowart, MD2 shared papers
Recent publications by Dr. Gnanapandithan
Mayo Clin Proc Innov Qual Outcomes
See who Dr. Gnanapandithan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gnanapandithan works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Karthik Gnanapandithan received $490 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Gnanapandithan from 2 drug and device companies from 2024 to 2025. Grants make up the largest share, 79% of the total. Cook Medical LLC paid the most, $387.
General payments to Dr. Gnanapandithan by program year, 2024 to 2025
General payments to Dr. Gnanapandithan by kind, 2024 to 2025
- Grants$38779%
- Food and beverage$10321%
Companies that paid Dr. Gnanapandithan the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karthik Gnanapandithan graduated from Madurai Medical College
Dr. Gnanapandithan graduated from Madurai Medical College in 2007.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Karthik Gnanapandithan accepts plans from 12 insurance carriers
Dr. Gnanapandithan is in network with 12 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- United Healthcare
- Elevance
- Aetna
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Blue Cross Blue Shield of Michigan
- +4 more carriersWith a free account
Plan types Dr. Gnanapandithan accepts, by number of carriers
- HMO6
- PPO5
- Medicare3
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Karthik Gnanapandithan'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Karthik Gnanapandithan
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. Karthik Gnanapandithan's NPI number?
Dr. Karthik Gnanapandithan's NPI number is 1326327651. It was assigned on August 4, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Karthik Gnanapandithan?
Dr. Karthik Gnanapandithan is a hospitalist in Jacksonville, Florida. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Karthik Gnanapandithan practice?
Dr. Gnanapandithan practices at 4500 San Pablo S Rd, Jacksonville, FL 32224. Dr. Gnanapandithan's primary practice is Mayo Building and Hospital - Florida in Jacksonville, Florida. Dmand AI also links Dr. Gnanapandithan to 1 medical group.
What is Dr. Karthik Gnanapandithan's office phone number?
The practice phone on file for Dr. Gnanapandithan is (904) 953-2000.
What is Dr. Karthik Gnanapandithan's medical license number?
Dr. Gnanapandithan holds Florida license ME143050, one of the licenses on file in 6 states.
Which states has Dr. Karthik Gnanapandithan been licensed in?
Dmand AI has state licenses on file for Dr. Gnanapandithan in Florida (2019 to 2026), Arizona (2021 to 2025), Wisconsin (2021 to 2025), Connecticut (2013 to 2022), Massachusetts (2011 to 2014) and Rhode Island (2013 to 2014).
What medical group is Dr. Karthik Gnanapandithan part of?
Dr. Gnanapandithan is linked to Mayo Clinic Jacksonville. Dmand AI links Dr. Gnanapandithan to 1 more medical group.
Does Dr. Karthik Gnanapandithan accept Medicare?
Yes. CMS data shows Dr. Gnanapandithan billed Medicare for 433 services in 2024.
How many Medicare patients does Dr. Karthik Gnanapandithan see?
CMS counts 247 Medicare patients who saw Dr. Gnanapandithan in 2024, with an average age of 76.
Is Dr. Karthik Gnanapandithan board certified?
Yes. Dr. Gnanapandithan is board certified in internal medicine by the American Board of Internal Medicine.
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What services does Dr. Karthik Gnanapandithan bill to Medicare?
In 2024, Dr. Gnanapandithan's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. Karthik Gnanapandithan go to medical school?
Dr. Gnanapandithan graduated from Madurai Medical College in 2007.
What drugs does Dr. Karthik Gnanapandithan prescribe most?
In 2024 Medicare Part D data, Dr. Gnanapandithan's most prescribed drugs by claims were Cefdinir and Potassium Chloride.
Has Dr. Karthik Gnanapandithan received payments from drug or device companies?
CMS Open Payments shows $490 in general payments to Dr. Gnanapandithan from 2 companies from 2024 to 2025. The largest total came from Cook Medical LLC.
How long has Dr. Karthik Gnanapandithan been practicing?
Dr. Gnanapandithan graduated from medical school in 2007, 19 years ago.
Does Dr. Karthik Gnanapandithan do research?
Dmand AI links 32 publications to Dr. Gnanapandithan, published from 2011 to 2025.
Who does Dr. Karthik Gnanapandithan publish with?
Dr. Gnanapandithan's most frequent co-authors are Aleksandra Murawska Baptista, MD (4 shared papers), Melissa Pantano Cortes, MD (2 shared papers) and Jennifer Brooke Cowart, MD (2 shared papers).
What insurance does Dr. Karthik Gnanapandithan accept?
Dr. Gnanapandithan is in network with 12 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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