Dr. John Karl Whalen, DO
- Part D claims, 2024
- 193
- Hospital affiliations
- 3
- Industry payments
- $1,186
- Medical group
- 1
- State license
- 1
- Practice address
- 800 Prudential Dr, Jacksonville, FL 32207
- Practice phone
- Call (904) 202-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Whalen's professional email, personal email and mobile number
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Dr. John Karl Whalen is an epilepsy physician in Jacksonville, Florida
Dr. Whalen practices at Baptist Medical Center Jacksonville in Jacksonville, Florida, part of Baptist Health.
Dr. Whalen's NPI, 1093337057, was assigned on May 13, 2020. Dr. Whalen holds Florida license OS21301.
- NPI
- 1093337057NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860814415
- NPI enumeration date
- May 13, 2020
- NPI status
- Active
- Practice phone
- (904) 202-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Karl Whalen practices at Baptist Medical Center Jacksonville in Jacksonville, Florida
Dr. Whalen's primary practice is Baptist Medical Center Jacksonville, at 800 Prudential Dr, Jacksonville, FL 32207 in Duval County. The practice phone is (904) 202-2000.
- Baptist Medical Center Jacksonville800 Prudential Dr, Jacksonville, FL 32207 · Duval CountyPhone(904) 202-2000
Source: Dmand AI Affiliation Data
Dr. John Karl Whalen is affiliated with 5 sites of care and 1 medical group
Dr. Whalen's primary practice is Baptist Medical Center Jacksonville in Jacksonville, Florida, part of Baptist Health. Dr. Whalen is also affiliated with Brooks Rehabilitation Hospital - University Campus. The medical group on file is Baptist Neurology. Dmand AI also links Dr. Whalen to 1 more hospital, 1 group practice or clinic and 1 home health agency, 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. John Karl Whalen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Whalen practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baptist Medical Center Jacksonville | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Karl Whalen is one of 22 epilepsy physicians in Florida
Epilepsy is Dr. Whalen's primary specialty in the NPI Registry, under taxonomy code 2084E0001X. Dr. Whalen is licensed in Florida.
Specialties and state licenses
- Epilepsy, FloridaPrimary
Epilepsy physicians near Dr. Whalen
Counts of epilepsy physicians 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. John Karl Whalen's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Whalen's median patient age at 71, with 60% women.
Dr. Whalen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. John Karl Whalen wrote 193 Medicare Part D claims in 2024
In 2024, Dr. Whalen wrote 193 Medicare Part D claims for 34 patients. 96% of them were for generic drugs. CMS names the drug for 105 of them, across 6 drugs with 11 or more claims each, at $1,490 in total drug cost.
Dr. Whalen's Part D claims by kind of drug, 2024
- Generic186 claims96%
- Brand-name and other7 claims4%
Dr. Whalen'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.
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. John Karl Whalen received $1,186 in industry payments in 2025
CMS Open Payments shows 51 general payments to Dr. Whalen from 21 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $139.
Companies that paid Dr. Whalen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Karl Whalen'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. John Karl Whalen
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. John Karl Whalen's NPI number?
Dr. John Karl Whalen's NPI number is 1093337057. It was assigned on May 13, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. John Karl Whalen?
Dr. John Karl Whalen is an epilepsy physician in Jacksonville, Florida. The primary specialty in the NPI Registry is Epilepsy Physician (taxonomy code 2084E0001X).
Where does Dr. John Karl Whalen practice?
Dr. Whalen practices at 800 Prudential Dr, Jacksonville, FL 32207. Dr. Whalen's primary practice is Baptist Medical Center Jacksonville in Jacksonville, Florida, part of Baptist Health. Dmand AI also links Dr. Whalen to 1 hospital, 1 group practice or clinic and 1 home health agency.
What is Dr. John Karl Whalen's office phone number?
The practice phone on file for Dr. Whalen is (904) 202-2000.
What is Dr. John Karl Whalen's medical license number?
Dr. Whalen holds Florida license OS21301.
Which hospitals is Dr. John Karl Whalen affiliated with?
Dr. Whalen practices at Baptist Medical Center Jacksonville in Jacksonville, Florida. Dr. Whalen is also affiliated with Brooks Rehabilitation Hospital - University Campus. Dmand AI links Dr. Whalen to 1 more hospital.
What medical group is Dr. John Karl Whalen part of?
Dr. Whalen is linked to Baptist Neurology.
What drugs does Dr. John Karl Whalen prescribe most?
In 2024 Medicare Part D data, Dr. Whalen's most prescribed drugs by claims were Gabapentin, Carbidopa-Levodopa and Levetiracetam.
Has Dr. John Karl Whalen received payments from drug or device companies?
CMS Open Payments shows $1,186 in general payments to Dr. Whalen from 21 companies from 2025 to 2025. The largest total came from UCB, Inc.
How long has Dr. John Karl Whalen been practicing?
Dr. Whalen graduated from medical school in 2020, 6 years ago.
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