Dr. John Jacob Kakkanathu, MD
- Medicare services, 2024
- 710
- Medicare patients, 2024
- 244
- Part D claims, 2024
- 228
- Hospital affiliations
- 1
- Industry payments
- $54
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kakkanathu'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. John Jacob Kakkanathu is an internist in Saint Louis, Missouri
Dr. Kakkanathu practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Kakkanathu's NPI, 1346458411, was assigned on May 20, 2007. Dr. Kakkanathu graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2006. Dr. Kakkanathu holds Missouri license 2009008964.
- NPI
- 1346458411NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375698491
- NPI enumeration date
- May 20, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Jacob Kakkanathu practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Kakkanathu's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. John Jacob Kakkanathu is affiliated with 6 sites of care and 6 medical groups
Dr. Kakkanathu's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. The medical group on file is Mercy Hospital St. Louis. Dmand AI also links Dr. Kakkanathu to 5 more group practices and clinics and 5 medical groups, 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 Jacob Kakkanathu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kakkanathu practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +5 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Jacob Kakkanathu is one of 2,114 internists in Missouri
Internal medicine is Dr. Kakkanathu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kakkanathu is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Kakkanathu
Counts of internists 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 Jacob Kakkanathu billed Medicare for 710 services in 2024
CMS data shows 710 Medicare services from Dr. Kakkanathu across 6 procedure codes in 2024, for 244 Medicare patients. Medicare paid $49,644 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kakkanathu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7622024: 7107%
Dr. Kakkanathu compared with the Missouri median for internists, 2024
- Dr. Kakkanathu
- Missouri median
- Medicare services
- 710vs 53034% above
- Medicare patients
- 244vs 21116% above
- Part D claims
- 63vs 32581% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Kakkanathu'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kakkanathu and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Jacob Kakkanathu treated 244 Medicare patients in 2024, average age 75
CMS counts 244 Medicare patients who saw Dr. Kakkanathu in 2024. The largest group is 75 to 84, with 80 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.91, 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. Kakkanathu's median patient age at 72, with 54% women.
Dr. Kakkanathu's Medicare patients by age, 2024
Dr. Kakkanathu's Medicare patients by sex, 2024
- Women14861%
- Men9639%
Chronic conditions among Dr. Kakkanathu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Mood disorders58%
- Chronic kidney disease54%
- Heart failure53%
- Depression51%
- Ischemic heart disease51%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kakkanathu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Jacob Kakkanathu wrote 228 Medicare Part D claims in 2024
In 2024, Dr. Kakkanathu wrote 228 Medicare Part D claims for 106 patients. 92% of them were for generic drugs. CMS names the drug for 63 of them, across 5 drugs with 11 or more claims each, at $305 in total drug cost. In 2023, CMS named 27 claims across 2 drugs.
Dr. Kakkanathu's Part D claims by kind of drug, 2024
- Generic209 claims92%
- Brand-name19 claims8%
Dr. Kakkanathu'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. Kakkanathu's Part D claims, 2024
- Opioids15%34 of 228 claims
- Antibiotics23%53 of 228 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 272024: 63133%
Drugs named by CMS: 5 in 2024, 2 in 2023.
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
How Dr. John Jacob Kakkanathu takes part in Medicare
Dr. Kakkanathu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Jacob Kakkanathu received $54 in industry payments in 2016
CMS Open Payments shows 3 general payments to Dr. Kakkanathu from 1 drug or device company in 2016. Food and beverage make up the largest share, 69% of the total. The Medicines Company paid the most, $54.
General payments to Dr. Kakkanathu by kind, 2016 to 2016
- Food and beverage$3869%
- Education$1731%
Companies that paid Dr. Kakkanathu the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Jacob Kakkanathu graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Kakkanathu graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Jacob Kakkanathu'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. John Jacob Kakkanathu
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 Jacob Kakkanathu's NPI number?
Dr. John Jacob Kakkanathu's NPI number is 1346458411. It was assigned on May 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Jacob Kakkanathu?
Dr. John Jacob Kakkanathu is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Jacob Kakkanathu practice?
Dr. Kakkanathu practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Kakkanathu's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Kakkanathu to 5 group practices and clinics and 5 medical groups.
What is Dr. John Jacob Kakkanathu's office phone number?
The practice phone on file for Dr. Kakkanathu is (314) 251-6000.
What is Dr. John Jacob Kakkanathu's medical license number?
Dr. Kakkanathu holds Missouri license 2009008964.
Which hospitals is Dr. John Jacob Kakkanathu affiliated with?
Dr. Kakkanathu practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Dr. John Jacob Kakkanathu part of?
Dr. Kakkanathu is linked to Mercy Hospital St. Louis. Dmand AI links Dr. Kakkanathu to 5 more medical groups.
Does Dr. John Jacob Kakkanathu accept Medicare?
Yes. CMS data shows Dr. Kakkanathu billed Medicare for 710 services in 2024, and Dr. Kakkanathu accepts Medicare assignment.
How many Medicare patients does Dr. John Jacob Kakkanathu see?
CMS counts 244 Medicare patients who saw Dr. Kakkanathu in 2024, with an average age of 75.
What services does Dr. John Jacob Kakkanathu bill to Medicare?
In 2024, Dr. Kakkanathu's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
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Where did Dr. John Jacob Kakkanathu go to medical school?
Dr. Kakkanathu graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2006.
What drugs does Dr. John Jacob Kakkanathu prescribe most?
In 2024 Medicare Part D data, Dr. Kakkanathu's most prescribed drugs by claims were Oxycodone HCl, Ciprofloxacin HCl and Prednisone.
Has Dr. John Jacob Kakkanathu received payments from drug or device companies?
CMS Open Payments shows $54 in general payments to Dr. Kakkanathu from 1 company from 2016 to 2016. The largest total came from The Medicines Company.
How long has Dr. John Jacob Kakkanathu been practicing?
Dr. Kakkanathu graduated from medical school in 2006, 20 years ago.
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