Dr. Kirtana Viswanathan, MD, MPH
- Medicare services, 2024
- 87
- Medicare patients, 2024
- 48
- Part D claims, 2024
- 178
- Hospital affiliations
- 1
- Medical groups
- 5
- Practice address
- 901 East 5th Street, Washington, MO 63090
- Practice phone
- Call (636) 239-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Kirtana Viswanathan is an internist in Washington, Missouri
Dr. Viswanathan practices at Mercy Hospital Washington in Washington, Missouri, part of Mercy.
Dr. Viswanathan's NPI, 1578134912, was assigned on July 7, 2021. Dr. Viswanathan holds Missouri license 2024036701.
- NPI
- 1578134912NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507307865
- NPI enumeration date
- July 7, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (636) 239-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kirtana Viswanathan practices at Mercy Hospital Washington in Washington, Missouri
Dr. Viswanathan's primary practice is Mercy Hospital Washington, at 901 East 5th Street, Washington, MO 63090 in Franklin County. The practice phone is (636) 239-8000.
- Mercy Hospital Washington901 East 5th Street, Washington, MO 63090 · Franklin CountyPhone(636) 239-8000
Source: Dmand AI Affiliation Data
Dr. Kirtana Viswanathan is affiliated with 1 site of care and 5 medical groups
Dr. Viswanathan's primary practice is Mercy Hospital Washington in Washington, Missouri, part of Mercy. The medical group on file is Mercy Hospital St. Louis. Dmand AI also links Dr. Viswanathan to 4 more medical groups, each named with a free account. Dr. Viswanathan's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kirtana Viswanathan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Viswanathan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital Washington | Available with a free account |
| +4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kirtana Viswanathan is one of 2,114 internists in Missouri
Internal medicine is Dr. Viswanathan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Viswanathan is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Viswanathan
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. Kirtana Viswanathan billed Medicare for 87 services in 2024
CMS data shows 87 Medicare services from Dr. Viswanathan across 2 procedure codes in 2024, for 48 Medicare patients. Medicare paid $5,998 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Viswanathan compared with the Missouri median for internists, 2024
- Dr. Viswanathan
- Missouri median
- Medicare services
- 87vs 53084% below
- Medicare patients
- 48vs 21177% below
- Part D claims
- 23vs 32593% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Viswanathan'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. Kirtana Viswanathan treated 48 Medicare patients in 2024, average age 79
CMS counts 48 Medicare patients who saw Dr. Viswanathan in 2024. The largest group is 75 to 84, with 18 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.81, 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. Viswanathan's median patient age at 75, with 52% women.
Dr. Viswanathan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Viswanathan's Medicare patients by sex, 2024
- Women2144%
- Men2756%
Chronic conditions among Dr. Viswanathan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Chronic kidney disease58%
- Ischemic heart disease54%
- Atrial fibrillation48%
- Diabetes44%
- Heart failure42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Viswanathan'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
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kirtana Viswanathan wrote 178 Medicare Part D claims in 2024
In 2024, Dr. Viswanathan wrote 178 Medicare Part D claims for 102 patients. 89% of them were for generic drugs. CMS names the drug for 23 of them, across 1 drug with 11 or more claims each, at $272 in total drug cost.
Dr. Viswanathan's Part D claims by kind of drug, 2024
- Generic158 claims89%
- Brand-name20 claims11%
Dr. Viswanathan'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. Viswanathan's Part D claims, 2024
- Antibiotics40%71 of 178 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
How Dr. Kirtana Viswanathan takes part in Medicare
Dr. Viswanathan 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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Sources for Dr. Kirtana Viswanathan'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) |
| 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. Kirtana Viswanathan
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. Kirtana Viswanathan's NPI number?
Dr. Kirtana Viswanathan's NPI number is 1578134912. It was assigned on July 7, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Kirtana Viswanathan?
Dr. Kirtana Viswanathan is an internist in Washington, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kirtana Viswanathan practice?
Dr. Viswanathan practices at 901 East 5th Street, Washington, MO 63090. Dr. Viswanathan's primary practice is Mercy Hospital Washington in Washington, Missouri, part of Mercy. Dmand AI also links Dr. Viswanathan to 4 medical groups.
What is Dr. Kirtana Viswanathan's office phone number?
The practice phone on file for Dr. Viswanathan is (636) 239-8000.
What is Dr. Kirtana Viswanathan's medical license number?
Dr. Viswanathan holds Missouri license 2024036701.
Which hospitals is Dr. Kirtana Viswanathan affiliated with?
Dr. Viswanathan practices at Mercy Hospital Washington in Washington, Missouri.
What medical group is Dr. Kirtana Viswanathan part of?
Dr. Viswanathan is linked to Mercy Hospital St. Louis. Dmand AI links Dr. Viswanathan to 4 more medical groups.
Does Dr. Kirtana Viswanathan accept Medicare?
Yes. CMS data shows Dr. Viswanathan billed Medicare for 87 services in 2024, and Dr. Viswanathan accepts Medicare assignment.
How many Medicare patients does Dr. Kirtana Viswanathan see?
CMS counts 48 Medicare patients who saw Dr. Viswanathan in 2024, with an average age of 79.
What services does Dr. Kirtana Viswanathan bill to Medicare?
In 2024, Dr. Viswanathan's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99239).
What drugs does Dr. Kirtana Viswanathan prescribe most?
In 2024 Medicare Part D data, Dr. Viswanathan's most prescribed drugs by claims were Cefdinir.
How long has Dr. Kirtana Viswanathan been practicing?
Dr. Viswanathan graduated from medical school in 2019, 7 years ago.
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