Dr. Kalpathy V. Venkatesan, MD
- Medicare services, 2021
- 29
- Part D claims, 2024
- 30
- Industry payments
- $10,000
- Medical groups
- 3
- Insurance carriers
- 8
- Practice address
- 1165 Montgomery Dr, Santa Rosa, CA 95405
- Practice phone
- Call (707) 525-5300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Santa Rosa Memorial Hospital
Santa Rosa, California
Find Dr. Venkatesan'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. Kalpathy V. Venkatesan is a hematologist and oncologist in Santa Rosa, California
Dr. Venkatesan practices at Santa Rosa Memorial Hospital in Santa Rosa, California.
Dr. Venkatesan's NPI, 1245289420, was assigned on May 8, 2006. Dr. Venkatesan graduated from Jawaharlal Institute of Postgraduate Medical Education and Research in 1975. Dr. Venkatesan holds California license A38108.
- NPI
- 1245289420NPI Registry (opens in a new tab)
- NPI enumeration date
- May 8, 2006
- NPI status
- Active
- Practice phone
- (707) 525-5300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Kalpathy V. Venkatesan practices at Santa Rosa Memorial Hospital in Santa Rosa, California
Dr. Venkatesan's primary practice is Santa Rosa Memorial Hospital, at 1165 Montgomery Dr, Santa Rosa, CA 95405 in Sonoma County. The practice phone is (707) 525-5300.
- Santa Rosa Memorial Hospital1165 Montgomery Dr, Santa Rosa, CA 95405 · Sonoma CountyPhone(707) 525-5300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kalpathy V. Venkatesan is affiliated with 1 site of care and 3 medical groups
Dr. Venkatesan's primary practice is Santa Rosa Memorial Hospital in Santa Rosa, California. The medical group on file is Houston Methodist Specialty Physician Group. Dmand AI also links Dr. Venkatesan to 2 more medical groups, each 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. Kalpathy V. Venkatesan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Venkatesan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Rosa Memorial Hospital | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kalpathy V. Venkatesan is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Venkatesan's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Venkatesan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Venkatesan's licenses on file in 10 states: California, Illinois, New York, Texas, Wisconsin, Maine, Wyoming, Ohio, West Virginia and Michigan.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Illinois license
- New York license
- Texas license
- Wisconsin license
- Maine license
- Wyoming license
- Ohio license
- West Virginia license
- Michigan license
Clinical focus
Dmand AI lists lung cancer among the conditions Dr. Venkatesan treats.
Hematologists and oncologists near Dr. Venkatesan
Counts of hematologists and oncologists 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. Kalpathy V. Venkatesan billed Medicare for 29 services in 2021
CMS data shows 29 Medicare services from Dr. Venkatesan across 1 procedure code in 2021. Medicare paid $203 for them. Every service was in an office.
Dr. Venkatesan's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 1922021: 2985%
- Drugs given in the office
- 2020: 1662021: 0100%
Dr. Venkatesan compared with the California median for hematologists and oncologists, 2021
- Dr. Venkatesan
- California median
- Medicare services
- 29vs 93297% below
- Part D claims
- 12vs 39497% below
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Venkatesan's most billed Medicare procedure codes, 2021
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. Venkatesan and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kalpathy V. Venkatesan's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Venkatesan's median patient age at 75, with 50% women.
Dr. Venkatesan'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
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Kalpathy V. Venkatesan wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Venkatesan wrote 30 Medicare Part D claims. 93% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $215 in total drug cost. In 2021, CMS named 1,431 claims across 65 drugs.
Dr. Venkatesan's Part D claims by kind of drug, 2024
- Generic28 claims93%
- Brand-name and other2 claims7%
Dr. Venkatesan's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1,4312022: 1299%
Drugs named by CMS: 1 in 2022, 65 in 2021.
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. Kalpathy V. Venkatesan received $10,000 in industry payments from 2016 to 2025
CMS Open Payments shows 444 general payments to Dr. Venkatesan from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,715.
General payments to Dr. Venkatesan by program year, 2016 to 2025
General payments to Dr. Venkatesan by kind, 2016 to 2025
- Food and beverage$9,92499%
- Education$761%
Companies that paid Dr. Venkatesan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kalpathy V. Venkatesan graduated from Jawaharlal Institute of Postgraduate Medical Education and Research
Dr. Venkatesan graduated from Jawaharlal Institute of Postgraduate Medical Education and Research in 1975.
- Medical school
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Kalpathy V. Venkatesan accepts plans from 8 insurance carriers
Dr. Venkatesan is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Cigna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- WI State Medicaid
Plan types Dr. Venkatesan accepts, by number of carriers
- Medicare6
- PPO6
- HMO4
- POS2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kalpathy V. Venkatesan'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 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) |
| 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. Kalpathy V. Venkatesan
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. Kalpathy V. Venkatesan's NPI number?
Dr. Kalpathy V. Venkatesan's NPI number is 1245289420. It was assigned on May 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kalpathy V. Venkatesan?
Dr. Kalpathy V. Venkatesan is a hematologist and oncologist in Santa Rosa, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Kalpathy V. Venkatesan practice?
Dr. Venkatesan practices at 1165 Montgomery Dr, Santa Rosa, CA 95405. Dr. Venkatesan's primary practice is Santa Rosa Memorial Hospital in Santa Rosa, California. Dmand AI also links Dr. Venkatesan to 2 medical groups.
What is Dr. Kalpathy V. Venkatesan's office phone number?
The practice phone on file for Dr. Venkatesan is (707) 525-5300.
What is Dr. Kalpathy V. Venkatesan's medical license number?
Dr. Venkatesan holds California license A38108, one of the licenses on file in 10 states.
Which states has Dr. Kalpathy V. Venkatesan been licensed in?
Dmand AI has state licenses on file for Dr. Venkatesan in California (1982 to 2027), Illinois (2024 to 2026), New York (1983 to 2026), Texas (1982 to 2026), Wisconsin (2022 to 2025), Maine (2022 to 2024), Wyoming (2022 to 2024), Ohio (1991 to 2011), West Virginia (2009 to 2011) and Michigan (1979 to 2000).
What medical group is Dr. Kalpathy V. Venkatesan part of?
Dr. Venkatesan is linked to Houston Methodist Specialty Physician Group. Dmand AI links Dr. Venkatesan to 2 more medical groups.
Does Dr. Kalpathy V. Venkatesan accept Medicare?
Yes. CMS data shows Dr. Venkatesan billed Medicare for 29 services in 2021.
Is Dr. Kalpathy V. Venkatesan board certified?
Yes. Dr. Venkatesan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Kalpathy V. Venkatesan bill to Medicare?
In 2021, Dr. Venkatesan's most billed Medicare services were infusion or chemotherapy administration (96372).
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Where did Dr. Kalpathy V. Venkatesan go to medical school?
Dr. Venkatesan graduated from Jawaharlal Institute of Postgraduate Medical Education and Research in 1975.
What drugs does Dr. Kalpathy V. Venkatesan prescribe most?
In 2022 Medicare Part D data, Dr. Venkatesan's most prescribed drugs by claims were Anastrozole.
Has Dr. Kalpathy V. Venkatesan received payments from drug or device companies?
CMS Open Payments shows $10,000 in general payments to Dr. Venkatesan from 37 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Kalpathy V. Venkatesan been practicing?
Dr. Venkatesan graduated from medical school in 1975, 51 years ago.
What insurance does Dr. Kalpathy V. Venkatesan accept?
Dr. Venkatesan is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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