Dr. Karthi Subbannan, MD
- Medicare services, 2024
- 635
- Medicare patients, 2024
- 289
- Part D claims, 2024
- 917
- MIPS score, 2024
- 71
- Hospital affiliations
- 5
- Practice address
- 1000 Johnson Ferry Road, NE, Atlanta, GA 30342
- Practice phone
- Call (404) 851-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Subbannan'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. Karthi Subbannan is a hematologist and oncologist in Atlanta, Georgia
Dr. Subbannan practices at Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital.
Dr. Subbannan's NPI, 1154443091, was assigned on April 4, 2007. Dr. Subbannan holds Georgia license 062169.
- NPI
- 1154443091NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567519606
- NPI enumeration date
- April 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 851-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karthi Subbannan practices at Northside Hospital Atlanta in Atlanta, Georgia
Dr. Subbannan's primary practice is Northside Hospital Atlanta, at 1000 Johnson Ferry Road, NE, Atlanta, GA 30342 in Fulton County. The practice phone is (404) 851-8000.
- Northside Hospital Atlanta1000 Johnson Ferry Road, NE, Atlanta, GA 30342 · Fulton CountyPhone(404) 851-8000
Source: Dmand AI Affiliation Data
Dr. Karthi Subbannan is affiliated with 5 sites of care and 1 medical group
Dr. Subbannan's primary practice is Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital. Dr. Subbannan is also affiliated with Northside Hospital Forsyth. The medical group on file is Northside Hospital Cancer Institute. Dmand AI also links Dr. Subbannan to 3 more hospitals, 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. Karthi Subbannan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Subbannan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northside Hospital Atlanta | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northside Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Karthi Subbannan is one of 379 hematologists and oncologists in Georgia
Hematology and oncology is Dr. Subbannan's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Subbannan is licensed in Georgia.
Specialties and state licenses
- Hematology and oncology, GeorgiaPrimary
Hematologists and oncologists near Dr. Subbannan
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. Karthi Subbannan billed Medicare for 635 services in 2024
CMS data shows 635 Medicare services from Dr. Subbannan across 6 procedure codes in 2024, for 289 Medicare patients. Medicare paid $36,159 for them. Every service was in an office.
Dr. Subbannan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5882024: 6185%
- Other services
- 2023: 02024: 17
Dr. Subbannan compared with the Georgia median for hematologists and oncologists, 2024
- Dr. Subbannan
- Georgia median
- Medicare services
- 635vs 6918% below
- Medicare patients
- 289vs 23523% above
- Part D claims
- 702vs 675Close to median
Medians across 350 hematologists and oncologists in Georgia with Dmand AI profiles that report each measure.
Dr. Subbannan'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. Karthi Subbannan treated 289 Medicare patients in 2024, average age 76
CMS counts 289 Medicare patients who saw Dr. Subbannan in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Subbannan's median patient age at 63, with 70% women.
Dr. Subbannan's Medicare patients by age, 2024
Dr. Subbannan's Medicare patients by sex, 2024
- Women19969%
- Men9031%
Chronic conditions among Dr. Subbannan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Cancer32%
- Ischemic heart disease31%
- Anxiety27%
- Mood disorders27%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Subbannan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women70%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karthi Subbannan wrote 917 Medicare Part D claims in 2024
In 2024, Dr. Subbannan wrote 917 Medicare Part D claims for 146 patients. 66% of them were for generic drugs. CMS names the drug for 702 of them, across 22 drugs with 11 or more claims each, at $1,237,383 in total drug cost. In 2023, CMS named 642 claims across 20 drugs.
Dr. Subbannan's Part D claims by kind of drug, 2024
- Generic604 claims66%
- Brand-name313 claims34%
Dr. Subbannan'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. Subbannan's Part D claims, 2024
- Opioids9%84 of 917 claims
- Antibiotics2%16 of 917 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: 6422024: 7029%
Drugs named by CMS: 22 in 2024, 20 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
Dr. Karthi Subbannan scored 71 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 71 out of 100 for Dr. Subbannan for performance year 2024, reported as part of a group. Dr. Subbannan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Subbannan's MIPS scores, performance year 2024
- 71of 100Final score
- 69.2of 100Quality
- 40of 100Improvement Activities
- 51of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Karthi Subbannan received $10,068 in industry payments from 2016 to 2025
CMS Open Payments shows 161 general payments to Dr. Subbannan from 46 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 53% of the total. Pfizer Inc. paid the most, $5,928.
General payments to Dr. Subbannan by program year, 2016 to 2025
General payments to Dr. Subbannan by kind, 2016 to 2025
- Speaker and faculty fees$5,32553%
- Food and beverage$4,71047%
- Education$330%
Companies that paid Dr. Subbannan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karthi Subbannan'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)Clinician Public Reporting: Overall MIPS Performance (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. Karthi Subbannan
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. Karthi Subbannan's NPI number?
Dr. Karthi Subbannan's NPI number is 1154443091. It was assigned on April 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Karthi Subbannan?
Dr. Karthi Subbannan is a hematologist and oncologist in Atlanta, Georgia. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Karthi Subbannan practice?
Dr. Subbannan practices at 1000 Johnson Ferry Road, NE, Atlanta, GA 30342. Dr. Subbannan's primary practice is Northside Hospital Atlanta in Atlanta, Georgia, part of Northside Hospital. Dmand AI also links Dr. Subbannan to 3 hospitals.
What is Dr. Karthi Subbannan's office phone number?
The practice phone on file for Dr. Subbannan is (404) 851-8000.
What is Dr. Karthi Subbannan's medical license number?
Dr. Subbannan holds Georgia license 062169.
Which hospitals is Dr. Karthi Subbannan affiliated with?
Dr. Subbannan practices at Northside Hospital Atlanta in Atlanta, Georgia. Dr. Subbannan is also affiliated with Northside Hospital Forsyth. Dmand AI links Dr. Subbannan to 3 more hospitals.
What medical group is Dr. Karthi Subbannan part of?
Dr. Subbannan is linked to Northside Hospital Cancer Institute.
Does Dr. Karthi Subbannan accept Medicare?
Yes. CMS data shows Dr. Subbannan billed Medicare for 635 services in 2024, and Dr. Subbannan accepts Medicare assignment.
What is Dr. Karthi Subbannan's MIPS score?
Dr. Subbannan's MIPS final score for performance year 2024 is 71 out of 100, reported as part of a group.
How many Medicare patients does Dr. Karthi Subbannan see?
CMS counts 289 Medicare patients who saw Dr. Subbannan in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Karthi Subbannan bill to Medicare?
In 2024, Dr. Subbannan's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99203).
What drugs does Dr. Karthi Subbannan prescribe most?
In 2024 Medicare Part D data, Dr. Subbannan's most prescribed drugs by claims were Eliquis, Anastrozole and Hydroxyurea.
Has Dr. Karthi Subbannan received payments from drug or device companies?
CMS Open Payments shows $10,068 in general payments to Dr. Subbannan from 46 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Karthi Subbannan been practicing?
Dr. Subbannan graduated from medical school in 1996, 30 years ago.
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