Dr. Ujjwal Kumar, MD
- Medicare services, 2024
- 506
- Medicare patients, 2024
- 314
- Part D claims, 2024
- 614
- Hospital affiliations
- 2
- Industry payments
- $4,068
- Practice address
- 50 Route 25A, Smithtown, NY 11787
- Practice phone
- Call (631) 862-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kumar's professional email, personal email and mobile number
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Dr. Ujjwal Kumar is a gastroenterologist in Smithtown, New York
Dr. Kumar practices at St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre.
Dr. Kumar's NPI, 1235570805, was assigned on July 11, 2013. Dr. Kumar holds Iowa license MD-45784.
- NPI
- 1235570805NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840582136
- NPI enumeration date
- July 11, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (631) 862-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ujjwal Kumar practices at St. Catherine of Siena Hospital in Smithtown, New York
Dr. Kumar's primary practice is St. Catherine of Siena Hospital, at 50 Route 25A, Smithtown, NY 11787 in Suffolk County. The practice phone is (631) 862-3000.
- St. Catherine of Siena Hospital50 Route 25A, Smithtown, NY 11787 · Suffolk CountyPhone(631) 862-3000
Source: Dmand AI Affiliation Data
Dr. Ujjwal Kumar is affiliated with 3 sites of care and 1 medical group
Dr. Kumar's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. Dr. Kumar is also affiliated with Good Samaritan University Hospital St. Charles Campus. The medical group on file is Cardiac Interventional Group. Dmand AI also links Dr. Kumar to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ujjwal Kumar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kumar practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Catherine of Siena Hospital | Available with a free account |
| +2 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 Diocese of Rockville Centre and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ujjwal Kumar is one of 1,583 gastroenterologists in New York
Gastroenterology is Dr. Kumar's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Kumar is licensed in Iowa.
Specialties and state licenses
- Gastroenterology, IowaPrimary
Gastroenterologists near Dr. Kumar
Counts of gastroenterologists 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. Ujjwal Kumar billed Medicare for 506 services in 2024
CMS data shows 506 Medicare services from Dr. Kumar across 15 procedure codes in 2024, for 314 Medicare patients. Medicare paid $58,933 for them.
Dr. Kumar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 4422024: 29334%
- Office and hospital visits
- 2023: 1852024: 1998%
- Tests and treatments
- 2023: 152024: 147%
Where Dr. Kumar's Medicare services took place, 2024
- In an office15731%
- In a facility34969%
Dr. Kumar compared with the New York median for gastroenterologists, 2024
- Dr. Kumar
- New York median
- Medicare services
- 506vs 42120% above
- Medicare patients
- 314vs 23633% above
- Part D claims
- 503vs 38232% above
Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.
Dr. Kumar'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. Ujjwal Kumar treated 314 Medicare patients in 2024, average age 73
CMS counts 314 Medicare patients who saw Dr. Kumar in 2024. The largest group is 65 to 74, with 164 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kumar's median patient age at 66, with 52% women.
Dr. Kumar's Medicare patients by age, 2024
Dr. Kumar's Medicare patients by sex, 2024
- Women17355%
- Men14145%
Chronic conditions among Dr. Kumar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Ischemic heart disease34%
- Anxiety32%
- Diabetes32%
- Mood disorders31%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kumar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women52%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ujjwal Kumar wrote 614 Medicare Part D claims in 2024
In 2024, Dr. Kumar wrote 614 Medicare Part D claims for 304 patients. 82% of them were for generic drugs. CMS names the drug for 503 of them, across 11 drugs with 11 or more claims each, at $81,362 in total drug cost. In 2023, CMS named 700 claims across 15 drugs.
Dr. Kumar's Part D claims by kind of drug, 2024
- Generic501 claims82%
- Brand-name113 claims18%
Dr. Kumar'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. Kumar's Part D claims, 2024
- Antibiotics2%11 of 614 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: 7002024: 50328%
Drugs named by CMS: 11 in 2024, 15 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. Ujjwal Kumar ranks in the 88th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Kumar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kumar as offering telehealth. CMS counts 179 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Kumar, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Kumar ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 88th percentile179 procedures
- Colonoscopy
- 64th percentile51 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ujjwal Kumar received $4,068 in industry payments from 2020 to 2025
CMS Open Payments shows 159 general payments to Dr. Kumar from 24 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 71% of the total. Boston Scientific Corporation paid the most, $1,221.
General payments to Dr. Kumar by program year, 2020 to 2025
General payments to Dr. Kumar by kind, 2020 to 2025
- Food and beverage$2,89571%
- Travel and lodging$1,07426%
- Education$1002%
Companies that paid Dr. Kumar the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ujjwal Kumar'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)Doctors and Clinicians Utilization Data (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. Ujjwal Kumar
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. Ujjwal Kumar's NPI number?
Dr. Ujjwal Kumar's NPI number is 1235570805. It was assigned on July 11, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Ujjwal Kumar?
Dr. Ujjwal Kumar is a gastroenterologist in Smithtown, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Ujjwal Kumar practice?
Dr. Kumar practices at 50 Route 25A, Smithtown, NY 11787. Dr. Kumar's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. Dmand AI also links Dr. Kumar to 1 group practice or clinic.
What is Dr. Ujjwal Kumar's office phone number?
The practice phone on file for Dr. Kumar is (631) 862-3000.
What is Dr. Ujjwal Kumar's medical license number?
Dr. Kumar holds Iowa license MD-45784.
Which hospitals is Dr. Ujjwal Kumar affiliated with?
Dr. Kumar practices at St. Catherine of Siena Hospital in Smithtown, New York. Dr. Kumar is also affiliated with Good Samaritan University Hospital St. Charles Campus.
What medical group is Dr. Ujjwal Kumar part of?
Dr. Kumar is linked to Cardiac Interventional Group.
Does Dr. Ujjwal Kumar accept Medicare?
Yes. CMS data shows Dr. Kumar billed Medicare for 506 services in 2024, and Dr. Kumar accepts Medicare assignment.
Does Dr. Ujjwal Kumar offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Kumar as offering telehealth services.
How many Medicare patients does Dr. Ujjwal Kumar see?
CMS counts 314 Medicare patients who saw Dr. Kumar in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Ujjwal Kumar bill to Medicare?
In 2024, Dr. Kumar's most billed Medicare services were surgery: digestive system (45385), office visit, established patient (99214) and surgery: digestive system (45380).
What drugs does Dr. Ujjwal Kumar prescribe most?
In 2024 Medicare Part D data, Dr. Kumar's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Pantoprazole Sodium and Gavilyte-G.
Has Dr. Ujjwal Kumar received payments from drug or device companies?
CMS Open Payments shows $4,068 in general payments to Dr. Kumar from 24 companies from 2020 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Ujjwal Kumar been practicing?
Dr. Kumar graduated from medical school in 2007, 19 years ago.
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