Clinical CompetenceColonoscopyCOVID-19
Dr. Shivakumar Vignesh, MD
NPI1033193891
- Medicare services, 2024
- 262
- Medicare patients, 2024
- 181
- Part D claims, 2024
- 172
- Publications
- 26
- MIPS score, 2024
- 78
- Practice address
- 650 E. Indian School Road, Phoenix, AZ 85012
- Practice phone
- Call (602) 222-6444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Vignesh'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. Shivakumar Vignesh is a gastroenterologist in Phoenix, Arizona
Dr. Vignesh practices at Carl T. Hayden Veterans' Administration Medical Center in Phoenix, Arizona, part of Veterans Health Administration.
Dr. Vignesh's NPI, 1033193891, was assigned on December 5, 2005. Dr. Vignesh holds Arizona license 64480.
NPI and contact details
- NPI
- 1033193891NPI Registry (opens in a new tab)
- NPI enumeration date
- December 5, 2005
- NPI status
- Active
- Practice phone
- (602) 222-6444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Shivakumar Vignesh practices at Carl T. Hayden Veterans' Administration Medical Center in Phoenix, Arizona
Dr. Vignesh's primary practice is Carl T. Hayden Veterans' Administration Medical Center, at 650 E. Indian School Road, Phoenix, AZ 85012 in Maricopa County. The practice phone is (602) 222-6444.
- Carl T. Hayden Veterans' Administration Medical Center650 E. Indian School Road, Phoenix, AZ 85012 · Maricopa CountyPhone(602) 222-6444
Source: Dmand AI Affiliation Data
Dr. Shivakumar Vignesh is affiliated with 1 site of care and 1 medical group
Dr. Vignesh's primary practice is Carl T. Hayden Veterans' Administration Medical Center in Phoenix, Arizona, part of Veterans Health Administration. The medical group on file is Downstate Health Physicians. Dr. Vignesh'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. Shivakumar Vignesh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vignesh practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Carl T. Hayden Veterans' Administration Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Vignesh practices
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Dr. Shivakumar Vignesh is one of 380 gastroenterologists in Arizona
Gastroenterology is Dr. Vignesh's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Vignesh's licenses on file in 3 states: Arizona, Connecticut and Florida.
Specialties and state licenses
- Gastroenterology, ArizonaPrimary
- Connecticut license
- Florida license
Gastroenterologists near Dr. Vignesh
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
380gastroenterologists in Arizona108gastroenterologists in Phoenix6gastroenterologists at Carl T. Hayden Veterans' Administration Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Shivakumar Vignesh billed Medicare for 262 services in 2024
CMS data shows 262 Medicare services from Dr. Vignesh across 11 procedure codes in 2024, for 181 Medicare patients. Medicare paid $21,388 for them.
Medicare services, 2024262
Medicare patients181
Paid by Medicare$21,388
Procedure codes11
Dr. Vignesh's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2292024: 15034%
- Surgery
- 2023: 1232024: 1129%
Where Dr. Vignesh's Medicare services took place, 2024
- In an office166%
- In a facility24694%
Dr. Vignesh compared with the Arizona median for gastroenterologists, 2024
- Dr. Vignesh
- Arizona median
- Medicare services
- 262vs 50848% below
- Medicare patients
- 181vs 31943% below
- Part D claims
- 135vs 31056% below
Medians across 369 gastroenterologists in Arizona with Dmand AI profiles that report each measure.
Dr. Vignesh'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. Shivakumar Vignesh treated 181 Medicare patients in 2024, average age 74
CMS counts 181 Medicare patients who saw Dr. Vignesh in 2024. The largest group is 65 to 74, with 91 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. 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. Vignesh's median patient age at 65, with 58% women.
Medicare patients, 2024181
Average age74
Average risk score1.81
Also on Medicaid8%
Dr. Vignesh's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Vignesh's Medicare patients by sex, 2024
- Women7944%
- Men10256%
Chronic conditions among Dr. Vignesh's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Cancer33%
- Ischemic heart disease31%
- Diabetes29%
- Chronic kidney disease28%
- Mood disorders24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Vignesh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women58%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Shivakumar Vignesh wrote 172 Medicare Part D claims in 2024
In 2024, Dr. Vignesh wrote 172 Medicare Part D claims for 120 patients. 81% of them were for generic drugs. CMS names the drug for 135 of them, across 4 drugs with 11 or more claims each, at $2,397 in total drug cost. In 2023, CMS named 61 claims across 3 drugs.
Part D claims, 2024172
Drugs named by CMS4
Total drug cost$2,397
Part D patients120
Dr. Vignesh's Part D claims by kind of drug, 2024
- Generic140 claims81%
- Brand-name32 claims19%
Dr. Vignesh'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. Vignesh's Part D claims, 2024
- Antibiotics8%14 of 172 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: 612024: 135121%
Drugs named by CMS: 4 in 2024, 3 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. Shivakumar Vignesh scored 78 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 78 out of 100 for Dr. Vignesh for performance year 2024, reported as part of a group.
Dr. Vignesh's MIPS scores, performance year 2024
- 78of 100Final score
- 62.2of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 61of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Shivakumar Vignesh has 26 publications on record
Dmand AI links 26 papers to Dr. Vignesh, published from 2011 to 2025. 2019 was the busiest year, with 4. The most frequent topics are Colonoscopy, Gastroenterology and Adenoma. Dr. Vignesh has published most often in Gastrointest Endosc. Dr. Vignesh's most frequent co-authors are Cynthia Lynn Harris, MD, Jason B. Klapman, MD and Evan B. Grossman, MD.
Papers26
Years published2011 to 2025
Dr. Vignesh's papers by year, 2012 to 2025
Topics Dr. Vignesh writes about most
- Colonoscopy
- Gastroenterology
- Adenoma
- Carcinoma, Pancreatic Ductal
- Clinical Competence
- Colorectal Neoplasms
- COVID-19
- Early Detection of Cancer
Dr. Vignesh's most frequent co-authors
- Cynthia Lynn Harris, MD3 shared papers
- Jason B. Klapman, MD3 shared papers
- Evan B. Grossman, MD2 shared papers
Recent publications by Dr. Vignesh
Am J Gastroenterol
J Gastroenterol Hepatol
Endoscopy, GastrointestinalGastrointestinal HemorrhageHospital Mortality
See who Dr. Vignesh researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Vignesh works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Shivakumar Vignesh received $3,016 in industry payments from 2016 to 2025
CMS Open Payments shows 58 general payments to Dr. Vignesh from 8 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 51% of the total. Medtronic, Inc. paid the most, $1,176.
General payments to Dr. Vignesh by program year, 2016 to 2025
General payments to Dr. Vignesh by kind, 2016 to 2025
$3Kin total
- Travel and lodging$1,55051%
- Food and beverage$1,27242%
- Education$1946%
Companies that paid Dr. Vignesh 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. Shivakumar Vignesh'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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Shivakumar Vignesh
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. Shivakumar Vignesh's NPI number?
Dr. Shivakumar Vignesh's NPI number is 1033193891. It was assigned on December 5, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Shivakumar Vignesh?
Dr. Shivakumar Vignesh is a gastroenterologist in Phoenix, Arizona. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Shivakumar Vignesh practice?
Dr. Vignesh practices at 650 E. Indian School Road, Phoenix, AZ 85012. Dr. Vignesh's primary practice is Carl T. Hayden Veterans' Administration Medical Center in Phoenix, Arizona, part of Veterans Health Administration.
What is Dr. Shivakumar Vignesh's office phone number?
The practice phone on file for Dr. Vignesh is (602) 222-6444.
What is Dr. Shivakumar Vignesh's medical license number?
Dr. Vignesh holds Arizona license 64480, one of the licenses on file in 3 states.
Which states has Dr. Shivakumar Vignesh been licensed in?
Dmand AI has state licenses on file for Dr. Vignesh in Arizona, Connecticut and Florida.
Which hospitals is Dr. Shivakumar Vignesh affiliated with?
Dr. Vignesh practices at Carl T. Hayden Veterans' Administration Medical Center in Phoenix, Arizona.
What medical group is Dr. Shivakumar Vignesh part of?
Dr. Vignesh is linked to Downstate Health Physicians.
Does Dr. Shivakumar Vignesh accept Medicare?
Yes. CMS data shows Dr. Vignesh billed Medicare for 262 services in 2024.
What is Dr. Shivakumar Vignesh's MIPS score?
Dr. Vignesh's MIPS final score for performance year 2024 is 78 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Shivakumar Vignesh see?
CMS counts 181 Medicare patients who saw Dr. Vignesh in 2024, with an average age of 74.
What services does Dr. Shivakumar Vignesh bill to Medicare?
In 2024, Dr. Vignesh's most billed Medicare services were hospital inpatient care (99231), office visit, new patient (99204) and surgery: digestive system (43239).
What drugs does Dr. Shivakumar Vignesh prescribe most?
In 2024 Medicare Part D data, Dr. Vignesh's most prescribed drugs by claims were Peg 3350-Electrolyte, Pantoprazole Sodium and Gavilyte-G.
Has Dr. Shivakumar Vignesh received payments from drug or device companies?
CMS Open Payments shows $3,016 in general payments to Dr. Vignesh from 8 companies from 2016 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Shivakumar Vignesh been practicing?
Dr. Vignesh graduated from medical school in 1996, 30 years ago.
Does Dr. Shivakumar Vignesh do research?
Dmand AI links 26 publications to Dr. Vignesh, published from 2011 to 2025.
Who does Dr. Shivakumar Vignesh publish with?
Dr. Vignesh's most frequent co-authors are Cynthia Lynn Harris, MD (3 shared papers), Jason B. Klapman, MD (3 shared papers) and Evan B. Grossman, MD (2 shared papers).
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