Dr. Gregory John Roberts, MD
- Medicare services, 2024
- 401
- Medicare patients, 2024
- 181
- Part D claims, 2016
- 14
- Hospital affiliations
- 2
- Industry payments
- $634
- Practice address
- 2001 W 86th St, Indianapolis, IN 46260
- Practice phone
- Call (317) 338-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Roberts' professional email, personal email and mobile number
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Dr. Gregory John Roberts is a general surgeon in Indianapolis, Indiana
Dr. Roberts practices at Ascension St. Vincent Hospital - Indianapolis in Indianapolis, Indiana, part of Ascension Health Alliance.
Dr. Roberts' NPI, 1659646735, was assigned on March 21, 2012. Dr. Roberts graduated from Indiana University School of Medicine in 2012. Dr. Roberts holds Indiana license 01076405A.
- NPI
- 1659646735NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618268434
- NPI enumeration date
- March 21, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (317) 338-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory John Roberts practices at Ascension St. Vincent Hospital - Indianapolis in Indianapolis, Indiana
Dr. Roberts' primary practice is Ascension St. Vincent Hospital - Indianapolis, at 2001 W 86th St, Indianapolis, IN 46260 in Marion County. The practice phone is (317) 338-7000.
- Ascension St. Vincent Hospital - Indianapolis2001 W 86th St, Indianapolis, IN 46260 · Marion CountyPhone(317) 338-7000
Source: Dmand AI Affiliation Data
Dr. Gregory John Roberts is affiliated with 3 sites of care and 1 medical group
Dr. Roberts' primary practice is Ascension St. Vincent Hospital - Indianapolis in Indianapolis, Indiana, part of Ascension Health Alliance. Dr. Roberts is also affiliated with Ascension St. Vincent Carmel. The medical group on file is Naab Road Surgical Group. Dmand AI also links Dr. Roberts 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. Gregory John Roberts' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Roberts practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension St. Vincent Hospital - Indianapolis | 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 Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gregory John Roberts is one of 530 general surgeons in Indiana
Surgery is Dr. Roberts' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Roberts is licensed in Indiana.
Specialties and state licenses
- Surgery, IndianaPrimary
General surgeons near Dr. Roberts
Counts of general surgeons 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. Gregory John Roberts billed Medicare for 401 services in 2024
CMS data shows 401 Medicare services from Dr. Roberts across 4 procedure codes in 2024, for 181 Medicare patients. Medicare paid $42,086 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Roberts' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4522024: 40111%
Dr. Roberts compared with the Indiana median for general surgeons, 2024
- Dr. Roberts
- Indiana median
- Medicare services
- 401vs 1562.6 times
- Medicare patients
- 181vs 13138% above
- Part D claims
- 14vs 4065% below
Medians across 526 general surgeons in Indiana with Dmand AI profiles that report each measure.
Dr. Roberts' 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Roberts and other general surgeons in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory John Roberts treated 181 Medicare patients in 2024, average age 76
CMS counts 181 Medicare patients who saw Dr. Roberts in 2024. The largest group is 75 to 84, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.05, 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. Roberts' median patient age at 71, with 45% women.
Dr. Roberts' Medicare patients by age, 2024
Dr. Roberts' Medicare patients by sex, 2024
- Women9150%
- Men9050%
Chronic conditions among Dr. Roberts' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Mood disorders51%
- Depression49%
- Anxiety48%
- Ischemic heart disease48%
- Chronic kidney disease46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Roberts' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory John Roberts wrote 14 Medicare Part D claims in 2016
In 2016, Dr. Roberts wrote 14 Medicare Part D claims. They cover 1 drug, with $149 in total drug cost.
Dr. Roberts' most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Gregory John Roberts takes part in Medicare
Dr. Roberts accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory John Roberts received $634 in industry payments from 2016 to 2025
CMS Open Payments shows 11 general payments to Dr. Roberts from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Acera Surgical, Inc. paid the most, $146.
General payments to Dr. Roberts by program year, 2016 to 2025
Companies that paid Dr. Roberts 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. Gregory John Roberts graduated from Indiana University School of Medicine
Dr. Roberts graduated from Indiana University School of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory John Roberts'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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Gregory John Roberts
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. Gregory John Roberts' NPI number?
Dr. Gregory John Roberts' NPI number is 1659646735. It was assigned on March 21, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory John Roberts?
Dr. Gregory John Roberts is a general surgeon in Indianapolis, Indiana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gregory John Roberts practice?
Dr. Roberts practices at 2001 W 86th St, Indianapolis, IN 46260. Dr. Roberts' primary practice is Ascension St. Vincent Hospital - Indianapolis in Indianapolis, Indiana, part of Ascension Health Alliance. Dmand AI also links Dr. Roberts to 1 group practice or clinic.
What is Dr. Gregory John Roberts' office phone number?
The practice phone on file for Dr. Roberts is (317) 338-7000.
What is Dr. Gregory John Roberts' medical license number?
Dr. Roberts holds Indiana license 01076405A.
Which hospitals is Dr. Gregory John Roberts affiliated with?
Dr. Roberts practices at Ascension St. Vincent Hospital - Indianapolis in Indianapolis, Indiana. Dr. Roberts is also affiliated with Ascension St. Vincent Carmel.
What medical group is Dr. Gregory John Roberts part of?
Dr. Roberts is linked to Naab Road Surgical Group.
Does Dr. Gregory John Roberts accept Medicare?
Yes. CMS data shows Dr. Roberts billed Medicare for 401 services in 2024, and Dr. Roberts accepts Medicare assignment.
How many Medicare patients does Dr. Gregory John Roberts see?
CMS counts 181 Medicare patients who saw Dr. Roberts in 2024, with an average age of 76.
What services does Dr. Gregory John Roberts bill to Medicare?
In 2024, Dr. Roberts' most billed Medicare services were critical care (99291), hospital inpatient care (99232) and hospital inpatient care (99233).
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Where did Dr. Gregory John Roberts go to medical school?
Dr. Roberts graduated from Indiana University School of Medicine in 2012.
What drugs does Dr. Gregory John Roberts prescribe most?
In 2016 Medicare Part D data, Dr. Roberts' most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Gregory John Roberts received payments from drug or device companies?
CMS Open Payments shows $634 in general payments to Dr. Roberts from 8 companies from 2016 to 2025. The largest total came from Acera Surgical, Inc.
How long has Dr. Gregory John Roberts been practicing?
Dr. Roberts graduated from medical school in 2012, 14 years ago.
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