Dr. Andrew B. Gentry, MD
- Medicare services, 2024
- 753
- Medicare patients, 2024
- 565
- Part D claims, 2024
- 414
- Publications
- 4
- Clinical trials
- 5
- Practice address
- 875 S Cottonwood Road Suite 100, Bozeman, MT 59718
- Practice phone
- Call (406) 219-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bozeman Outpatient Surgery Center
Surgery Center - Medicare-Certified · Bozeman, Montana
Find Dr. Gentry'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. Andrew B. Gentry is a gastroenterologist in Bozeman, Montana
Dr. Gentry practices at Bozeman Outpatient Surgery Center in Bozeman, Montana.
Dr. Gentry's NPI, 1922072560, was assigned on February 13, 2006. Dr. Gentry holds Montana license 26717.
- NPI
- 1922072560NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789822206
- NPI enumeration date
- February 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (406) 219-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew B. Gentry practices at Bozeman Outpatient Surgery Center in Bozeman, Montana
Dr. Gentry's primary practice is Bozeman Outpatient Surgery Center, at 875 S Cottonwood Road Suite 100, Bozeman, MT 59718. The practice phone is (406) 219-2800.
- Bozeman Outpatient Surgery Center875 S Cottonwood Road Suite 100, Bozeman, MT 59718Phone(406) 219-2800
Source: Dmand AI Affiliation Data
Dr. Andrew B. Gentry is affiliated with 9 sites of care and 4 medical groups
Dr. Gentry's primary practice is Bozeman Outpatient Surgery Center in Bozeman, Montana. Dr. Gentry is also affiliated with Bozeman Health Deaconess Regional Medical Center. The medical group on file is SCL Health Medical Group. Dmand AI also links Dr. Gentry to 4 more hospitals, 3 group practices and clinics and 3 medical groups, 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. Andrew B. Gentry's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gentry practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bozeman Outpatient Surgery Center | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew B. Gentry is one of 40 gastroenterologists in Montana
Gastroenterology is Dr. Gentry's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Gentry's licenses on file in 2 states: Montana and Virginia.
Specialties and state licenses
- Gastroenterology, MontanaPrimary
- Internal medicine, Virginia
Gastroenterologists near Dr. Gentry
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. Andrew B. Gentry billed Medicare for 753 services in 2024
CMS data shows 753 Medicare services from Dr. Gentry across 17 procedure codes in 2024, for 565 Medicare patients. Medicare paid $95,349 for them.
Dr. Gentry's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5902024: 51712%
- Office and hospital visits
- 2023: 1352024: 10919%
- Other services
- 2023: 982024: 8018%
- Imaging
- 2023: 472024: 47No change
Where Dr. Gentry's Medicare services took place, 2024
- In an office10914%
- In a facility64486%
Dr. Gentry compared with the Montana median for gastroenterologists, 2024
- Dr. Gentry
- Montana median
- Medicare services
- 753vs 48057% above
- Medicare patients
- 565vs 44826% above
- Part D claims
- 243vs 244Close to median
Medians across 44 gastroenterologists in Montana with Dmand AI profiles that report each measure.
Dr. Gentry'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gentry and other gastroenterologists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew B. Gentry treated 565 Medicare patients in 2024, average age 73
CMS counts 565 Medicare patients who saw Dr. Gentry in 2024. The largest group is 65 to 74, with 315 patients. 61% of them have high cholesterol, and 59% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.02, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gentry's median patient age at 68, with 48% women.
Dr. Gentry's Medicare patients by age, 2024
Dr. Gentry's Medicare patients by sex, 2024
- Women28751%
- Men27849%
Chronic conditions among Dr. Gentry's Medicare patients, 2024
- High cholesterol61%
- High blood pressure59%
- Arthritis44%
- Ischemic heart disease22%
- Mood disorders21%
- Diabetes20%
- Anxiety19%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gentry's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew B. Gentry wrote 414 Medicare Part D claims in 2024
In 2024, Dr. Gentry wrote 414 Medicare Part D claims for 116 patients. 74% of them were for generic drugs. CMS names the drug for 243 of them, across 12 drugs with 11 or more claims each, at $649,881 in total drug cost. In 2023, CMS named 240 claims across 12 drugs.
Dr. Gentry's Part D claims by kind of drug, 2024
- Generic308 claims74%
- Brand-name106 claims26%
Dr. Gentry'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. Gentry's Part D claims, 2024
- Opioids3%14 of 414 claims
- Antibiotics8%32 of 414 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: 2402024: 2431%
Drugs named by CMS: 12 in 2024, 12 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. Andrew B. Gentry ranks in the 98th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Gentry accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gentry as offering telehealth. CMS counts 462 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Gentry, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Gentry ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 98th percentile462 procedures
- Colonoscopy
- 89th percentile153 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. Andrew B. Gentry has 4 publications on record
Dmand AI links 4 papers to Dr. Gentry, published from 2011 to 2022. 2021 was the busiest year, with 2. Dr. Gentry's most frequent co-authors are William D. Chey, MD, David B. King, MD and Borko Nojkov, MD.
Dr. Gentry's papers by year, 2011 to 2022
Dr. Gentry's most frequent co-authors
Recent publications by Dr. Gentry
See who Dr. Gentry researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gentry 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. Andrew B. Gentry has worked on 5 clinical trials
Dmand AI links Dr. Gentry to 5 clinical trials, 2 of them phase 3 studies. Conditions studied include Colitis, Ulcerative, Eosinophilic Esophagitis and Colitis. Eli Lilly and Company sponsors the most, 2. Open Payments lists research payments to Dr. Gentry that name 1 trial.
Conditions in Dr. Gentry's trials
- Colitis, Ulcerative
- Eosinophilic Esophagitis
- Colitis
- Esophagitis
Investigators on the most trials with Dr. Gentry
- Curtis A. Baum, MD4 shared trials
- Ronald P. Fogel, MD4 shared trials
- Satinder S. Gill, MD4 shared trials
Recent clinical trials with Dr. Gentry
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Andrew B. Gentry received $3,769 in industry payments from 2016 to 2025
CMS Open Payments shows 170 general payments to Dr. Gentry from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $785. It also lists 3 research payments totaling $1,207 from 2018 to 2021, naming 1 clinical trial.
General payments to Dr. Gentry by program year, 2016 to 2025
General payments to Dr. Gentry by kind, 2016 to 2025
- Food and beverage$3,56495%
- Education$1003%
- Travel and lodging$842%
- Gifts$201%
Companies that paid Dr. Gentry 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. Andrew B. Gentry'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Andrew B. Gentry
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. Andrew B. Gentry's NPI number?
Dr. Andrew B. Gentry's NPI number is 1922072560. It was assigned on February 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew B. Gentry?
Dr. Andrew B. Gentry is a gastroenterologist in Bozeman, Montana. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Andrew B. Gentry practice?
Dr. Gentry practices at 875 S Cottonwood Road Suite 100, Bozeman, MT 59718. Dr. Gentry's primary practice is Bozeman Outpatient Surgery Center in Bozeman, Montana. Dmand AI also links Dr. Gentry to 4 hospitals, 3 group practices and clinics and 3 medical groups.
What is Dr. Andrew B. Gentry's office phone number?
The practice phone on file for Dr. Gentry is (406) 219-2800.
What is Dr. Andrew B. Gentry's medical license number?
Dr. Gentry holds Montana license 26717, one of the licenses on file in 2 states.
Which states has Dr. Andrew B. Gentry been licensed in?
Dmand AI has state licenses on file for Dr. Gentry in Montana and Virginia.
Which hospitals is Dr. Andrew B. Gentry affiliated with?
Dr. Gentry is affiliated with Bozeman Health Deaconess Regional Medical Center. Dmand AI links Dr. Gentry to 4 more hospitals.
What medical group is Dr. Andrew B. Gentry part of?
Dr. Gentry is linked to SCL Health Medical Group. Dmand AI links Dr. Gentry to 3 more medical groups.
Does Dr. Andrew B. Gentry accept Medicare?
Yes. CMS data shows Dr. Gentry billed Medicare for 753 services in 2024, and Dr. Gentry accepts Medicare assignment.
Does Dr. Andrew B. Gentry offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gentry as offering telehealth services.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Andrew B. Gentry see?
CMS counts 565 Medicare patients who saw Dr. Gentry in 2024, with an average age of 73.
What services does Dr. Andrew B. Gentry bill to Medicare?
In 2024, Dr. Gentry's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and office visit, established patient (99213).
What drugs does Dr. Andrew B. Gentry prescribe most?
In 2024 Medicare Part D data, Dr. Gentry's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Balsalazide Disodium.
Has Dr. Andrew B. Gentry received payments from drug or device companies?
CMS Open Payments shows $3,769 in general payments to Dr. Gentry from 28 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Andrew B. Gentry been practicing?
Dr. Gentry graduated from medical school in 2001, 25 years ago.
Does Dr. Andrew B. Gentry do research?
Dmand AI links 4 publications to Dr. Gentry, published from 2011 to 2022. Dr. Gentry has worked on 5 clinical trials.
Who does Dr. Andrew B. Gentry publish with?
Dr. Gentry's most frequent co-authors are William D. Chey, MD (1 shared paper), David B. King, MD (1 shared paper) and Borko Nojkov, MD (1 shared paper).
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