Dr. Dennis T. Yamamoto, MD
- Medicare services, 2024
- 166
- Medicare patients, 2024
- 90
- Part D claims, 2024
- 369
- Hospital affiliations
- 5
- Industry payments
- $11,490
- Practice address
- 5250 Kietzke Lane, Reno, NV 89511
- Practice phone
- Call (775) 829-7600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Digestive Health Center - Reno
Surgery Center - Medicare-Certified · Reno, Nevada
Find Dr. Yamamoto's professional email, personal email and mobile number
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Dr. Dennis T. Yamamoto is a gastroenterologist in Reno, Nevada
Dr. Yamamoto practices at Digestive Health Center - Reno in Reno, Nevada.
Dr. Yamamoto's NPI, 1245294123, was assigned on April 17, 2006. Dr. Yamamoto graduated from College of Human Medicine - Grand Rapids in 1978. Dr. Yamamoto holds Nevada license 5966.
- NPI
- 1245294123NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547155061
- NPI enumeration date
- April 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (775) 829-7600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis T. Yamamoto practices at Digestive Health Center - Reno in Reno, Nevada
Dr. Yamamoto's primary practice is Digestive Health Center - Reno, at 5250 Kietzke Lane, Reno, NV 89511. The practice phone is (775) 829-7600.
- Digestive Health Center - Reno5250 Kietzke Lane, Reno, NV 89511Phone(775) 829-7600
Source: Dmand AI Affiliation Data
Dr. Dennis T. Yamamoto is affiliated with 8 sites of care and 2 medical groups
Dr. Yamamoto's primary practice is Digestive Health Center - Reno in Reno, Nevada. Dr. Yamamoto is also affiliated with Renown Regional Medical Center. The medical group on file is Digestive Health Associates. Dmand AI also links Dr. Yamamoto to 4 more hospitals, 2 group practices and clinics and 1 medical group, 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. Dennis T. Yamamoto's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yamamoto practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Digestive Health Center - Reno | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis T. Yamamoto is one of 107 gastroenterologists in Nevada
Gastroenterology is Dr. Yamamoto's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Yamamoto is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Yamamoto's licenses on file in 3 states: Nevada, Wisconsin and Michigan.
Specialties and state licenses
- Gastroenterology, NevadaPrimary
- Wisconsin license
- Michigan license
Clinical focus
Dmand AI lists acid reflux, cirrhosis of the liver, fatty liver, gastroenteritis and hepatitis c among the conditions Dr. Yamamoto treats.
Gastroenterologists near Dr. Yamamoto
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. Dennis T. Yamamoto billed Medicare for 166 services in 2024
CMS data shows 166 Medicare services from Dr. Yamamoto across 3 procedure codes in 2024, for 90 Medicare patients. Medicare paid $12,851 for them. Every service was in an office.
Dr. Yamamoto's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1372024: 1287%
- Imaging
- 2023: 532024: 3828%
Dr. Yamamoto compared with the Nevada median for gastroenterologists, 2024
- Dr. Yamamoto
- Nevada median
- Medicare services
- 166vs 75878% below
- Medicare patients
- 90vs 40078% below
- Part D claims
- 268vs 59455% below
Medians across 106 gastroenterologists in Nevada with Dmand AI profiles that report each measure.
Dr. Yamamoto'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. Yamamoto and other gastroenterologists in Nevada.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dennis T. Yamamoto treated 90 Medicare patients in 2024, average age 72
CMS counts 90 Medicare patients who saw Dr. Yamamoto in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.54, 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. Yamamoto's median patient age at 68, with 63% women.
Dr. Yamamoto's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Yamamoto's Medicare patients by sex, 2024
- Women5056%
- Men4044%
Chronic conditions among Dr. Yamamoto's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Diabetes36%
- Ischemic heart disease27%
- Mood disorders24%
- Alcohol and drug use disorders23%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yamamoto'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
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis T. Yamamoto wrote 369 Medicare Part D claims in 2024
In 2024, Dr. Yamamoto wrote 369 Medicare Part D claims for 62 patients. 76% of them were for generic drugs. CMS names the drug for 268 of them, across 11 drugs with 11 or more claims each, at $228,669 in total drug cost. In 2023, CMS named 174 claims across 7 drugs.
Dr. Yamamoto's Part D claims by kind of drug, 2024
- Generic282 claims76%
- Brand-name87 claims24%
Dr. Yamamoto'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. Yamamoto's Part D claims, 2024
- Antibiotics9%35 of 369 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: 1742024: 26854%
Drugs named by CMS: 11 in 2024, 7 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
How Dr. Dennis T. Yamamoto takes part in Medicare
Dr. Yamamoto accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Dennis T. Yamamoto received $11,490 in industry payments from 2016 to 2025
CMS Open Payments shows 464 general payments to Dr. Yamamoto from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $4,119.
General payments to Dr. Yamamoto by program year, 2016 to 2025
General payments to Dr. Yamamoto by kind, 2016 to 2025
- Food and beverage$11,37899%
- Education$1121%
Companies that paid Dr. Yamamoto 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. Dennis T. Yamamoto graduated from College of Human Medicine - Grand Rapids
Dr. Yamamoto graduated from College of Human Medicine - Grand Rapids in 1978.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Dennis T. Yamamoto accepts plans from 16 insurance carriers
Dr. Yamamoto is in network with 16 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +8 more carriersWith a free account
Plan types Dr. Yamamoto accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Dennis T. Yamamoto'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Dennis T. Yamamoto
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. Dennis T. Yamamoto's NPI number?
Dr. Dennis T. Yamamoto's NPI number is 1245294123. It was assigned on April 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis T. Yamamoto?
Dr. Dennis T. Yamamoto is a gastroenterologist in Reno, Nevada. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Dennis T. Yamamoto practice?
Dr. Yamamoto practices at 5250 Kietzke Lane, Reno, NV 89511. Dr. Yamamoto's primary practice is Digestive Health Center - Reno in Reno, Nevada. Dmand AI also links Dr. Yamamoto to 4 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Dennis T. Yamamoto's office phone number?
The practice phone on file for Dr. Yamamoto is (775) 829-7600.
What is Dr. Dennis T. Yamamoto's medical license number?
Dr. Yamamoto holds Nevada license 5966, one of the licenses on file in 3 states.
Which states has Dr. Dennis T. Yamamoto been licensed in?
Dmand AI has state licenses on file for Dr. Yamamoto in Nevada (1989 to 2027), Wisconsin (1979 to 2017) and Michigan (1979 to 1982).
Which hospitals is Dr. Dennis T. Yamamoto affiliated with?
Dr. Yamamoto is affiliated with Renown Regional Medical Center. Dmand AI links Dr. Yamamoto to 4 more hospitals.
What medical group is Dr. Dennis T. Yamamoto part of?
Dr. Yamamoto is linked to Digestive Health Associates. Dmand AI links Dr. Yamamoto to 1 more medical group.
Does Dr. Dennis T. Yamamoto accept Medicare?
Yes. CMS data shows Dr. Yamamoto billed Medicare for 166 services in 2024, and Dr. Yamamoto accepts Medicare assignment.
How many Medicare patients does Dr. Dennis T. Yamamoto see?
CMS counts 90 Medicare patients who saw Dr. Yamamoto in 2024, with an average age of 72.
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Is Dr. Dennis T. Yamamoto board certified?
Yes. Dr. Yamamoto is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Dennis T. Yamamoto bill to Medicare?
In 2024, Dr. Yamamoto's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and ultrasound (76981).
Where did Dr. Dennis T. Yamamoto go to medical school?
Dr. Yamamoto graduated from College of Human Medicine - Grand Rapids in 1978.
What drugs does Dr. Dennis T. Yamamoto prescribe most?
In 2024 Medicare Part D data, Dr. Yamamoto's most prescribed drugs by claims were Spironolactone, Ursodiol and Furosemide.
Has Dr. Dennis T. Yamamoto received payments from drug or device companies?
CMS Open Payments shows $11,490 in general payments to Dr. Yamamoto from 43 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Dennis T. Yamamoto been practicing?
Dr. Yamamoto graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Dennis T. Yamamoto accept?
Dr. Yamamoto is in network with 16 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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