Dr. Dennis Anthony Ruff, MD
- Publications
- 13
- Clinical trials
- 10
- Industry payments
- $1,050
- State licenses
- 2
- Year NPI issued
- 2007
- Practice address
- 8307 Gault Ln, San Antonio, TX 78209-1028
- Practice phone
- Call (210) 798-5112
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ruff'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. Dennis Anthony Ruff is an internist in San Antonio, Texas
Dr. Ruff practices in San Antonio, Texas.
Dr. Ruff's NPI, 1003035718, was assigned on April 24, 2007. Dr. Ruff graduated from Albany Medical College in 1982. Dr. Ruff holds Texas license G9525.
- NPI
- 1003035718NPI Registry (opens in a new tab)
- NPI enumeration date
- April 24, 2007
- NPI status
- Active
- Practice phone
- (210) 798-5112
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Dennis Anthony Ruff's practice address is in San Antonio, Texas
Dr. Ruff's practice address in the NPI Registry is 8307 Gault Ln, San Antonio, TX 78209-1028. The practice phone is (210) 798-5112.
- NPI Registry address8307 Gault Ln, San Antonio, TX 78209-1028Phone(210) 798-5112
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Dennis Anthony Ruff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ruff practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Ruff's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis Anthony Ruff is one of 8,437 internists in Texas
Internal medicine is Dr. Ruff's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ruff is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ruff's licenses on file in 2 states: Texas and Pennsylvania.
Specialties and state licenses
- Internal medicine, TexasPrimary
- Pennsylvania license
Internists near Dr. Ruff
Counts of internists 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 Anthony Ruff has 13 publications on record
Dmand AI links 13 papers to Dr. Ruff, published from 2012 to 2022. 2013 was the busiest year, with 4. The most frequent topics are Blood Glucose, Glucagon-Like Peptide 1 and Healthy Volunteers. Dr. Ruff has published most often in Clin Pharmacol Drug Dev. Dr. Ruff's most frequent co-authors are Jason P. Bronner, MD, Philip M. Brown, MD and John Paul Huff, MD, PhD.
Dr. Ruff's papers by year, 2012 to 2022
Topics Dr. Ruff writes about most
- Blood Glucose
- Glucagon-Like Peptide 1
- Healthy Volunteers
- Administration, Oral
- Area Under Curve
- Double-Blind Method
- Glycosides
- Hypoglycemic Agents
Dr. Ruff's most frequent co-authors
- Jason P. Bronner, MD1 shared paper
- Philip M. Brown, MD1 shared paper
- John Paul Huff, MD, PhD1 shared paper
Recent publications by Dr. Ruff
Clin Pharmacol Drug Dev
See who Dr. Ruff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ruff works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Dennis Anthony Ruff has worked on 10 clinical trials
Dmand AI links Dr. Ruff to 10 clinical trials, 4 of them phase 2 studies. 9 are still active or recruiting. Conditions studied include Adenocarcinoma of Lung, Biliary Atresia and Low Back Pain.
Clinical trials with Dr. Ruff by phase
- NonePhase 1: no trials
- 4Phase 2: 4 trials
- 1Phase 2/3: 1 trial
- NonePhase 3: no trials
- NonePhase 4: no trials
Trials with no phase (devices, behavioral studies) are left out.
Conditions in Dr. Ruff's trials
- Adenocarcinoma of Lung
- Biliary Atresia
- Low Back Pain
- Malocclusion
- Muscular Atrophy
Investigators on the most trials with Dr. Ruff
- Kader Tawfiq Abdelerahman, MD10 shared trials
- Randa Abdelmasih, MD10 shared trials
- Marjorie E. Affel, MD10 shared trials
Recent clinical trials with Dr. Ruff
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Dennis Anthony Ruff received $1,050 in industry payments from 2017 to 2025
CMS Open Payments shows 4 general payments to Dr. Ruff from 2 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 95% of the total. Merck Sharp & Dohme Corporation paid the most, $1,000.
General payments to Dr. Ruff by program year, 2017 to 2025
General payments to Dr. Ruff by kind, 2017 to 2025
- Consulting fees$1,00095%
- Food and beverage$505%
Companies that paid Dr. Ruff the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dennis Anthony Ruff graduated from Albany Medical College
Dr. Ruff graduated from Albany Medical College in 1982.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Dennis Anthony Ruff'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| 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) |
| 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. Dennis Anthony Ruff
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What is Dr. Dennis Anthony Ruff's NPI number?
Dr. Dennis Anthony Ruff's NPI number is 1003035718. It was assigned on April 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis Anthony Ruff?
Dr. Dennis Anthony Ruff is an internist in San Antonio, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dennis Anthony Ruff practice?
Dr. Ruff practices at 8307 Gault Ln, San Antonio, TX 78209-1028.
What is Dr. Dennis Anthony Ruff's office phone number?
The practice phone on file for Dr. Ruff is (210) 798-5112.
What is Dr. Dennis Anthony Ruff's medical license number?
Dr. Ruff holds Texas license G9525, one of the licenses on file in 2 states.
Which states has Dr. Dennis Anthony Ruff been licensed in?
Dmand AI has state licenses on file for Dr. Ruff in Texas (1986 to 2027) and Pennsylvania (1983 to 2000).
Is Dr. Dennis Anthony Ruff board certified?
Yes. Dr. Ruff is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Dennis Anthony Ruff go to medical school?
Dr. Ruff graduated from Albany Medical College in 1982.
Has Dr. Dennis Anthony Ruff received payments from drug or device companies?
CMS Open Payments shows $1,050 in general payments to Dr. Ruff from 2 companies from 2017 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Dennis Anthony Ruff been practicing?
Dr. Ruff graduated from medical school in 1982, 44 years ago.
Does Dr. Dennis Anthony Ruff do research?
Dmand AI links 13 publications to Dr. Ruff, published from 2012 to 2022. Dr. Ruff has worked on 10 clinical trials.
Who does Dr. Dennis Anthony Ruff publish with?
Dr. Ruff's most frequent co-authors are Jason P. Bronner, MD (1 shared paper), Philip M. Brown, MD (1 shared paper) and John Paul Huff, MD, PhD (1 shared paper).
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