Dr. Dennis Anthony Ruff, MD

  • San Antonio, TX
  • Internist
NPI1003035718
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
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Mobile number
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Social profiles

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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 and contact details
NPI enumeration date
April 24, 2007
NPI status
Active
Practice phone
(210) 798-5112
Professional email
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Personal email
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Mobile number
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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 address
    8307 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.

EHR by site
SiteEHR vendor and product
Dr. Ruff's practiceAvailable 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, TexasPrimaryLicense G9525 · 1986 to 2027 · taxonomy 207R00000X
  • Pennsylvania license1983 to 2000

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.

Papers13
Years published2012 to 2022

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

Recent publications by Dr. Ruff

See all 13 publications and co-authors

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.

How network discovery works

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

  1. NonePhase 1: no trials
  2. 4Phase 2: 4 trials
  3. 1Phase 2/3: 1 trial
  4. NonePhase 3: no trials
  5. 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

Recent clinical trials with Dr. Ruff

See all 10 clinical trials and co-investigators

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

$1.1Kin total
  • 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.

See all payments to Dr. Ruff

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.

  1. Medical schoolAlbany Medical College
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Dennis Anthony Ruff's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Dennis Anthony Ruff

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 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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