Dr. John Quiles, MD

  • San Antonio, TX
  • Gastroenterologist
NPI1033347695PAC ID9931340338
Medicare services, 2024
253
Medicare patients, 2024
164
Part D claims, 2018
11
Publications
5
Hospital affiliations
5
Practice address
621 Camden Street, San Antonio, TX 78215
Practice phone
Call (210) 253-3430
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

GAB Endoscopy Center

Surgery Center - Medicare-Certified · San Antonio, Texas

See all 12 affiliations

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Dr. John Quiles is a gastroenterologist in San Antonio, Texas

Dr. Quiles practices at GAB Endoscopy Center in San Antonio, Texas.

Dr. Quiles' NPI, 1033347695, was assigned on June 22, 2009. Dr. Quiles graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 2009. Dr. Quiles holds Texas license T1181.

NPI and contact details
Medicare PAC ID
9931340338
NPI enumeration date
June 22, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(210) 253-3430
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
43
Medical school graduation
2009

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. John Quiles practices at GAB Endoscopy Center in San Antonio, Texas

Dr. Quiles' primary practice is GAB Endoscopy Center, at 621 Camden Street, San Antonio, TX 78215. The practice phone is (210) 253-3430.

  • GAB Endoscopy Center
    621 Camden Street, San Antonio, TX 78215Phone(210) 253-3430

Source: Dmand AI Affiliation Data

Dr. John Quiles is affiliated with 7 sites of care and 5 medical groups

Dr. Quiles' primary practice is GAB Endoscopy Center in San Antonio, Texas. Dr. Quiles is also affiliated with University Hospital. The medical group on file is Texas Digestive Disease Consultants. Dmand AI also links Dr. Quiles to 4 more hospitals, 4 medical groups and 1 group practice or clinic, each named with a free account.

See all 12 affiliations for Dr. Quiles

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. John Quiles' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Quiles practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
GAB Endoscopy CenterAvailable with a free account
+6 more sites and 4 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. John Quiles is one of 1,341 gastroenterologists in Texas

Gastroenterology is Dr. Quiles' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Quiles is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Quiles' licenses on file in 3 states: Texas, Indiana and Virginia.

Specialties and state licenses

  • Gastroenterology, TexasPrimaryLicense T1181 · 2021 to 2027 · taxonomy 207RG0100X
  • Indiana licenseLicense 01079498A
  • Internal medicine, VirginiaLicense 0101249078 · 2011 to 2026 · taxonomy 207R00000X

Clinical focus

Dmand AI lists acute gallbladder or bile duct inflammation, colonoscopy and upper GI endoscopy among the conditions Dr. Quiles treats.

Gastroenterologists near Dr. Quiles

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. John Quiles billed Medicare for 253 services in 2024

CMS data shows 253 Medicare services from Dr. Quiles across 7 procedure codes in 2024, for 164 Medicare patients. Medicare paid $21,797 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024253
Medicare patients164
Paid by Medicare$21,797
Procedure codes7

Dr. Quiles' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1902024: 21111%
Surgery
2023: 292024: 4245%

Dr. Quiles compared with the Texas median for gastroenterologists, 2024

  • Dr. Quiles
  • Texas median
Medicare services
253vs 50550% below
Medicare patients
164vs 28442% below
Part D claims
11vs 49398% below

Medians across 1,281 gastroenterologists in Texas with Dmand AI profiles that report each measure.

Dr. Quiles' 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.

See all procedures by Dr. Quiles

Need commercial claims for Dr. Quiles?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Quiles and other gastroenterologists in Texas.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. John Quiles treated 164 Medicare patients in 2024, average age 75

CMS counts 164 Medicare patients who saw Dr. Quiles in 2024. The largest group is 65 to 74, with 66 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.74, 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. Quiles' median patient age at 64, with 51% women.

Medicare patients, 2024164
Average age75
Average risk score2.74
Also on Medicaid34%

Dr. Quiles' Medicare patients by age, 2024

Dr. Quiles' Medicare patients by sex, 2024

  • Women7848%
  • Men8652%

Chronic conditions among Dr. Quiles' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes62%
  4. Ischemic heart disease60%
  5. Chronic kidney disease55%
  6. Heart failure50%
  7. Arthritis47%
  8. Mood disorders42%

Share of Medicare patients with each condition. A patient can have several.

Dr. Quiles' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women51%
  • Men48%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. John Quiles wrote 11 Medicare Part D claims in 2018

In 2018, Dr. Quiles wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $49 in total drug cost.

Part D claims, 201811
Drugs named by CMS1
Total drug cost$49

Dr. Quiles' most prescribed drugs by claims, 2018

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

See all prescribing by Dr. Quiles

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

Dr. John Quiles ranks in the 92nd percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare

Dr. Quiles accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Quiles as offering telehealth. CMS counts 232 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Quiles, more than 92% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Dr. Quiles ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
92nd percentile232 procedures
Colonoscopy
69th percentile63 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. John Quiles has 5 publications on record

Dmand AI links 5 papers to Dr. Quiles, published from 2021 to 2024. 2023 was the busiest year, with 2. Dr. Quiles has published most often in ACG Case Rep J. Dr. Quiles' most frequent co-authors are Peter B. Cotton, MD, Michael Austin Craig, MD and Cyrus Veryl Edelson, MD.

Papers5
Years published2021 to 2024

Dr. Quiles' papers by year, 2021 to 2024

Dr. Quiles' most frequent co-authors

Recent publications by Dr. Quiles

See all 5 publications and co-authors

See who Dr. Quiles researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Quiles works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. John Quiles received $5,205 in industry payments from 2018 to 2025

CMS Open Payments shows 52 general payments to Dr. Quiles from 10 drug and device companies from 2018 to 2025. Travel and lodging make up the largest share, 60% of the total. Boston Scientific Corporation paid the most, $2,151.

General payments to Dr. Quiles by program year, 2018 to 2025

General payments to Dr. Quiles by kind, 2018 to 2025

$5.2Kin total
  • Travel and lodging$3,11660%
  • Food and beverage$1,46628%
  • Education$54811%
  • Grants$751%

Companies that paid Dr. Quiles the most, 2018 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Quiles

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. John Quiles graduated from Uniformed Services University, F. Edward Hebert School of Medicine

Dr. Quiles graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 2009.

  1. Medical schoolUniformed Services University, F. Edward Hebert School of Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. John Quiles accepts plans from 24 insurance carriers

Dr. Quiles is in network with 24 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.

Plan types Dr. Quiles accepts, by number of carriers

  1. HMO13
  2. PPO13
  3. Medicare12
  4. POS6
  5. EPO4
  6. Medicaid4

Source: Dmand AI Insurance Network Data

Sources for Dr. John Quiles'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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. John Quiles

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. John Quiles' NPI number?

Dr. John Quiles' NPI number is 1033347695. It was assigned on June 22, 2009, and it is active in the NPI Registry.

What kind of doctor is Dr. John Quiles?

Dr. John Quiles is a gastroenterologist in San Antonio, Texas. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. John Quiles practice?

Dr. Quiles practices at 621 Camden Street, San Antonio, TX 78215. Dr. Quiles' primary practice is GAB Endoscopy Center in San Antonio, Texas. Dmand AI also links Dr. Quiles to 4 hospitals, 4 medical groups and 1 group practice or clinic.

What is Dr. John Quiles' office phone number?

The practice phone on file for Dr. Quiles is (210) 253-3430.

What is Dr. John Quiles' medical license number?

Dr. Quiles holds Texas license T1181, one of the licenses on file in 3 states.

Which states has Dr. John Quiles been licensed in?

Dmand AI has state licenses on file for Dr. Quiles in Texas (2021 to 2027), Indiana and Virginia (2011 to 2026).

Which hospitals is Dr. John Quiles affiliated with?

Dr. Quiles is affiliated with University Hospital. Dmand AI links Dr. Quiles to 4 more hospitals.

What medical group is Dr. John Quiles part of?

Dr. Quiles is linked to Texas Digestive Disease Consultants. Dmand AI links Dr. Quiles to 4 more medical groups.

Does Dr. John Quiles accept Medicare?

Yes. CMS data shows Dr. Quiles billed Medicare for 253 services in 2024, and Dr. Quiles accepts Medicare assignment.

Does Dr. John Quiles offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Quiles as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. John Quiles see?

CMS counts 164 Medicare patients who saw Dr. Quiles in 2024, with an average age of 75.

Is Dr. John Quiles board certified?

Yes. Dr. Quiles is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Dr. John Quiles bill to Medicare?

In 2024, Dr. Quiles' most billed Medicare services were hospital inpatient care (99222), hospital inpatient care (99233) and hospital inpatient care (99232).

Where did Dr. John Quiles go to medical school?

Dr. Quiles graduated from Uniformed Services University, F. Edward Hebert School of Medicine in 2009.

What drugs does Dr. John Quiles prescribe most?

In 2018 Medicare Part D data, Dr. Quiles' most prescribed drugs by claims were Ciprofloxacin HCl.

Has Dr. John Quiles received payments from drug or device companies?

CMS Open Payments shows $5,205 in general payments to Dr. Quiles from 10 companies from 2018 to 2025. The largest total came from Boston Scientific Corporation.

How long has Dr. John Quiles been practicing?

Dr. Quiles graduated from medical school in 2009, 17 years ago.

Does Dr. John Quiles do research?

Dmand AI links 5 publications to Dr. Quiles, published from 2021 to 2024.

Who does Dr. John Quiles publish with?

Dr. Quiles' most frequent co-authors are Peter B. Cotton, MD (1 shared paper), Michael Austin Craig, MD (1 shared paper) and Cyrus Veryl Edelson, MD (1 shared paper).

What insurance does Dr. John Quiles accept?

Dr. Quiles is in network with 24 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.

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