Dr. Michael J. Guirl, MD

  • San Antonio, TX
  • Gastroenterologist
NPI1962496711PAC ID7315932902
Medicare services, 2024
1,139
Medicare patients, 2024
733
Part D claims, 2024
1,623
Publications
3
MIPS score, 2024
81
Practice address
855 Proton Drive, San Antonio, TX 78258
Practice phone
Call (210) 614-1234
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

GCSA Stone Oak

Surgery Center - Medicare-Certified · San Antonio, Texas

See all 5 affiliations

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Dr. Michael J. Guirl is a gastroenterologist in San Antonio, Texas

Dr. Guirl practices at GCSA Stone Oak in San Antonio, Texas.

Dr. Guirl's NPI, 1962496711, was assigned on September 8, 2005. Dr. Guirl graduated from Baylor College Of Medicine in 1997. Dr. Guirl holds Texas license K5545.

NPI and contact details
Medicare PAC ID
7315932902
NPI enumeration date
September 8, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(210) 614-1234
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
55
Medical school graduation
1997

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

Dr. Michael J. Guirl practices at GCSA Stone Oak in San Antonio, Texas

Dr. Guirl's primary practice is GCSA Stone Oak, at 855 Proton Drive, San Antonio, TX 78258. The practice phone is (210) 614-1234.

  • GCSA Stone Oak
    855 Proton Drive, San Antonio, TX 78258Phone(210) 614-1234

Source: Dmand AI Affiliation Data

Dr. Michael J. Guirl is affiliated with 3 sites of care and 2 medical groups

Dr. Guirl's primary practice is GCSA Stone Oak in San Antonio, Texas. Dr. Guirl is also affiliated with Baptist Medical Center. The medical group on file is Texas Digestive Disease Consultants. Dmand AI also links Dr. Guirl to 1 more hospital and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Guirl

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

Dmand AI tracks the EHR system at Dr. Michael J. Guirl's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guirl practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
GCSA Stone OakAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Michael J. Guirl is one of 1,341 gastroenterologists in Texas

Gastroenterology is Dr. Guirl's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Guirl is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Guirl is licensed in Texas.

Specialties and state licenses

  • Gastroenterology, TexasPrimaryLicense K5545 · 1998 to 2027 · taxonomy 207RG0100X

Clinical focus

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver, gastrointestinal bleeding, hemorrhoids and hepatitis c among the conditions Dr. Guirl treats.

Gastroenterologists near Dr. Guirl

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. Michael J. Guirl billed Medicare for 1,139 services in 2024

CMS data shows 1,139 Medicare services from Dr. Guirl across 15 procedure codes in 2024, for 733 Medicare patients. Medicare paid $140,841 for them.

Medicare services, 20241,139
Medicare patients733
Paid by Medicare$140,841
Procedure codes15

Dr. Guirl's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 5122024: 64526%
Office and hospital visits
2023: 4462024: 31629%
Other services
2023: 1452024: 1461%
Tests and treatments
2023: 212024: 3252%

Where Dr. Guirl's Medicare services took place, 2024

  • In an office34831%
  • In a facility79169%

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

  • Dr. Guirl
  • Texas median
Medicare services
1,139vs 5052.3 times
Medicare patients
733vs 2842.6 times
Part D claims
1,432vs 4932.9 times

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

Dr. Guirl'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.

See all procedures by Dr. Guirl

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

Dr. Michael J. Guirl treated 733 Medicare patients in 2024, average age 73

CMS counts 733 Medicare patients who saw Dr. Guirl in 2024. The largest group is 65 to 74, with 430 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 2% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Guirl's median patient age at 65, with 50% women.

Medicare patients, 2024733
Average age73
Average risk score1.04
Also on Medicaid2%

Dr. Guirl's Medicare patients by age, 2024

Dr. Guirl's Medicare patients by sex, 2024

  • Women39153%
  • Men34247%

Chronic conditions among Dr. Guirl's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure70%
  3. Arthritis49%
  4. Ischemic heart disease29%
  5. Diabetes23%
  6. Chronic kidney disease22%
  7. Mood disorders20%
  8. Anxiety19%

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

Dr. Guirl's patients across all payers

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

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women50%
  • Men49%

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

Dr. Michael J. Guirl wrote 1,623 Medicare Part D claims in 2024

In 2024, Dr. Guirl wrote 1,623 Medicare Part D claims for 722 patients. 66% of them were for generic drugs. CMS names the drug for 1,432 of them, across 30 drugs with 11 or more claims each, at $206,554 in total drug cost. In 2023, CMS named 1,640 claims across 30 drugs.

Part D claims, 20241,623
Drugs named by CMS30
Total drug cost$206,554
Part D patients722

Dr. Guirl's Part D claims by kind of drug, 2024

  • Generic1,076 claims66%
  • Brand-name and other547 claims34%

Dr. Guirl'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. Guirl's Part D claims, 2024

  • Antibiotics3%44 of 1,623 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: 1,6402024: 1,43213%

Drugs named by CMS: 30 in 2024, 30 in 2023.

See all prescribing by Dr. Guirl

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. Michael J. Guirl scored 81 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Guirl for performance year 2024, reported as part of a group. Dr. Guirl accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Guirl as offering telehealth. CMS counts 169 procedures of colonoscopy by Dr. Guirl, more than 91% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Guirl's MIPS scores, performance year 2024

  • 81of 100Final score
  • 66.5of 100Quality
  • 98of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 72of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Guirl ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
89th percentile185 procedures
Colonoscopy
91st percentile169 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Michael J. Guirl has 3 publications on record

Dmand AI links 3 papers to Dr. Guirl. The most frequent topics are Feces. Dr. Guirl's most frequent co-authors are Michael Emmett, MD, Goran B. G. Klintmalm, MD and Sidney Neimark, MD.

Papers3

Topics Dr. Guirl writes about most

  • Feces

Dr. Guirl's most frequent co-authors

Recent publications by Dr. Guirl

See all 3 publications and co-authors

See who Dr. Guirl researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guirl 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. Michael J. Guirl received $10,489 in industry payments from 2016 to 2025

CMS Open Payments shows 661 general payments to Dr. Guirl from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $3,253.

General payments to Dr. Guirl by program year, 2016 to 2025

Companies that paid Dr. Guirl the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Guirl

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

Dr. Michael J. Guirl has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Guirl, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Guirl

  1. 2013
    • CMS Stage 1 EHR
  2. Undated
    • ACG Fellow

Source: Dmand AI Professional Profile Data

Dr. Michael J. Guirl graduated from Baylor College Of Medicine

Dr. Guirl graduated from Baylor College Of Medicine in 1997. Dr. Guirl is a member of ACG.

  1. Medical schoolBaylor College Of Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Michael J. Guirl accepts plans from 23 insurance carriers

Dr. Guirl is in network with 23 carriers, including Elevance, Aetna and United Healthcare. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.

Plan types Dr. Guirl accepts, by number of carriers

  1. HMO13
  2. PPO13
  3. Medicare11
  4. POS6
  5. EPO4
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Michael J. Guirl'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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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)
Awards and committee rolesDmand AI Professional Profile Data
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. Michael J. Guirl

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. Michael J. Guirl's NPI number?

Dr. Michael J. Guirl's NPI number is 1962496711. It was assigned on September 8, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Michael J. Guirl?

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

Where does Dr. Michael J. Guirl practice?

Dr. Guirl practices at 855 Proton Drive, San Antonio, TX 78258. Dr. Guirl's primary practice is GCSA Stone Oak in San Antonio, Texas. Dmand AI also links Dr. Guirl to 1 hospital and 1 medical group.

What is Dr. Michael J. Guirl's office phone number?

The practice phone on file for Dr. Guirl is (210) 614-1234.

What is Dr. Michael J. Guirl's medical license number?

Dr. Guirl holds Texas license K5545.

Which hospitals is Dr. Michael J. Guirl affiliated with?

Dr. Guirl is affiliated with Baptist Medical Center. Dmand AI links Dr. Guirl to 1 more hospital.

What medical group is Dr. Michael J. Guirl part of?

Dr. Guirl is linked to Texas Digestive Disease Consultants. Dmand AI links Dr. Guirl to 1 more medical group.

Does Dr. Michael J. Guirl accept Medicare?

Yes. CMS data shows Dr. Guirl billed Medicare for 1,139 services in 2024, and Dr. Guirl accepts Medicare assignment.

Does Dr. Michael J. Guirl offer telehealth?

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

What is Dr. Michael J. Guirl's MIPS score?

Dr. Guirl's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Michael J. Guirl see?

CMS counts 733 Medicare patients who saw Dr. Guirl in 2024, with an average age of 73.

Is Dr. Michael J. Guirl board certified?

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

What services does Dr. Michael J. Guirl bill to Medicare?

In 2024, Dr. Guirl's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and office visit, new patient (99204).

Where did Dr. Michael J. Guirl go to medical school?

Dr. Guirl graduated from Baylor College Of Medicine in 1997.

What drugs does Dr. Michael J. Guirl prescribe most?

In 2024 Medicare Part D data, Dr. Guirl's most prescribed drugs by claims were Pantoprazole Sodium, Peg-3350 And Electrolytes and Omeprazole.

Has Dr. Michael J. Guirl received payments from drug or device companies?

CMS Open Payments shows $10,489 in general payments to Dr. Guirl from 43 companies from 2016 to 2025. The largest total came from Abbvie Inc.

How long has Dr. Michael J. Guirl been practicing?

Dr. Guirl graduated from medical school in 1997, 29 years ago.

Does Dr. Michael J. Guirl do research?

Dmand AI links 3 publications to Dr. Guirl.

Who does Dr. Michael J. Guirl publish with?

Dr. Guirl's most frequent co-authors are Michael Emmett, MD (1 shared paper), Goran B. G. Klintmalm, MD (1 shared paper) and Sidney Neimark, MD (1 shared paper).

What insurance does Dr. Michael J. Guirl accept?

Dr. Guirl is in network with 23 carriers, including Elevance, Aetna and United Healthcare. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.

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