Dr. Thomas G. Gehlbach, MD

  • Madison, WI
  • Pulmonologist
NPI1891905600PAC ID3375692114
Medicare services, 2024
1,888
Medicare patients, 2024
613
Part D claims, 2024
1,790
Publications
2
Hospital affiliations
5
Practice address
700 South Park St, Madison, WI 53715
Practice phone
Call (608) 251-6100
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

SSM Health St. Mary's Hospital - Madison

Hospital · Madison, Wisconsin

See all 6 affiliations

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Dr. Thomas G. Gehlbach is a pulmonologist in Madison, Wisconsin

Dr. Gehlbach practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care.

Dr. Gehlbach's NPI, 1891905600, was assigned on May 23, 2007. Dr. Gehlbach graduated from University of Illinois College of Medicine - Chicago in 2004. Dr. Gehlbach's Wisconsin license number on file is 54163-20.

NPI and contact details
Medicare PAC ID
3375692114
NPI enumeration date
May 23, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(608) 251-6100
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
48
Medical school graduation
2004

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

Dr. Thomas G. Gehlbach practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin

Dr. Gehlbach's primary practice is SSM Health St. Mary's Hospital - Madison, at 700 South Park St, Madison, WI 53715 in Dane County. The practice phone is (608) 251-6100.

Source: Dmand AI Affiliation Data

Dr. Thomas G. Gehlbach is affiliated with 5 sites of care and 1 medical group

Dr. Gehlbach's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dr. Gehlbach is also affiliated with SSM Health St. Clare Hospital - Baraboo. The medical group on file is SSM Health Dean Medical Group. Dmand AI also links Dr. Gehlbach to 3 more hospitals, each named with a free account.

See all 6 affiliations for Dr. Gehlbach

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

Dmand AI tracks the EHR system at Dr. Thomas G. Gehlbach's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gehlbach practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
SSM Health St. Mary's Hospital - MadisonAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Thomas G. Gehlbach is one of 239 pulmonologists in Wisconsin

Pulmonary disease is Dr. Gehlbach's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Gehlbach is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Gehlbach's licenses on file in 3 states: Wisconsin, Illinois and Iowa.

Specialties and state licenses

  • Pulmonary disease, WisconsinPrimaryLicense 54163-20 · 2010 to 2025 · taxonomy 207RP1001X
  • Illinois licenseLicense 036-129678 · 2012 to 2023
  • Iowa license2004 to 2012

Clinical focus

Dmand AI lists asthma, chronic lung disease, chronic obstructive pulmonary disease (COPD), chronic respiratory failure, pleural effusion, pneumonia, pulmonary fibrosis and pulmonary heart disease among the conditions Dr. Gehlbach treats.

Pulmonologists near Dr. Gehlbach

Counts of pulmonologists 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. Thomas G. Gehlbach billed Medicare for 1,888 services in 2024

CMS data shows 1,888 Medicare services from Dr. Gehlbach across 18 procedure codes in 2024, for 613 Medicare patients. Medicare paid $88,060 for them.

Medicare services, 20241,888
Medicare patients613
Paid by Medicare$88,060
Procedure codes18

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

  • 2023
  • 2024
Office and hospital visits
2023: 7682024: 768No change
Tests and treatments
2023: 8082024: 65918%
Other services
2023: 722024: 336367%
Drugs given in the office
2023: 662024: 7818%
Surgery
2023: 372024: 4727%

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

  • In an office1,35972%
  • In a facility52928%

Dr. Gehlbach compared with the Wisconsin median for pulmonologists, 2024

  • Dr. Gehlbach
  • Wisconsin median
Medicare services
1,888vs 5003.8 times
Medicare patients
613vs 2232.7 times
Part D claims
1,669vs 5523.0 times

Medians across 247 pulmonologists in Wisconsin with Dmand AI profiles that report each measure.

Dr. Gehlbach'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. Gehlbach

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gehlbach and other pulmonologists in Wisconsin.

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

Dr. Thomas G. Gehlbach treated 613 Medicare patients in 2024, average age 73

CMS counts 613 Medicare patients who saw Dr. Gehlbach in 2024. The largest group is 65 to 74, with 302 patients. 73% of them have high cholesterol, and 67% have high blood pressure. 16% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Gehlbach's median patient age at 72, with 56% women.

Medicare patients, 2024613
Average age73
Average risk score1.48
Also on Medicaid16%

Dr. Gehlbach's Medicare patients by age, 2024

Dr. Gehlbach's Medicare patients by sex, 2024

  • Women35959%
  • Men25441%

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

  1. High cholesterol73%
  2. High blood pressure67%
  3. COPD52%
  4. Arthritis39%
  5. Ischemic heart disease36%
  6. Diabetes30%
  7. Heart failure30%
  8. Mood disorders27%

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

Dr. Gehlbach's patients across all payers

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

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women56%
  • Men44%

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

Dr. Thomas G. Gehlbach wrote 1,790 Medicare Part D claims in 2024

In 2024, Dr. Gehlbach wrote 1,790 Medicare Part D claims for 275 patients. 35% of them were for generic drugs. CMS names the drug for 1,669 of them, across 30 drugs with 11 or more claims each, at $654,805 in total drug cost. In 2023, CMS named 1,497 claims across 30 drugs.

Part D claims, 20241,790
Drugs named by CMS30
Total drug cost$654,805
Part D patients275

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

  • Generic623 claims35%
  • Brand-name1,167 claims65%

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

  • Antibiotics6%116 of 1,790 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: 1,4972024: 1,66911%

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

See all prescribing by Dr. Gehlbach

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. Thomas G. Gehlbach offers telehealth to Medicare patients

Dr. Gehlbach accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gehlbach as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Thomas G. Gehlbach has 2 publications on record

Dmand AI links 2 papers to Dr. Gehlbach in 2011. Dr. Gehlbach's most frequent co-authors are Gregory A. Schmidt, MD and Karl William Thomas, MD.

Papers2

Dr. Gehlbach's most frequent co-authors

Recent publications by Dr. Gehlbach

See all 2 publications and co-authors

See who Dr. Gehlbach researches with

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

How network discovery works

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

Dr. Thomas G. Gehlbach received $854 in industry payments from 2016 to 2024

CMS Open Payments shows 51 general payments to Dr. Gehlbach from 11 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 90% of the total. Sunovion Pharmaceuticals Inc. paid the most, $259.

General payments to Dr. Gehlbach by program year, 2016 to 2024

General payments to Dr. Gehlbach by kind, 2016 to 2024

$854in total
  • Food and beverage$76590%
  • Education$8910%

Companies that paid Dr. Gehlbach the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Gehlbach

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

Dr. Thomas G. Gehlbach has 1 award and honors on record

Dmand AI lists 1 award for Dr. Gehlbach, most recently CMS Stage 1 EHR in 2011.

Awards and honors for Dr. Gehlbach

  1. 2011
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Thomas G. Gehlbach graduated from University of Illinois College of Medicine - Chicago

Dr. Gehlbach graduated from University of Illinois College of Medicine - Chicago in 2004.

  1. Medical schoolUniversity of Illinois College of Medicine - Chicago
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Thomas G. Gehlbach accepts plans from 12 insurance carriers

Dr. Gehlbach is in network with 12 carriers, including Elevance, HCSC and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • Dean Health Plan
  • Alliant Health Plans
  • +4 more carriersWith a free account

Plan types Dr. Gehlbach accepts, by number of carriers

  1. Medicare7
  2. PPO7
  3. HMO6
  4. Medicaid4
  5. POS4
  6. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Thomas G. Gehlbach'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)
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. Thomas G. Gehlbach

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. Thomas G. Gehlbach's NPI number?

Dr. Thomas G. Gehlbach's NPI number is 1891905600. It was assigned on May 23, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Thomas G. Gehlbach?

Dr. Thomas G. Gehlbach is a pulmonologist in Madison, Wisconsin. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).

Where does Dr. Thomas G. Gehlbach practice?

Dr. Gehlbach practices at 700 South Park St, Madison, WI 53715. Dr. Gehlbach's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dmand AI also links Dr. Gehlbach to 3 hospitals.

What is Dr. Thomas G. Gehlbach's office phone number?

The practice phone on file for Dr. Gehlbach is (608) 251-6100.

What is Dr. Thomas G. Gehlbach's medical license number?

Dr. Gehlbach's Wisconsin license number on file is 54163-20, one of the licenses on file in 3 states.

Which states has Dr. Thomas G. Gehlbach been licensed in?

Dmand AI has state licenses on file for Dr. Gehlbach in Wisconsin (2010 to 2025), Illinois (2012 to 2023) and Iowa (2004 to 2012).

Which hospitals is Dr. Thomas G. Gehlbach affiliated with?

Dr. Gehlbach practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin. Dr. Gehlbach is also affiliated with SSM Health St. Clare Hospital - Baraboo. Dmand AI links Dr. Gehlbach to 3 more hospitals.

What medical group is Dr. Thomas G. Gehlbach part of?

Dr. Gehlbach is linked to SSM Health Dean Medical Group.

Does Dr. Thomas G. Gehlbach accept Medicare?

Yes. CMS data shows Dr. Gehlbach billed Medicare for 1,888 services in 2024, and Dr. Gehlbach accepts Medicare assignment.

Does Dr. Thomas G. Gehlbach offer telehealth?

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

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Thomas G. Gehlbach see?

CMS counts 613 Medicare patients who saw Dr. Gehlbach in 2024, with an average age of 73.

Is Dr. Thomas G. Gehlbach board certified?

Yes. Dr. Gehlbach is board certified in critical care medicine by the American Board of Internal Medicine.

What services does Dr. Thomas G. Gehlbach bill to Medicare?

In 2024, Dr. Gehlbach's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and lung function service (94729).

Where did Dr. Thomas G. Gehlbach go to medical school?

Dr. Gehlbach graduated from University of Illinois College of Medicine - Chicago in 2004.

What drugs does Dr. Thomas G. Gehlbach prescribe most?

In 2024 Medicare Part D data, Dr. Gehlbach's most prescribed drugs by claims were Trelegy Ellipta, Albuterol Sulfate Hfa and Prednisone.

Has Dr. Thomas G. Gehlbach received payments from drug or device companies?

CMS Open Payments shows $854 in general payments to Dr. Gehlbach from 11 companies from 2016 to 2024. The largest total came from Sunovion Pharmaceuticals Inc.

How long has Dr. Thomas G. Gehlbach been practicing?

Dr. Gehlbach graduated from medical school in 2004, 22 years ago.

Does Dr. Thomas G. Gehlbach do research?

Dmand AI links 2 publications to Dr. Gehlbach.

Who does Dr. Thomas G. Gehlbach publish with?

Dr. Gehlbach's most frequent co-authors are Gregory A. Schmidt, MD (1 shared paper) and Karl William Thomas, MD (1 shared paper).

What insurance does Dr. Thomas G. Gehlbach accept?

Dr. Gehlbach is in network with 12 carriers, including Elevance, HCSC and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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