Dr. Stewart Lee Schaefer, MD

  • Austin, TX
  • Internist
NPI1669867834PAC ID2365745445
Medicare services, 2024
246
Medicare patients, 2024
111
Part D claims, 2024
24
Publications
1
Hospital affiliations
2
Practice address
601 E 15th Street, Austin, TX 78701
Practice phone
Call (512) 324-7000
Professional email
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Personal email
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Mobile number
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Social profiles

Find Dr. Schaefer's professional email, personal email and mobile number

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Dr. Stewart Lee Schaefer is an internist in Austin, Texas

Dr. Schaefer practices at Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance.

Dr. Schaefer's NPI, 1669867834, was assigned on April 3, 2015. Dr. Schaefer graduated from Joe R. & Teresa Lozano Long School of Medicine in 2015. Dr. Schaefer holds Texas license R6475.

NPI and contact details
Medicare PAC ID
2365745445
NPI enumeration date
April 3, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(512) 324-7000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
37
Medical school graduation
2015

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

Dr. Stewart Lee Schaefer practices at 2 locations in Austin, Texas

Dr. Schaefer's primary practice is Dell Seton Medical Center at the University of Texas, at 601 E 15th Street, Austin, TX 78701 in Travis County. The practice phone is (512) 324-7000. Dr. Schaefer also practices at Dell Seton Medical Center at University of Texas, 1500 Red River St, Austin, TX 78701.

  • Dell Seton Medical Center at the University of TexasPrimary
    601 E 15th Street, Austin, TX 78701 · Travis CountyPhone(512) 324-7000
  • Dell Seton Medical Center at University of Texas
    1500 Red River St, Austin, TX 78701 · Travis CountyPhone(512) 324-7000

Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data

Dr. Stewart Lee Schaefer is affiliated with 3 sites of care and 1 medical group

Dr. Schaefer's primary practice is Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance. Dr. Schaefer is also affiliated with Ascension Seton Medical Center Austin. The medical group on file is Seton Family of Doctors. Dmand AI also links Dr. Schaefer to 1 more clinical lab, named with a free account.

See all 4 affiliations for Dr. Schaefer

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

Dmand AI tracks the EHR system at Dr. Stewart Lee Schaefer's practice

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

EHR by site
SiteEHR vendor and product
Dell Seton Medical Center at The University of TexasAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Stewart Lee Schaefer is one of 8,437 internists in Texas

Internal medicine is Dr. Schaefer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Schaefer is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Schaefer's licenses on file in 2 states: Texas and Washington.

Specialties and state licenses

  • Internal medicine, TexasPrimaryLicense R6475 · 2018 to 2027 · taxonomy 207R00000X
  • Washington license2015 to 2018

Clinical focus

Dmand AI lists bile duct problems, circulation problems, congestive heart failure, heart attack, pneumonia and respiratory infection, psychoses, sepsis and stroke among the conditions Dr. Schaefer treats.

Internists near Dr. Schaefer

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. Stewart Lee Schaefer billed Medicare for 246 services in 2024

CMS data shows 246 Medicare services from Dr. Schaefer across 4 procedure codes in 2024, for 111 Medicare patients. Medicare paid $19,843 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024246
Medicare patients111
Paid by Medicare$19,843
Procedure codes4

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

  • 2023
  • 2024
Office and hospital visits
2023: 1802024: 24637%

Dr. Schaefer compared with the Texas median for internists, 2024

  • Dr. Schaefer
  • Texas median
Medicare services
246vs 53954% below
Medicare patients
111vs 19042% below

Medians across 7,794 internists in Texas with Dmand AI profiles that report each measure.

Dr. Schaefer'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. Schaefer

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

Dr. Stewart Lee Schaefer treated 111 Medicare patients in 2024, average age 73

CMS counts 111 Medicare patients who saw Dr. Schaefer in 2024. The largest group is 75 to 84, with 41 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 21% are also on Medicaid. Their average risk score is 2.22, 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. Schaefer's median patient age at 70, with 44% women.

Medicare patients, 2024111
Average age73
Average risk score2.22
Also on Medicaid21%

Dr. Schaefer's Medicare patients by age, 2024

Dr. Schaefer's Medicare patients by sex, 2024

  • Women5751%
  • Men5449%

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

  1. High blood pressure75%
  2. High cholesterol70%
  3. Arthritis46%
  4. Ischemic heart disease46%
  5. Chronic kidney disease42%
  6. Heart failure40%
  7. Diabetes39%
  8. Mood disorders39%

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

Dr. Schaefer's patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women44%
  • Men56%

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

Dr. Stewart Lee Schaefer wrote 24 Medicare Part D claims in 2024

In 2024, Dr. Schaefer wrote 24 Medicare Part D claims for 15 patients. 92% of them were for generic drugs.

Part D claims, 202424
Part D patients15

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

  • Generic22 claims92%
  • Brand-name and other2 claims8%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Stewart Lee Schaefer takes part in Medicare

Dr. Schaefer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Stewart Lee Schaefer has 1 publication on record

Dmand AI links 1 paper to Dr. Schaefer. Dr. Schaefer's most frequent co-authors are William Michael Brode, MD, Christopher Paul Moriates, MD and Kirsten Gibbs Nieto, MD.

Papers1

Dr. Schaefer's most frequent co-authors

Recent publications by Dr. Schaefer

See all 1 publications and co-authors

See who Dr. Schaefer researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Schaefer 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. Stewart Lee Schaefer received $22 in industry payments in 2018

CMS Open Payments shows 1 general payment to Dr. Schaefer from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $22.

Companies that paid Dr. Schaefer the most, 2018 to 2018

Share is of all general payments to this clinician.

See all payments to Dr. Schaefer

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

Dr. Stewart Lee Schaefer graduated from Joe R. & Teresa Lozano Long School of Medicine

Dr. Schaefer graduated from Joe R. & Teresa Lozano Long School of Medicine in 2015.

  1. Medical schoolJoe R. & Teresa Lozano Long School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Stewart Lee Schaefer accepts plans from 19 insurance carriers

Dr. Schaefer is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Alliant Health Plans
  • Blue Cross Blue Shield of Massachusetts
  • Elevance
  • HCSC
  • Regence Health Plans
  • +11 more carriersWith a free account

Plan types Dr. Schaefer accepts, by number of carriers

  1. PPO13
  2. HMO9
  3. Medicare6
  4. POS4
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Stewart Lee Schaefer'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 Affiliation DataDmand AI Practice 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 (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)
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. Stewart Lee Schaefer

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. Stewart Lee Schaefer's NPI number?

Dr. Stewart Lee Schaefer's NPI number is 1669867834. It was assigned on April 3, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Stewart Lee Schaefer?

Dr. Stewart Lee Schaefer is an internist in Austin, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Stewart Lee Schaefer practice?

Dr. Schaefer practices at 601 E 15th Street, Austin, TX 78701. Dr. Schaefer also practices at 1500 Red River St, Austin, TX 78701. Dr. Schaefer's primary practice is Dell Seton Medical Center at The University of Texas in Austin, Texas, part of Ascension Health Alliance. Dmand AI also links Dr. Schaefer to 1 clinical lab.

What is Dr. Stewart Lee Schaefer's office phone number?

The practice phone on file for Dr. Schaefer is (512) 324-7000.

What is Dr. Stewart Lee Schaefer's medical license number?

Dr. Schaefer holds Texas license R6475, one of the licenses on file in 2 states.

Which states has Dr. Stewart Lee Schaefer been licensed in?

Dmand AI has state licenses on file for Dr. Schaefer in Texas (2018 to 2027) and Washington (2015 to 2018).

Which hospitals is Dr. Stewart Lee Schaefer affiliated with?

Dr. Schaefer practices at Dell Seton Medical Center at The University of Texas in Austin, Texas. Dr. Schaefer is also affiliated with Ascension Seton Medical Center Austin.

What medical group is Dr. Stewart Lee Schaefer part of?

Dr. Schaefer is linked to Seton Family of Doctors.

Does Dr. Stewart Lee Schaefer accept Medicare?

Yes. CMS data shows Dr. Schaefer billed Medicare for 246 services in 2024, and Dr. Schaefer accepts Medicare assignment.

How many Medicare patients does Dr. Stewart Lee Schaefer see?

CMS counts 111 Medicare patients who saw Dr. Schaefer in 2024, with an average age of 73.

Show 8 more questionsShow fewer questions

Is Dr. Stewart Lee Schaefer board certified?

Yes. Dr. Schaefer is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Stewart Lee Schaefer bill to Medicare?

In 2024, Dr. Schaefer's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99238).

Where did Dr. Stewart Lee Schaefer go to medical school?

Dr. Schaefer graduated from Joe R. & Teresa Lozano Long School of Medicine in 2015.

Has Dr. Stewart Lee Schaefer received payments from drug or device companies?

CMS Open Payments shows $22 in general payments to Dr. Schaefer from 1 company from 2018 to 2018. The largest total came from CSL Behring.

How long has Dr. Stewart Lee Schaefer been practicing?

Dr. Schaefer graduated from medical school in 2015, 11 years ago.

Does Dr. Stewart Lee Schaefer do research?

Dmand AI links 1 publication to Dr. Schaefer.

Who does Dr. Stewart Lee Schaefer publish with?

Dr. Schaefer's most frequent co-authors are William Michael Brode, MD (1 shared paper), Christopher Paul Moriates, MD (1 shared paper) and Kirsten Gibbs Nieto, MD (1 shared paper).

What insurance does Dr. Stewart Lee Schaefer accept?

Dr. Schaefer is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.

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