$26,360 in research paymentsArteriovenous FistulaVascular FistulaLutonix DCBStandard Balloon Angioplasty Catheter
Dr. Matthew E. Schaefer, DO
NPI1346205648PAC ID6507967957
- Medicare services, 2024
- 3,377
- Medicare patients, 2026
- 940
- Part D claims, 2026
- 2,087
- Clinical trials
- 1
- MIPS score, 2026
- 86
- Practice address
- 7142 San Pedro Ave, San Antonio, TX 78216
- Practice phone
- Call (830) 264-7403
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kerrville Dialysis
San Antonio, Texas
Find Dr. Schaefer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Matthew E. Schaefer is a nephrologist in San Antonio, Texas
Dr. Schaefer practices at Kerrville Dialysis in San Antonio, Texas.
Dr. Schaefer's NPI, 1346205648, was assigned on April 19, 2006. Dr. Schaefer graduated from Kirksville College of Osteopathic Medicine in 2002. Dr. Schaefer holds Texas license M5487.
NPI and contact details
- NPI
- 1346205648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507967957
- NPI enumeration date
- April 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (830) 264-7403
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew E. Schaefer practices at Kerrville Dialysis in San Antonio, Texas
Dr. Schaefer's primary practice is Kerrville Dialysis, at 7142 San Pedro Ave, San Antonio, TX 78216 in Bexar County. The practice phone is (830) 264-7403.
- Kerrville Dialysis7142 San Pedro Ave, San Antonio, TX 78216 · Bexar CountyPhone(830) 264-7403
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Matthew E. Schaefer is affiliated with 10 sites of care and 1 medical group
Dr. Schaefer's primary practice is Kerrville Dialysis in San Antonio, Texas. Dr. Schaefer is also affiliated with Baptist Medical Center. The medical group on file is San Antonio Kidney. Dmand AI also links Dr. Schaefer to 4 more hospitals, 3 dialysis centers and 1 group practice or clinic, each named with a free account.
Kerrville DialysisPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew E. Schaefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schaefer practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kerrville Dialysis | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew E. Schaefer is one of 1,045 nephrologists in Texas
Nephrology is Dr. Schaefer's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Schaefer is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Schaefer's licenses on file in 2 states: Texas and Missouri.
Specialties and state licenses
- Nephrology, TexasPrimary
- Internal medicine, Missouri
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease, fluid and electrolyte imbalances, hypercalcemia, kidney cysts and kidney disease among the conditions Dr. Schaefer treats.
Nephrologists near Dr. Schaefer
Counts of nephrologists 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. Matthew E. Schaefer billed Medicare for 3,377 services in 2024
CMS data shows 3,377 Medicare services from Dr. Schaefer across 14 procedure codes in 2024, for 940 Medicare patients. Medicare paid $305,173 for them.
Medicare services, 20243,377
Medicare patients940
Paid by Medicare$305,173
Procedure codes14
Dr. Schaefer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,6572024: 1,97719%
- Other services
- 2023: 1,2902024: 86633%
- Tests and treatments
- 2023: 7912024: 53432%
- Lab and pathology
- 2023: 272024: 0100%
- Surgery
- 2023: 442024: 0100%
Where Dr. Schaefer's Medicare services took place, 2024
- In an office2,80983%
- In a facility56817%
Dr. Schaefer compared with the Texas median for nephrologists, 2024
- Dr. Schaefer
- Texas median
- Medicare services
- 3,377vs 1,0483.2 times
- Medicare patients
- 940vs 2773.4 times
- Part D claims
- 1,735vs 7582.3 times
Medians across 1,017 nephrologists 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Schaefer and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew E. Schaefer treated 940 Medicare patients in 2026, average age 77
CMS counts 940 Medicare patients who saw Dr. Schaefer in 2026. The largest group is 75 to 84, with 403 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 9% are also on Medicaid. Their average risk score is 2.54, 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 76, with 48% women.
Medicare patients, 2026940
Average age77
Average risk score2.54
Also on Medicaid9%
Dr. Schaefer's Medicare patients by age, 2026
Dr. Schaefer's Medicare patients by sex, 2026
- Women46449%
- Men47651%
Chronic conditions among Dr. Schaefer's Medicare patients, 2026
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes52%
- Arthritis47%
- Ischemic heart disease47%
- Heart failure36%
- Atrial fibrillation31%
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 76
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Matthew E. Schaefer wrote 2,087 Medicare Part D claims in 2026
In 2026, Dr. Schaefer wrote 2,087 Medicare Part D claims for 448 patients. 83% of them were for generic drugs. CMS names the drug for 1,735 of them, across 36 drugs with 11 or more claims each, at $405,406 in total drug cost. In 2023, CMS named 1,845 claims across 44 drugs.
Part D claims, 20262,087
Drugs named by CMS36
Total drug cost$405,406
Part D patients448
Dr. Schaefer's Part D claims by kind of drug, 2026
- Generic1,738 claims83%
- Brand-name349 claims17%
Dr. Schaefer'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. Schaefer's Part D claims, 2026
- Antibiotics3%57 of 2,087 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: 1,8452024: 1,7356%
Drugs named by CMS: 36 in 2024, 44 in 2023.
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. Matthew E. Schaefer scored 86 out of 100 in Medicare's MIPS program for 2026
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Schaefer for performance year 2026, reported as part of a group. Dr. Schaefer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Schaefer's MIPS scores, performance year 2026
- 86of 100Final score
- 67.9of 100Quality
- 87of 100Promoting Interoperability
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Matthew E. Schaefer has worked on 1 clinical trial
Dmand AI links Dr. Schaefer to 1 clinical trial. Conditions studied include Arteriovenous Fistula and Vascular Fistula. Open Payments lists research payments to Dr. Schaefer that name 1 trial.
Conditions in Dr. Schaefer's trials
- Arteriovenous Fistula
- Vascular Fistula
Investigators on the most trials with Dr. Schaefer
- Ahmed Mohamed Kamel Abdel Aal, MD, PhD1 shared trial
- Kenneth Dominic Abreo, MBBS1 shared trial
- Saravanan Balamuthusamy, MD1 shared trial
Recent clinical trials with Dr. Schaefer
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Matthew E. Schaefer received $54,075 in industry payments from 2016 to 2025
CMS Open Payments shows 397 general payments to Dr. Schaefer from 47 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 49% of the total. GE Healthcare paid the most, $24,978. It also lists 4 research payments totaling $26,360 in 2016, naming 1 clinical trial.
General payments to Dr. Schaefer by program year, 2016 to 2025
General payments to Dr. Schaefer by kind, 2016 to 2025
$54.1Kin total
- Consulting fees$26,62849%
- Acquisitions$15,58229%
- Food and beverage$7,71314%
- Education$4,1528%
Companies that paid Dr. Schaefer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Matthew E. Schaefer has 1 award and honors on record
Dmand AI lists 1 award for Dr. Schaefer, most recently CMS Stage 1 2012 in 2012.
Awards and honors for Dr. Schaefer
- 2012
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Matthew E. Schaefer graduated from Kirksville College of Osteopathic Medicine
Dr. Schaefer graduated from Kirksville College of Osteopathic Medicine in 2002.
- Medical school
- Board certified in nephrology
- Board certified in rpvi
- Board certified in 2013 - 2018
- Board certified in 2003 - 2008
- Board certified in 2006 - 2025
Source: Dmand AI Professional Profile Data
Dr. Matthew E. Schaefer accepts plans from 23 insurance carriers
Dr. Schaefer is in network with 23 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 14. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- HCSC
- Humana
- +15 more carriersWith a free account
Plan types Dr. Schaefer accepts, by number of carriers
- HMO14
- PPO14
- Medicare12
- POS7
- EPO5
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Matthew E. Schaefer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Matthew E. 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. Matthew E. Schaefer's NPI number?
Dr. Matthew E. Schaefer's NPI number is 1346205648. It was assigned on April 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew E. Schaefer?
Dr. Matthew E. Schaefer is a nephrologist in San Antonio, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Matthew E. Schaefer practice?
Dr. Schaefer practices at 7142 San Pedro Ave, San Antonio, TX 78216. Dr. Schaefer's primary practice is Kerrville Dialysis in San Antonio, Texas. Dmand AI also links Dr. Schaefer to 4 hospitals, 3 dialysis centers and 1 group practice or clinic, and a free account names each one.
What is Dr. Matthew E. Schaefer's office phone number?
The practice phone on file for Dr. Schaefer is (830) 264-7403. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Matthew E. Schaefer's email address?
Dmand AI checks professional and personal email addresses for Dr. Schaefer through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Matthew E. Schaefer's medical license number?
Dr. Schaefer holds Texas license M5487, one of the licenses on file in 2 states.
Which states has Dr. Matthew E. Schaefer been licensed in?
Dmand AI has state licenses on file for Dr. Schaefer in Texas and Missouri.
Which hospitals is Dr. Matthew E. Schaefer affiliated with?
Dr. Schaefer is affiliated with Baptist Medical Center. Dmand AI links Dr. Schaefer to 4 more hospitals, named with a free account.
What medical group is Dr. Matthew E. Schaefer part of?
Dr. Schaefer is linked to San Antonio Kidney.
Who does Dr. Matthew E. Schaefer practice with?
Dmand AI links 22 HCPs to Dr. Schaefer's primary medical group, 16 of them nephrologists. A free account lists them, with verified contacts.
Show 12 more questionsShow fewer questions
Does Dr. Matthew E. Schaefer accept Medicare?
Yes. CMS data shows Dr. Schaefer billed Medicare for 3,377 services in 2024, and Dr. Schaefer accepts Medicare assignment.
What is Dr. Matthew E. Schaefer's MIPS score?
Dr. Schaefer's MIPS final score for performance year 2026 is 86 out of 100, reported as part of a group.
How many Medicare patients does Dr. Matthew E. Schaefer see?
CMS counts 940 Medicare patients who saw Dr. Schaefer in 2026, with an average age of 77.
Is Dr. Matthew E. Schaefer board certified?
Yes. Dr. Schaefer is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Matthew E. Schaefer bill to Medicare?
In 2024, Dr. Schaefer's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and dialysis (90960).
Where did Dr. Matthew E. Schaefer go to medical school?
Dr. Schaefer graduated from Kirksville College of Osteopathic Medicine in 2002.
What drugs does Dr. Matthew E. Schaefer prescribe most?
In 2024 Medicare Part D data, Dr. Schaefer's most prescribed drugs by claims were Calcitriol, Losartan Potassium and Farxiga.
Has Dr. Matthew E. Schaefer received payments from drug or device companies?
CMS Open Payments shows $54,075 in general payments to Dr. Schaefer from 47 companies from 2016 to 2025. The largest total came from GE Healthcare.
How long has Dr. Matthew E. Schaefer been practicing?
Dr. Schaefer graduated from medical school in 2002, 24 years ago.
Does Dr. Matthew E. Schaefer do research?
Dr. Schaefer has worked on 1 clinical trial.
What EHR does Dr. Matthew E. Schaefer's practice use?
Dmand AI tracks the EHR system at Kerrville Dialysis and at 9 more affiliated sites. The vendor and product are available with a free Dmand AI account.
What insurance does Dr. Matthew E. Schaefer accept?
Dr. Schaefer is in network with 23 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 14. Check the plan with the practice before a visit. The full carrier list is available with a free Dmand AI account.
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