Dr. William K. Deschner, MD
- Medicare services, 2024
- 1,013
- Medicare patients, 2024
- 707
- Part D claims, 2024
- 1,599
- MIPS score, 2024
- 81
- Hospital affiliations
- 5
- Practice address
- 1305 Wonder World Drive Suite 105, San Marcos, TX 78666
- Practice phone
- Call (512) 754-8676
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CHRISTUS Physicians Surgery Center - San Marcos
Surgery Center - Medicare-Certified · San Marcos, Texas
Find Dr. Deschner'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. William K. Deschner is a gastroenterologist in San Marcos, Texas
Dr. Deschner practices at CHRISTUS Physicians Surgery Center - San Marcos in San Marcos, Texas.
Dr. Deschner's NPI, 1023003563, was assigned on September 12, 2005. Dr. Deschner graduated from Baylor College of Medicine in 1983. Dr. Deschner holds Texas license G4977.
- NPI
- 1023003563NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840367256
- NPI enumeration date
- September 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (512) 754-8676
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William K. Deschner practices at CHRISTUS Physicians Surgery Center - San Marcos in San Marcos, Texas
Dr. Deschner's primary practice is CHRISTUS Physicians Surgery Center - San Marcos, at 1305 Wonder World Drive Suite 105, San Marcos, TX 78666. The practice phone is (512) 754-8676.
- CHRISTUS Physicians Surgery Center - San Marcos1305 Wonder World Drive Suite 105, San Marcos, TX 78666Phone(512) 754-8676
Source: Dmand AI Affiliation Data
Dr. William K. Deschner is affiliated with 8 sites of care and 2 medical groups
Dr. Deschner's primary practice is CHRISTUS Physicians Surgery Center - San Marcos in San Marcos, Texas. Dr. Deschner is also affiliated with CHRISTUS Santa Rosa Hospital - San Marcos. The medical group on file is Texas Digestive Disease Consultants. Dmand AI also links Dr. Deschner to 4 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William K. Deschner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Deschner practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHRISTUS Physicians Surgery Center - San Marcos | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William K. Deschner is one of 1,341 gastroenterologists in Texas
Gastroenterology is Dr. Deschner's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Deschner is licensed in Texas.
Specialties and state licenses
- Gastroenterology, TexasPrimary
Gastroenterologists near Dr. Deschner
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. William K. Deschner billed Medicare for 1,013 services in 2024
CMS data shows 1,013 Medicare services from Dr. Deschner across 16 procedure codes in 2024, for 707 Medicare patients. Medicare paid $110,398 for them.
Dr. Deschner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 5412024: 5553%
- Office and hospital visits
- 2023: 4032024: 3884%
- Other services
- 2023: 632024: 7011%
- Drugs given in the office
- 2023: 5,1002024: 0100%
- Tests and treatments
- 2023: 172024: 0100%
Where Dr. Deschner's Medicare services took place, 2024
- In an office31631%
- In a facility69769%
Dr. Deschner compared with the Texas median for gastroenterologists, 2024
- Dr. Deschner
- Texas median
- Medicare services
- 1,013vs 5052.0 times
- Medicare patients
- 707vs 2842.5 times
- Part D claims
- 1,406vs 4932.9 times
Medians across 1,281 gastroenterologists in Texas with Dmand AI profiles that report each measure.
Dr. Deschner'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.
Need commercial claims for Dr. Deschner?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Deschner and other gastroenterologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William K. Deschner treated 707 Medicare patients in 2024, average age 74
CMS counts 707 Medicare patients who saw Dr. Deschner in 2024. The largest group is 65 to 74, with 372 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Deschner's median patient age at 68, with 51% women.
Dr. Deschner's Medicare patients by age, 2024
Dr. Deschner's Medicare patients by sex, 2024
- Women36852%
- Men33948%
Chronic conditions among Dr. Deschner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease36%
- Diabetes28%
- Anxiety23%
- Chronic kidney disease23%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Deschner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
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. William K. Deschner wrote 1,599 Medicare Part D claims in 2024
In 2024, Dr. Deschner wrote 1,599 Medicare Part D claims for 656 patients. 74% of them were for generic drugs. CMS names the drug for 1,406 of them, across 23 drugs with 11 or more claims each, at $540,463 in total drug cost. In 2023, CMS named 1,299 claims across 24 drugs.
Dr. Deschner's Part D claims by kind of drug, 2024
- Generic1,187 claims74%
- Brand-name412 claims26%
Dr. Deschner'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. Deschner's Part D claims, 2024
- Antibiotics3%51 of 1,599 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: 1,2992024: 1,4068%
Drugs named by CMS: 23 in 2024, 24 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. William K. Deschner 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. Deschner for performance year 2024, reported as part of a group. Dr. Deschner accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 216 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Deschner, more than 91% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Deschner'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. Deschner ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 91st percentile216 procedures
- Colonoscopy
- 85th percentile126 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. William K. Deschner received $12,986 in industry payments from 2016 to 2025
CMS Open Payments shows 774 general payments to Dr. Deschner from 50 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, $3,894.
General payments to Dr. Deschner by program year, 2016 to 2025
General payments to Dr. Deschner by kind, 2016 to 2025
- Food and beverage$12,929100%
- Education$570%
Companies that paid Dr. Deschner 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. William K. Deschner graduated from Baylor College of Medicine
Dr. Deschner graduated from Baylor College of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William K. Deschner'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. William K. Deschner
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. William K. Deschner's NPI number?
Dr. William K. Deschner's NPI number is 1023003563. It was assigned on September 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William K. Deschner?
Dr. William K. Deschner is a gastroenterologist in San Marcos, Texas. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. William K. Deschner practice?
Dr. Deschner practices at 1305 Wonder World Drive Suite 105, San Marcos, TX 78666. Dr. Deschner's primary practice is CHRISTUS Physicians Surgery Center - San Marcos in San Marcos, Texas. Dmand AI also links Dr. Deschner to 4 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. William K. Deschner's office phone number?
The practice phone on file for Dr. Deschner is (512) 754-8676.
What is Dr. William K. Deschner's medical license number?
Dr. Deschner holds Texas license G4977.
Which hospitals is Dr. William K. Deschner affiliated with?
Dr. Deschner is affiliated with CHRISTUS Santa Rosa Hospital - San Marcos. Dmand AI links Dr. Deschner to 4 more hospitals.
What medical group is Dr. William K. Deschner part of?
Dr. Deschner is linked to Texas Digestive Disease Consultants. Dmand AI links Dr. Deschner to 1 more medical group.
Does Dr. William K. Deschner accept Medicare?
Yes. CMS data shows Dr. Deschner billed Medicare for 1,013 services in 2024, and Dr. Deschner accepts Medicare assignment.
What is Dr. William K. Deschner's MIPS score?
Dr. Deschner's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. William K. Deschner see?
CMS counts 707 Medicare patients who saw Dr. Deschner in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. William K. Deschner bill to Medicare?
In 2024, Dr. Deschner's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (45380) and surgery: digestive system (43239).
Where did Dr. William K. Deschner go to medical school?
Dr. Deschner graduated from Baylor College of Medicine in 1983.
What drugs does Dr. William K. Deschner prescribe most?
In 2024 Medicare Part D data, Dr. Deschner's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Clenpiq.
Has Dr. William K. Deschner received payments from drug or device companies?
CMS Open Payments shows $12,986 in general payments to Dr. Deschner from 50 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. William K. Deschner been practicing?
Dr. Deschner graduated from medical school in 1983, 43 years ago.
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