43 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Deschner, Gastroenterologist in San Marcos, TX?
Dr. William Deschner, MD is a Gastroenterologist, who primarily practices in San Marcos, TX with 2 additional practice locations. He has been practicing for over 43 years and is board certified. Dr. Deschner graduated from Baylor College of Medicine and completed his residency at Georgetown Univ Hosp, Gastroenterology; Baylor Coll Of Med, Internal Medicine. Dr. Deschner is fluent in English and Spanish, and is currently seeing new patients. Dr. Deschner’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Deschner’s office.
What are Areas of Expertise for Dr. Deschner?
Dr. William Deschner, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Deschner empowers patients to confidently navigate their health journey, specializing in Colonoscopy, Endoscopy, Gastroesophageal Reflux Disease (GERD), or comprehensive wellness support. Serving the San Marcos/TX community, Dr. Deschner is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Deschner go to medical school and complete their residency?
Fellowship: Gastroenterology - (Medstar-Georgetown Med Ctr)
Residency: Georgetown Univ Hosp, Gastroenterology; Baylor Coll Of Med, Internal Medicine | Baylor College of Medicine Affiliated Hospitals | Baylor College of Medicine Program
Medical School: Baylor College of Medicine
Is Dr. Deschner board certified as a Gastroenterologist?
Yes, Dr. William Deschner, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Deschner speak?
Dr. Deschner and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Deschner treat?
As a Gastroenterologist, Dr. Deschner diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Deschner. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
Also known as:
- Benign Transverse Colon Polyp
- Benign Cecum Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous transverse colon growth
- Transverse colon adenoma
- Transverse colon benign tumor
- Non-cancerous cecum growth
- Cecal adenoma
- Cecum benign tumor
ICD-10 Codes:
- D123: Benign neoplasm of transverse colon
- D120: Benign neoplasm of cecum
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Barrett's Esophagus
- Esophagus Disorder
- Barrett’s Esophagus
- Barrett's condition
- Esophageal metaplasia
ICD-10 Codes:
- K2270: Barrett's esophagus without dysplasia
Also known as:
- Dark, Tarry Stools (Melena)
- Gastrointestinal Bleeding
- Melena
- Black Stools
- Upper GI Bleed Signs
ICD-10 Codes:
- K921: Melena
What procedures does Dr. Deschner perform?
As a Gastroenterologist, Dr. Deschner performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Deschner. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Colonoscopy with Polyp Removal
- Colonoscopy with Biopsy
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Bleeding Control
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Endoscopic Hemostasis
- Colonoscopy for Bleeding
CPT Codes:
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45382: Colonoscopy, flexible; with control of bleeding, any method
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Esophagus Widening Procedure (Endoscopic)
- Diagnostic Upper Endoscopy with Biopsy
- Colonoscopy with Injections
- EGD with Esophageal Balloon Dilation
- Upper Endoscopy with Varices Banding
- Flexible Sigmoidoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
- EGD with Band Ligation
- Esophageal Varices Banding
- Gastric Varices Treatment
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
CPT Codes:
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
- 43244: Esophagogastroduodenoscopy, flexible, transoral; with band ligation of esophageal/gastric varices
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
Also known as:
- Upper Endoscopy with Polyp Removal
- Upper Endoscopy with Tumor Ablation
- EGD with Polypectomy
- Esophagus, Stomach, Duodenum Scope with Removal
- Flexible Endoscopy Tumor Excision
- EGD with Ablation
- Esophagus, Stomach, Duodenum Scope with Ablation
- Flexible Endoscopy Lesion Treatment
CPT Codes:
- 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 43270: Esophagogastroduodenoscopy, flexible, transoral; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)
Also known as:
- Abdominal Fluid Drainage with Imaging Guidance
- Guided Abdominal Paracentesis
- Ascites Drainage with Ultrasound
- Fluid Removal from Belly
CPT Codes:
- 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance
Also known as:
- Flexible Sigmoidoscopy
- Colorectal Cancer Screening Tests
- Sigmoidoscopy
- Lower colon exam
- Flexible colon scope
- Rectum and lower colon check
CPT Codes:
- 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Stopping Bleeding in Esophagus, Stomach, or Duodenum
- EGD with Bleeding Control
- Upper GI Endoscopy for Bleeding
- Gastric Bleeding Treatment
CPT Codes:
- 43255: Esophagogastroduodenoscopy, flexible, transoral; with control of bleeding, any method
Also known as:
- Capsule Endoscopy
- Pill Camera
- Wireless Capsule Endoscopy
- Small Bowel Capsule Endoscopy
- Intestinal Imaging Pill
CPT Codes:
- 91110: Gastrointestinal tract imaging, intraluminal (eg, capsule endoscopy), esophagus through ileum, with interpretation and report
Also known as:
- Swallowing Study (Videofluoroscopy)
- Dysphagia Tests
- Videofluoroscopic Swallowing Study (VFSS)
- Modified Barium Swallow (MBS)
- Dysphagia Evaluation
CPT Codes:
- 92611: Motion fluoroscopic evaluation of swallowing function by cine or video recording
Does Dr. Deschner accept my insurance?
Dr. Deschner accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Deschner accept in San Marcos, TX?
Dr. Deschner in San Marcos, TX accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Department of Defense / Tricare
Health Care Service Corporation (HCSC)
Humana
Medicare
Other Health Care Provider
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Deschner's office located?
Dr. William Deschner's Primary Practice
1305 Wonder World Dr Ste 200
San Marcos, TX 78666
What is Dr. Deschner's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Deschner's National Provider Identifier (NPI) number is 1023003563.
What common questions do patients ask about Dr. Deschner?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Deschner
What is Dr. William Deschner's specialty?
Dr. Deschner is a Gastroenterologist near San Marcos, TX. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Deschner to book an appointment today.
Is this Dr. William Deschner affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Deschner is affiliated with Resolute Baptist Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is William Deschner accepting new patients in San Marcos, TX?
Yes, Dr. William Deschner is accepting new patients at this time.
Does Dr. William Deschner offer online booking?
Please contact Dr. Deschner's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Deschner?
Please contact Dr. Deschner's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Deschner have?
Dr. William Deschner is certified by the American Board of Internal Medicine.
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