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Edit this profileAt a glance
- 3700 Joseph Siewick Dr, Suite 308, Fairfax, VA 22033
About Dr. Chao
Catherine S. Chao, M.D. is a healthcare provider in Fairfax, VA specializing in pediatric gastroenterology. According to Medicare claims data, the services billed most often include study of esophagus to assess movement and monitoring and recording of esophageal function through nasal tube with electrode. This provider record is associated with NPI 1184697443.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (703) 716-8700
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
3700 JOSEPH SIEWICK DR SUITE 308
Fairfax, VA 22033
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Chronic conditions
Liver health
Specialized and cancer
Wound care
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Advanced endoscopy
Biliary and pancreatic endoscopy
Capsule and physiology testing
- Ambulatory reflux monitoring
- Capsule endoscopy
- Hydrogen and methane breath testing
- Anorectal manometry
- Esophageal manometry
Chronic illness
Clinical Nutrition
Diagnostic Testing
Digestive
General surgery
Infection & Microbiology Tests
Liver procedures
Lower endoscopy
- Colon polyp removal
- Diagnostic colonoscopy
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Nursing care
Nutrition & Digestion
Upper endoscopy
- Endoscopic mucosal resection
- Esophageal biopsy
- Esophageal dilation
- Stomach biopsy
- Endoscopic submucosal dissection
Most searched procedures
Treatments
Procedures Most Often Billed to Medicare
24 services · 24 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Study of esophagus to assess movement | Treatment | 91010 |
13 |
| Monitoring and recording of esophageal function through nasal tube with electrode | Treatment | 91037 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Catherine S. Chao?
Catherine S. Chao is a pediatric gastroenterology in Fairfax, VA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Catherine S. Chao's address?
Catherine S. Chao is listed at 3700 Joseph Siewick Dr Suite 308, Fairfax, VA 22033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Catherine S. Chao?
The number on file is (703) 716-8700. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Catherine S. Chao?
Catherine S. Chao's National Provider Identifier is 1184697443. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Catherine S. Chao have?
Catherine S. Chao has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What procedures does Catherine S. Chao perform?
According to Medicare billing data, Catherine S. Chao provides treatments such as study of esophagus to assess movement and monitoring and recording of esophageal function through nasal tube with electrode. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Catherine S. Chao's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Catherine S. Chao. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.