Dr Catherine S Chao, MD - Medicare Pediatric Medicine in Fairfax, VA

Dr Catherine S Chao, MD is a medicare enrolled "Pediatrics - Pediatric Gastroenterology" physician in Fairfax, Virginia. She went to University Of Pittsburgh School Of Medicine and graduated in 1991 and has 33 years of diverse experience with area of expertise as Pediatric Medicine. She is a member of the group practice Inova Health Care Services and her current practice location is 3700 Joseph Siewick Dr, Suite 308, Fairfax, Virginia. You can reach out to her office (for appointments etc.) via phone at (703) 716-8700.

Dr Catherine S Chao is licensed to practice in Virginia (license number 0101056644) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1184697443.

Contact Information

Dr Catherine S Chao, MD
3700 Joseph Siewick Dr, Suite 308,
Fairfax, VA 22033-1744
(703) 716-8700
(703) 716-8703

Map and Direction




Physician's Profile

Full NameDr Catherine S Chao
GenderFemale
SpecialityPediatric Medicine
Experience33 Years
Location3700 Joseph Siewick Dr, Fairfax, Virginia
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Catherine S Chao attended and graduated from University Of Pittsburgh School Of Medicine in 1991
  NPI Data:
  • NPI Number: 1184697443
  • Provider Enumeration Date: 02/08/2006
  • Last Update Date: 03/15/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 5193741437
  • Enrollment ID: I20070301000234

Medical Identifiers

Medical identifiers for Dr Catherine S Chao such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184697443NPI-NPPES
6724329MedicaidVA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080P0206XPediatrics - Pediatric Gastroenterology 0101056644 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Inova Fairfax HospitalFalls church, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Inova Health Care Services24663510931778

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Catherine S Chao allows following entities to bill medicare on her behalf.
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20040102000644
Entity NamePediatric Specialists Of Virginia Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699119818
PECOS PAC ID: 7719110154
Enrollment ID: O20140509000026

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Catherine S Chao is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Catherine S Chao, MD
3700 Joseph Siewick Dr, Suite 308,
Fairfax, VA 22033-1744

Ph: (703) 716-8700
Dr Catherine S Chao, MD
3700 Joseph Siewick Dr, Suite 308,
Fairfax, VA 22033-1744

Ph: (703) 716-8700

Reviews and Comments


Pediatrics Doctors in Fairfax, VA

Ho Chung Tu, M.D.
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Dr. Lindsey Waldman,
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Dr. Laura E. Byrnes, M.D.
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Dr. Julie-ann M Crewalk, M.D.
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Sandy L. Chung, M.D.
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Phone: 703-391-0900    Fax: 703-391-2919
Dr. James R Baugh, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 3020 Hamaker Ct, Suite 200, Fairfax, VA 22031
Phone: 703-573-2432    Fax: 703-280-9350
Benjamin Isaac Enav, M.D.
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Medicare: Medicare Enrolled
Practice Location: 2700 Prosperity Ave, Suite 260, Fairfax, VA 22031
Phone: 571-314-0444    Fax: 855-237-3628

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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