John G Gancayco, MD - Medicare Gastroenterology in Jbsa Ft Sam Houston, TX

John G Gancayco, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Jbsa Ft Sam Houston, Texas. He went to Uniformed Services Uhs Fe Hebert School Of Med and graduated in 2005 and has 19 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Texas Digestive Disease Consultants Pllc and his current practice location is 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, Texas. You can reach out to his office (for appointments etc.) via phone at (210) 916-2338.

John G Gancayco is licensed to practice in Texas (license number R1954) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1609089390.

Contact Information

John G Gancayco, MD
3551 Roger Brooke Dr,
Jbsa Ft Sam Houston, TX 78234
(210) 916-2338
Not Available

Map and Direction




Physician's Profile

Full NameJohn G Gancayco
GenderMale
SpecialityGastroenterology
Experience19 Years
Location3551 Roger Brooke Dr, Jbsa Ft Sam Houston, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • John G Gancayco attended and graduated from Uniformed Services Uhs Fe Hebert School Of Med in 2005
  NPI Data:
  • NPI Number: 1609089390
  • Provider Enumeration Date: 05/08/2007
  • Last Update Date: 01/17/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 2668758459
  • Enrollment ID: I20170830000507

Medical Identifiers

Medical identifiers for John G Gancayco such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609089390NPI-NPPES
375517503OtherTXCSHCN
375517502MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 0101241245 (Virginia)Secondary
207R00000XInternal Medicine 0101241245 (Virginia)Secondary
207RG0100XInternal Medicine - Gastroenterology R1954 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Christus Santa Rosa Medical CenterSan antonio, TXHospital
Baptist Medical CenterSan antonio, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Texas Digestive Disease Consultants Pllc3375531379538

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. John G Gancayco allows following entities to bill medicare on his behalf.
Entity NameTexas Digestive Disease Consultants Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053397331
PECOS PAC ID: 3375531379
Enrollment ID: O20040505001844
Entity NameUniversity Of Texas Health Science Center At San Antonio
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720051717
PECOS PAC ID: 0042128548
Enrollment ID: O20040607000664

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. John G Gancayco 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
John G Gancayco, MD
3551 Roger Brooke Dr,
San Antonio, TX 78234-4504

Ph: (210) 916-4367
John G Gancayco, MD
3551 Roger Brooke Dr,
Jbsa Ft Sam Houston, TX 78234

Ph: (210) 916-2338

Reviews and Comments


Internal Medicine Doctors in Jbsa Ft Sam Houston, TX

Dr. John-henry Dean, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-292-7805    Fax: 210-292-7868
Dr. David Alton Lindholm, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-916-5554    
Kristin E Stoll, DO
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-916-4808    Fax: 210-916-3366
Ashkon Nehzati, DO
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-916-0797    
Loreto Calaquian, M.D.
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-916-5910    Fax: 210-916-2077
Dr. Charles K Lin, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 210-916-0935    Fax: 210-916-3051
Adam Jeffrey Kisling, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone: 816-752-3002    

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.

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