JOHN G. GANCAYCO M.D.
NPI 1609089390
Internal Medicine - Gastroenterology in Jbsa Ft Sam Houston, TX

Active since May 08, 2007PECOS EnrolledAccepts Medicare Assignment
3551 ROGER BROOKE DR, JBSA FT SAM HOUSTON, TX 78234(210) 916-2338 Get Directions Write a Review

NPPES record last updated: January 17, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 17, 2020, Aug 27, 2018 (2 updates tracked since 2018).

About John G. Gancayco M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN G. GANCAYCO M.D. (NPI 1609089390) is an individual gastroenterology provider in Jbsa Ft Sam Houston, Texas, licensed in Texas (R1954) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (2005).

NPPES Registry Identity

NPI1609089390
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJOHN G. GANCAYCOCredential: M.D.
Location Address3551 ROGER BROOKE DRJbsa Ft Sam Houston, TX 78234
Mailing Address3551 Roger Brooke DrSan Antonio, TX 78234-4504 · (210) 916-4367
Sole ProprietorNo
Medical School CMSUniformed Services Uhs Fe Hebert School Of MedGraduated 2005
Enumeration DateMay 8, 2007
Last NPPES UpdateJanuary 17, 20202 updates tracked since enumeration
NPI 1609089390 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses Licensed in TX · R1954 Licensed in VA · 0101241245
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101241245 (VA)
3551 ROGER BROOKE DR, Jbsa Ft Sam Houston, TX 78234

Other Identifiers 2

Medicaid375517502TX
Other375517503TX · Cshcn

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

John G. Gancayco M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2668758459
PECOS Enrollment IDI20170830000507
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
40 services30 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
32 services32 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450058
Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County
Emergency services Birthing friendly

Methodist Hospital

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450388
Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number670055
Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78234 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Anesthetist, Certified Registered
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Physician Assistant
3551 ROGER BROOKE DR
JBSA FT SAM HOUSTON, TX 78234
Pediatrics (Pediatric Endocrinology)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Neurological Surgery
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Ophthalmology
3551 ROGER BROOKE DR
JBSA FORT SAM HOUSTON, TX 78234
Emergency Medicine (Emergency Medical Services)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Gancayco's NPI number?

The NPI number for John Gancayco is 1609089390. It was assigned to this individual provider in the NPPES registry on May 8, 2007.

Where is John Gancayco located?

John Gancayco practices at 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234. The listed phone number is (210) 916-2338.

What is John Gancayco's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is John Gancayco enrolled in Medicare?

Yes. John Gancayco is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Gancayco accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan and Imperial Insurance Companies, Inc. and 2 other insurers list John Gancayco as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Gancayco affiliated with any hospitals?

According to CMS data, John Gancayco is affiliated with Baptist Medical Center, Methodist Hospital and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for John Gancayco was last updated on January 17, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.