John Charles Isaac, MD - Medicare Cardiovascular Disease (cardiology) in Houston, TX

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John Charles Isaac, MD is a medicare enrolled "Internal Medicine - Interventional Cardiology" physician in Houston, Texas. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 1994 and has 30 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Houston Cardiovascular Assoc Inc and his current practice location is 6560 Fannin St, Ste 620, Houston, Texas. You can reach out to his office (for appointments etc.) via phone at (713) 791-1978.

John Charles Isaac is licensed to practice in Texas (license number K4090) 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 1295799005.

Contact Information

John Charles Isaac, MD
6560 Fannin St, Ste 620,
Houston, TX 77030-2761
(713) 791-1978
(713) 791-1870

Map and Direction




Physician's Profile

Full NameJohn Charles Isaac
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience30 Years
Location6560 Fannin St, 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 Charles Isaac attended and graduated from University Of Texas Southwestern Medical School At Dallas in 1994
  NPI Data:
  • NPI Number: 1295799005
  • Provider Enumeration Date: 04/17/2006
  • Last Update Date: 10/25/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 8628970340
  • Enrollment ID: I20051212000547

Medical Identifiers

Medical identifiers for John Charles Isaac such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1295799005NPI-NPPES
K4090OtherTXPHYSICIAN LICENSE
151665001MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0011XInternal Medicine - Interventional Cardiology K4090 (Texas)Primary
207RC0000XInternal Medicine - Cardiovascular Disease K4090 (Texas)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Houston Methodist HospitalHouston, TXHospital
Houston Methodist Willowbrook HospitalHouston, TXHospital
Houston Methodist The Woodlands HospitalThe woodlands, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Houston Cardiovascular Assoc Inc791199215128

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 Charles Isaac allows following entities to bill medicare on his behalf.
Entity NameWillowbrook Cardiovascular Associates, P.a.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194789974
PECOS PAC ID: 4789586405
Enrollment ID: O20040123000121
Entity NameHouston Cardiovascular Assoc Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487746020
PECOS PAC ID: 7911992151
Enrollment ID: O20040417000301
Entity NameHcva Asc Llc
Entity TypePart B Supplier - Ambulatory Surgical Center
Entity IdentifiersNPI Number: 1477234979
PECOS PAC ID: 5395195648
Enrollment ID: O20231228001853

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 Charles Isaac 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 Charles Isaac, MD
6560 Fannin St, Ste 620,
Houston, TX 77030-2761

Ph: (713) 791-1978		John Charles Isaac, MD
6560 Fannin St, Ste 620,
Houston, TX 77030-2761

Ph: (713) 791-1978

Reviews and Comments


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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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