Nikolaos Diakos, MD - Medicare Internal Medicine in Houston, TX

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Nikolaos Diakos, MD is a medicare enrolled "Internal Medicine - Interventional Cardiology" physician in Houston, Texas. His current practice location is 6624 Fannin St, Suite 2600, Houston, Texas. You can reach out to his office (for appointments etc.) via phone at (713) 790-9401.

Nikolaos Diakos is licensed to practice in Texas (license number T9668) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1659791507.

Contact Information

Nikolaos Diakos, MD
6624 Fannin St, Suite 2600,
Houston, TX 77030-2338
(713) 790-9401
(713) 790-0353

Map and Direction




Physician's Profile

Full NameNikolaos Diakos
GenderMale
SpecialityInternal Medicine - Interventional Cardiology
Location6624 Fannin St, Houston, Texas
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1659791507
  • Provider Enumeration Date: 04/18/2014
  • Last Update Date: 03/20/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8921302167
  • Enrollment ID: I20221108001396

Medical Identifiers

Medical identifiers for Nikolaos Diakos such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1659791507NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RA0001XInternal Medicine - Advanced Heart Failure And Transplant Cardiology T9668 (Texas)Secondary
207RC0000XInternal Medicine - Cardiovascular Disease 271477 (Massachusetts)Secondary
207RC0000XInternal Medicine - Cardiovascular Disease T9668 (Texas)Secondary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary
207RI0011XInternal Medicine - Interventional Cardiology T9668 (Texas)Primary

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. Nikolaos Diakos allows following entities to bill medicare on his behalf.
Entity NameBaylor College Of Medicine
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881026664
PECOS PAC ID: 8022243971
Enrollment ID: O20131030000972
Entity NameTexas Heart Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245856087
PECOS PAC ID: 0244650984
Enrollment ID: O20201019000123

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. Nikolaos Diakos 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
Nikolaos Diakos, MD
6624 Fannin St, Suite 2600,
Houston, TX 77030-2338

Ph: (713) 790-9401		Nikolaos Diakos, MD
6624 Fannin St, Suite 2600,
Houston, TX 77030-2338

Ph: (713) 790-9401

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.

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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.