Dannel Diaz Ruiz, MD - Medicare Internal Medicine in Mayaguez,, PR

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Dannel Diaz Ruiz, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Mayaguez,, Puerto Rico. His current practice location is 313 Calle Pirineo, Miradero Hills, Mayaguez,, Puerto Rico. You can reach out to his office (for appointments etc.) via phone at (787) 477-8410.

Dannel Diaz Ruiz is licensed to practice in Puerto Rico (license number 23235) 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 1679066435.

Contact Information

Dannel Diaz Ruiz, MD
313 Calle Pirineo, Miradero Hills,
Mayaguez,, PR 00680
(787) 477-8410
Not Available

Map and Direction




Physician's Profile

Full NameDannel Diaz Ruiz
GenderMale
SpecialityInternal Medicine - Endocrinology, Diabetes & Metabolism
Location313 Calle Pirineo, Mayaguez,, Puerto Rico
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1679066435
  • Provider Enumeration Date: 06/07/2018
  • Last Update Date: 02/25/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 3971985672
  • Enrollment ID: I20231110001612

Medical Identifiers

Medical identifiers for Dannel Diaz Ruiz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1679066435NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 35253-R (Puerto Rico)Secondary
390200000XStudent In An Organized Health Care Education/training Program 14699-I (Puerto Rico)Secondary
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 23235 (Puerto Rico)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. Dannel Diaz Ruiz allows following entities to bill medicare on his behalf.
Entity NameTexas Oncology Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811944101
PECOS PAC ID: 5395658934
Enrollment ID: O20031124000323

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. Dannel Diaz Ruiz 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
Dannel Diaz Ruiz, MD
Po Box 425,
Utuado, PR 00641-0425

Ph: (787) 477-8410		Dannel Diaz Ruiz, MD
313 Calle Pirineo, Miradero Hills,
Mayaguez,, PR 00680

Ph: (787) 477-8410

Reviews and Comments


Internal Medicine Doctors in Mayaguez,, PR


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.