Wilfor Jhonathan Diaz Fernandez, - Medicare Internal Medicine in Saint Louis, MO

Wilfor Jhonathan Diaz Fernandez, is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. He graduated from medical school in 2014 and has 10 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc, Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is and his current practice location is 621 S New Ballas Rd, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 509-5305.

Wilfor Jhonathan Diaz Fernandez is licensed to practice in Missouri (license number 2018015704) 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 1134611817.

Contact Information

Wilfor Jhonathan Diaz Fernandez,
621 S New Ballas Rd,
Saint Louis, MO 63141-8232
(314) 509-5305
(314) 251-4454

Map and Direction




Physician's Profile

Full NameWilfor Jhonathan Diaz Fernandez
GenderMale
SpecialityInternal Medicine
Experience10 Years
Location621 S New Ballas Rd, Saint Louis, Missouri
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:
  • Wilfor Jhonathan Diaz Fernandez graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1134611817
  • Provider Enumeration Date: 05/30/2018
  • Last Update Date: 05/30/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 7618226705
  • Enrollment ID: I20210924001603

Medical Identifiers

Medical identifiers for Wilfor Jhonathan Diaz Fernandez such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134611817NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 2018015704 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Beth Israel Deaconess Hospital - MiltonMilton, MAHospital
Beth Israel Deaconess Hospital PlymouthPlymouth, MAHospital
Beth Israel Deaconess Hospital - NeedhamNeedham, MAHospital
Beth Israel Deaconess Medical CenterBoston, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc44865671041337
Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is6305749987450

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. Wilfor Jhonathan Diaz Fernandez allows following entities to bill medicare on his behalf.
Entity NameHarvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194765438
PECOS PAC ID: 4486567104
Enrollment ID: O20031204000918
Entity NameAssociated Physicians Of Harvard Medical Faculty Physicians At Beth Is
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497151773
PECOS PAC ID: 6305749987
Enrollment ID: O20150211001099

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. Wilfor Jhonathan Diaz Fernandez 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
Wilfor Jhonathan Diaz Fernandez,
621 S New Ballas Rd,
Saint Louis, MO 63141-8232

Ph: (314) 509-5305
Wilfor Jhonathan Diaz Fernandez,
621 S New Ballas Rd,
Saint Louis, MO 63141-8232

Ph: (314) 509-5305

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.