Dr Mervin Nigel Leader, MD - Medicare Psychiatry & Neurology in Fairfield, IL

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Dr Mervin Nigel Leader, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Fairfield, Illinois. His current practice location is 303 Nw 11th St, Fairfield, Illinois. You can reach out to his office (for appointments etc.) via phone at (618) 842-4617.

Dr Mervin Nigel Leader is licensed to practice in Illinois (license number 036163562) 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 1255522611.

Contact Information

Dr Mervin Nigel Leader, MD
303 Nw 11th St,
Fairfield, IL 62837-1203
(618) 842-4617
(618) 847-8387

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Physician's Profile

Full NameDr Mervin Nigel Leader
GenderMale
SpecialityPsychiatry & Neurology - Psychiatry
Location303 Nw 11th St, Fairfield, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1255522611
  • Provider Enumeration Date: 08/09/2007
  • Last Update Date: 03/28/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8729175583
  • Enrollment ID: I20180806000793

Medical Identifiers

Medical identifiers for Dr Mervin Nigel Leader such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255522611NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry E-5515 (Arkansas)Secondary
2084P0800XPsychiatry & Neurology - Psychiatry 036163562 (Illinois)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. Dr Mervin Nigel Leader allows following entities to bill medicare on his behalf.
Entity NameVolunteers Of America Of Indiana Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598005274
PECOS PAC ID: 0244455897
Enrollment ID: O20140715002244

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. Dr Mervin Nigel Leader 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
Dr Mervin Nigel Leader, MD
303 Nw 11th St,
Fairfield, IL 62837-1203

Ph: (618) 842-4617		Dr Mervin Nigel Leader, MD
303 Nw 11th St,
Fairfield, IL 62837-1203

Ph: (618) 842-4617

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Psychiatry & Neurology Doctors in Fairfield, IL


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.