Nehemiah T Tan, MD - Medicare Rheumatology in Decatur, IL

Nehemiah T Tan, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Decatur, Illinois. He graduated from medical school in 1989 and has 35 years of diverse experience with area of expertise as Rheumatology. His current practice location is 102 W Kenwood Ave, Ste 110, Decatur, Illinois. You can reach out to his office (for appointments etc.) via phone at (217) 876-6880.

Nehemiah T Tan is licensed to practice in Illinois (license number 036085107) 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 1578520995.

Contact Information

Nehemiah T Tan, MD
102 W Kenwood Ave, Ste 110,
Decatur, IL 62526-4300
(217) 876-6880
(217) 876-6885

Map and Direction




Physician's Profile

Full NameNehemiah T Tan
GenderMale
SpecialityRheumatology
Experience35 Years
Location102 W Kenwood Ave, Decatur, Illinois
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:
  • Nehemiah T Tan graduated from medical school in 1989
  NPI Data:
  • NPI Number: 1578520995
  • Provider Enumeration Date: 04/28/2006
  • Last Update Date: 09/25/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 0446241228
  • Enrollment ID: I20040520000681

Medical Identifiers

Medical identifiers for Nehemiah T Tan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578520995NPI-NPPES
036085107MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 036085107 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Decatur Memorial HospitalDecatur, ILHospital
St Marys HospitalDecatur, ILHospital
St Anthonys Memorial HospitalEffingham, ILHospital
Warner Hospital And Health ServicesClinton, ILHospital
Sarah Bush Lincoln Health CenterMattoon, ILHospital

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. Nehemiah T Tan allows following entities to bill medicare on his behalf.
Entity NameNehemiah Tan Md Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649281270
PECOS PAC ID: 9931103025
Enrollment ID: O20060901000200

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. Nehemiah T Tan 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
Nehemiah T Tan, MD
2499 N Monroe St,
Decatur, IL 62526-3941

Ph: (217) 876-6880
Nehemiah T Tan, MD
102 W Kenwood Ave, Ste 110,
Decatur, IL 62526-4300

Ph: (217) 876-6880

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).

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