Mr William Stephen Forness, FNP-C - Medicare Family Medicine in Saint Louis, MO

Mr William Stephen Forness, FNP-C is a medicare enrolled "Family Medicine" physician in Saint Louis, Missouri. His current practice location is 621 S New Ballas Rd Ste 560a, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 251-6440.

Mr William Stephen Forness is licensed to practice in Missouri (license number F09191408) 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 1386237097.

Contact Information

Mr William Stephen Forness, FNP-C
621 S New Ballas Rd Ste 560a,
Saint Louis, MO 63141-8261
(314) 251-6440
(314) 251-4456

Map and Direction




Physician's Profile

Full NameMr William Stephen Forness
GenderMale
SpecialityFamily Medicine
Location621 S New Ballas Rd Ste 560a, Saint Louis, Missouri
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1386237097
  • Provider Enumeration Date: 02/12/2021
  • Last Update Date: 02/12/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 3375950009
  • Enrollment ID: I20210325001096

Medical Identifiers

Medical identifiers for Mr William Stephen Forness such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1386237097NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine F09191408 (Missouri)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. Mr William Stephen Forness allows following entities to bill medicare on his behalf.
Entity NameMercy Clinic Burn And Plastic Surgery Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912037433
PECOS PAC ID: 4688622822
Enrollment ID: O20050105000105
Entity NameMercy Clinic Trauma And General Surgery Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699825695
PECOS PAC ID: 1658320700
Enrollment ID: O20050117000142

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. Mr William Stephen Forness 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
Mr William Stephen Forness, FNP-C
1343 Flintshire Ln,
Lake St Louis, MO 63367-1947

Ph: (314) 517-1366
Mr William Stephen Forness, FNP-C
621 S New Ballas Rd Ste 560a,
Saint Louis, MO 63141-8261

Ph: (314) 251-6440

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.