William Stephen Knapp, DO - Medicare Internal Medicine in Florissant, MO

William Stephen Knapp, DO is a medicare enrolled "Family Medicine - Geriatric Medicine" physician in Florissant, Missouri. He went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 1978 and has 46 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice American Multispecialty Group Inc and his current practice location is 2137 Charbonier Rd Ste B, Florissant, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 831-0181.

William Stephen Knapp is licensed to practice in Missouri (license number R8885) 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 1023099140.

Contact Information

William Stephen Knapp, DO
2137 Charbonier Rd Ste B,
Florissant, MO 63031-5500
(314) 831-0181
(314) 851-4471

Map and Direction




Physician's Profile

Full NameWilliam Stephen Knapp
GenderMale
SpecialityInternal Medicine
Experience46 Years
Location2137 Charbonier Rd Ste B, Florissant, 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:
  • William Stephen Knapp attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1978
  NPI Data:
  • NPI Number: 1023099140
  • Provider Enumeration Date: 11/07/2005
  • Last Update Date: 02/08/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 7517980303
  • Enrollment ID: I20071204000712

Medical Identifiers

Medical identifiers for William Stephen Knapp such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023099140NPI-NPPES
D92020OtherMOEXCLUSIVE CHOICE
0100004OtherMOUHC
241162304MedicaidMO
D41519OtherMOMERCY
127448OtherMOGHP
4037831OtherMOAETNA
9108OtherMOBCBS
000000010021OtherMOESSENCE
100734OtherMOHEALTHLINK

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207QG0300XFamily Medicine - Geriatric Medicine R8885 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Barnes-jewish St Peters HospitalSaint peters, MOHospital
Ssm Depaul Health CenterBridgeton, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
American Multispecialty Group Inc1658365572151

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. William Stephen Knapp allows following entities to bill medicare on his behalf.
Entity NameAmerican Multispecialty Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972559532
PECOS PAC ID: 1658365572
Enrollment ID: O20040413001412

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. William Stephen Knapp 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
William Stephen Knapp, DO
Po Box 23340,
Saint Louis, MO 63156-3340

Ph: (314) 831-0181
William Stephen Knapp, DO
2137 Charbonier Rd Ste B,
Florissant, MO 63031-5500

Ph: (314) 831-0181

Reviews and Comments


Family Medicine Doctors in Florissant, MO

Dr. Saima Ahmad, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1025 Dunn Rd, Florissant, MO 63031
Phone: 314-736-1333    Fax: 314-736-1336
Chienyem Adaobi Nweke, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14021 New Halls Ferry Rd, Florissant, MO 63033
Phone: 314-839-0910    
Doris J Tribune Brown, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1225 Graham Rd, Suite 2320c, Florissant, MO 63031
Phone: 314-831-6883    Fax: 314-831-3716
Dr. Mel Emiel Lucas, D.O.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2175 Charbonier Rd, Florissant, MO 63031
Phone: 314-831-5999    Fax: 314-831-9434
Ms. Bessevelyn M. Tables, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1225 Graham Rd Ste C-1340, Florissant, MO 63031
Phone: 314-953-6801    
Dr. Daniel Robert Herleth, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1225 Graham Rd Ste C-2320, Florissant, MO 63031
Phone: 314-953-6801    

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.