William Martin Schnitz, MD - Medicare Rheumatology in Oklahoma City, OK

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William Martin Schnitz, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Oklahoma City, Oklahoma. He graduated from medical school in 1987 and has 39 years of diverse experience with area of expertise as Rheumatology. He is a member of the group practice Optimum Primary Care Pllc, Absentee Shawnee Tribal Health Authority, Inc, Central Oklahoma American Indian Health Council, Inc. and his current practice location is 3555 Nw 58th St Ste 804, Oklahoma City, Oklahoma. You can reach out to his office (for appointments etc.) via phone at (405) 548-0430.

William Martin Schnitz is licensed to practice in Oklahoma (license number 16521) 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 1629015763.

Contact Information

William Martin Schnitz, MD
3555 Nw 58th St Ste 804,
Oklahoma City, OK 73112-4703
(405) 548-0430
(405) 463-4408

Map and Direction




Physician's Profile

Full NameWilliam Martin Schnitz
GenderMale
SpecialityRheumatology
Experience39 Years
Location3555 Nw 58th St Ste 804, Oklahoma City, Oklahoma
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 Martin Schnitz graduated from medical school in 1987
  NPI Data:
  • NPI Number: 1629015763
  • Provider Enumeration Date: 05/31/2006
  • Last Update Date: 07/20/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 8628038387
  • Enrollment ID: I20041016000179

Medical Identifiers

Medical identifiers for William Martin Schnitz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629015763NPI-NPPES
100095820BMedicaidOK

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 16521 (Oklahoma)Primary
207R00000XInternal Medicine 16521 (Oklahoma)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stillwater Medical CenterStillwater, OKHospital
Integris Baptist Medical Center, IncOklahoma city, OKHospital
Onecore HealthOklahoma city, OKHospital
Ssm Health St Anthony Hospital - ShawneeShawnee, OKHospital
Ou Health University Of Oklahoma Medical CenterOklahoma city, OKHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Optimum Primary Care Pllc226485392814
Absentee Shawnee Tribal Health Authority, Inc579917108883
Central Oklahoma American Indian Health Council, Inc.347661737460

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 Martin Schnitz allows following entities to bill medicare on his behalf.
Entity NameWilliam M Schnitz MD PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205968435
PECOS PAC ID: 3274593934
Enrollment ID: O20041016000145
Entity NameRheumatic Diseases Clinic of Oklahoma PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942691175
PECOS PAC ID: 9931410156
Enrollment ID: O20150615001561
Entity NameOptimum Primary Care PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760030399
PECOS PAC ID: 2264853928
Enrollment ID: O20200604001174
Entity NameAbsentee Shawnee Tribal Health Authority, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942253521
PECOS PAC ID: 5799171088
Enrollment ID: O20220414000294

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 Martin Schnitz 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 Martin Schnitz, MD
3555 Nw 58th St Ste 804,
Oklahoma City, OK 73112-4703

Ph: (405) 548-0430		William Martin Schnitz, MD
3555 Nw 58th St Ste 804,
Oklahoma City, OK 73112-4703

Ph: (405) 548-0430

Reviews and Comments


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Phone: 405-644-5428    Fax: 405-644-5429

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.