John M Willis, DO - Medicare Internal Medicine in Mansfield, TX

John M Willis, DO is a medicare enrolled "Internal Medicine" physician in Mansfield, Texas. He went to University Of North Texas Hsc, College Of Osteopathic Med and graduated in 1990 and has 34 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Medhealth and his current practice location is 252 Matlock Rd Ste 130, Mansfield, Texas. You can reach out to his office (for appointments etc.) via phone at (682) 242-8990.

John M Willis is licensed to practice in Texas (license number J0366) 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 1205891207.

Contact Information

John M Willis, DO
252 Matlock Rd Ste 130,
Mansfield, TX 76063-4295
(682) 242-8990
(682) 242-8996

Map and Direction




Physician's Profile

Full NameJohn M Willis
GenderMale
SpecialityInternal Medicine
Experience34 Years
Location252 Matlock Rd Ste 130, Mansfield, Texas
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:
  • John M Willis attended and graduated from University Of North Texas Hsc, College Of Osteopathic Med in 1990
  NPI Data:
  • NPI Number: 1205891207
  • Provider Enumeration Date: 04/20/2006
  • Last Update Date: 03/23/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9133210032
  • Enrollment ID: I20070807000557

Medical Identifiers

Medical identifiers for John M Willis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205891207NPI-NPPES
129827510MedicaidTX
8X9688OtherTXBLUE CROSS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine J0366 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Methodist Mansfield Medical CenterMansfield, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Medhealth9931001567306

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. John M Willis allows following entities to bill medicare on his behalf.
Entity NameMedhealth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912957200
PECOS PAC ID: 9931001567
Enrollment ID: O20040123000832

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. John M Willis 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
John M Willis, DO
252 Matlock Rd Ste 130,
Mansfield, TX 76063-4295

Ph: (682) 242-8990
John M Willis, DO
252 Matlock Rd Ste 130,
Mansfield, TX 76063-4295

Ph: (682) 242-8990

Reviews and Comments


Internal Medicine Doctors in Mansfield, TX

Gretchen M Bures, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2700 E Broad St, Mansfield, TX 76063
Phone: 682-242-2000    
Dr. Khuong Dinh Phan, D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 920 Highway 287 N, Suite 308, Mansfield, TX 76063
Phone: 817-473-7197    Fax: 817-473-7198
Dr. John Ira Thurmond, MD.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1011 Matlock Rd, Mansfield, TX 76063
Phone: 817-225-6888    Fax: 817-377-6570
Michael G Mcinnis, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 252 Matlock Rd, Suite 130, Mansfield, TX 76063
Phone: 817-473-7184    Fax: 817-473-7186
Dr. Magdalene Maria Szuszkiewicz-garcia, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2251 Country Club Drive, Ste 131, Mansfield, TX 76063
Phone: 682-518-1100    Fax: 682-518-1104
Hiral Vishal Thakkar, DO
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 2700 E Broad St, Mansfield, TX 76063
Phone: 682-242-2000    
Jaremy Emer James, DO
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 252 Matlock Road, Suite 130, Mansfield, TX 76063
Phone: 817-473-7184    Fax: 817-473-7186

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.