Tonya L Gray, MD - Medicare Family Practice in Mason City, IA

Tonya L Gray, MD is a medicare enrolled "Family Medicine" physician in Mason City, Iowa. She went to University Of Iowa, Rj & L Carver College Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice North Iowa Mercy Clinics and her current practice location is 1010 4th St Sw, Mason City, Iowa. You can reach out to her office (for appointments etc.) via phone at (641) 422-6020.

Tonya L Gray is licensed to practice in Iowa (license number 35644) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1427164201.

Contact Information

Tonya L Gray, MD
1010 4th St Sw,
Mason City, IA 50401-2857
(641) 422-6020
(641) 422-7803

Map and Direction




Physician's Profile

Full NameTonya L Gray
GenderFemale
SpecialityFamily Practice
Experience26 Years
Location1010 4th St Sw, Mason City, Iowa
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Tonya L Gray attended and graduated from University Of Iowa, Rj & L Carver College Of Medicine in 1998
  NPI Data:
  • NPI Number: 1427164201
  • Provider Enumeration Date: 08/22/2006
  • Last Update Date: 11/27/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9739157587
  • Enrollment ID: I20040920001265

Medical Identifiers

Medical identifiers for Tonya L Gray such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1427164201NPI-NPPES
37238OtherIAWELLMARK
0447698MedicaidIA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 35644 (Iowa)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercyone North Iowa Medical CenterMason city, IAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North Iowa Mercy Clinics7810809076247

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. Tonya L Gray allows following entities to bill medicare on her behalf.
Entity NameNorth Iowa Mercy Clinics
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780278242
PECOS PAC ID: 7810809076
Enrollment ID: O20031105000273

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. Tonya L Gray 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
Tonya L Gray, MD
621 S Illinois Ave, Suite 103,
Mason City, IA 50401-5489

Ph: (641) 494-3041
Tonya L Gray, MD
1010 4th St Sw,
Mason City, IA 50401-2857

Ph: (641) 422-6020

Reviews and Comments


Family Medicine Doctors in Mason City, IA

David H Hanson, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 101 S Taylor Ave, Mason City, IA 50401
Phone: 641-422-7766    Fax: 641-422-7788
Dr. Mahad Rayale, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1000 4th St Sw, Mason City, IA 50401
Phone: 641-428-7000    
Dr. Chad M Mccambridge, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1010 4th St Sw, Suite 340, Mason City, IA 50401
Phone: 641-428-7766    Fax: 641-428-7788
Patrick Alan Courtney, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1010 4th St Sw Ste 240, Mason City, IA 50401
Phone: 641-428-7766    Fax: 641-428-7125
Amanda Tran, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1010 4th St Sw Ste 340, Mason City, IA 50401
Phone: 641-428-7766    Fax: 641-428-7788
Wei Song, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 101 S Taylor Ave, Mason City, IA 50401
Phone: 641-422-7779    
Dr. Arla Mcvicker, D.O.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 520 S Pierce Ave, Suite 150, Mason City, IA 50401
Phone: 641-421-8077    Fax: 641-494-5005

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.