Dr Charles Mark Chassay, MD - Medicare Family Medicine in Fort Worth, TX

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Dr Charles Mark Chassay, MD is a medicare enrolled "Family Medicine - Sports Medicine" physician in Fort Worth, Texas. His current practice location is 855 Montgomery St, Fort Worth, Texas. You can reach out to his office (for appointments etc.) via phone at (817) 735-2228.

Dr Charles Mark Chassay is licensed to practice in Texas (license number J4035) 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 1871502724.

Contact Information

Dr Charles Mark Chassay, MD
855 Montgomery St,
Fort Worth, TX 76107-2553
(817) 735-2228
Not Available

Map and Direction




Physician's Profile

Full NameDr Charles Mark Chassay
GenderMale
SpecialityFamily Medicine - Sports Medicine
Location855 Montgomery St, Fort Worth, Texas
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1871502724
  • Provider Enumeration Date: 08/07/2006
  • Last Update Date: 11/13/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 8123282498
  • Enrollment ID: I20140326000678

Medical Identifiers

Medical identifiers for Dr Charles Mark Chassay such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1871502724NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine J4035 (Texas)Secondary
207QS0010XFamily Medicine - Sports Medicine J4035 (Texas)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. Dr Charles Mark Chassay allows following entities to bill medicare on his behalf.
Entity NameUt Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033157821
PECOS PAC ID: 8426960360
Enrollment ID: O20031107000268
Entity NameUniversity Of North Texas Health Science Center At Fort Worth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376645564
PECOS PAC ID: 6103717350
Enrollment ID: O20040324001382

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. Dr Charles Mark Chassay 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
Dr Charles Mark Chassay, MD
855 Montgomery St,
Fort Worth, TX 76107-2553

Ph: () -		Dr Charles Mark Chassay, MD
855 Montgomery St,
Fort Worth, TX 76107-2553

Ph: (817) 735-2228

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.