Charles Mark Chassay, M.D.
Sports Medicine (Family Medicine) Physician · Fort Worth, TX
Charles Mark Chassay, M.D. is a sports medicine (family medicine) physician with a practice address in Fort Worth, Texas, and NPI 1871502724, issued on Aug 7, 2006. Check the license (Texas J4035, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Charles Mark Chassay
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Family Medicine) Physician 207QS0010X
- License number
- J4035 TX
Self-reported in NPPES; status is on the state search - Practice location
- 855 Montgomery St, Fort Worth, TX 76107
- Phone
- (817) 735-2228
- Enumerated
- Aug 7, 2006
- Record last updated
- Nov 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest sports medicine (family medicine) physician records → All 198 in Texas → Look up another NPI →
Also registered at 855 Montgomery St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Mark Chassay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J4035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $28.86
1 payment: food and beverage; the largest payer was Medtronic, Inc. The 1,218 providers of this specialty with any payment received $781.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Charles Mark Chassay among 198 sports medicine (family medicine) physician records in Texas
Charles Mark Chassay, M.D. is one of 198 sports medicine (family medicine) physician records with a practice address in Texas. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 82% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2020 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Family Medicine) Physician providers in Texas
There are 198 sports medicine (family medicine) physician records in Texas.
All 198 in Texas → Every provider in Fort Worth → Sports Medicine (Family Medicine) Physician nationwide →
The 8 sports medicine (family medicine) physician records with the nearest ZIP codes
- Alex Autry, D.O.Fort Worth, TX 761041982845343
- Krystle Farmer, M.D.Fort Worth, TX 761041033418207
- Jaeeun Go, MDFort Worth, TX 761041962080564
- Joshua Manuel, MDFort Worth, TX 761041326629502
- Travis Rhodes, D.O.Fort Worth, TX 761041275979056
- Christopher Mann, DOFort Worth, TX 761121386613842
- Anil Bangale, M.D.River Oaks, TX 761141124071154
- Jeffery Hawkins, M.D.Fort Worth, TX 761231609175843
Common questions
What is Charles Mark Chassay, M.D.'s NPI number?
Charles Mark Chassay, M.D.'s National Provider Identifier (NPI) is 1871502724, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Mark Chassay, M.D. located?
The NPPES record lists a practice address at 855 Montgomery St, Fort Worth, TX, 76107. Phone: (817) 735-2228. Providers update this record themselves, so call before visiting.
How can I verify Charles Mark Chassay, M.D.'s license?
NPPES lists Texas license number J4035, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.