Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Charles Mark Chassay, MD

Individual provider Family Medicine Physician · NPI 1871502724

Dr. Charles Mark Chassay, MD is a Family Medicine Physician in Fort Worth, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

855 Montgomery St
Fort Worth, TX 76107-2553
Phone: (817) 735-2228
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Family Medicine) Physician (primary) Taxonomy 207QS0010X · Licence J4035 (TX)
Family Medicine Physician Taxonomy 207Q00000X · Licence J4035 (TX)

Record details

NPI number1871502724
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 7, 2006
Last updated in NPPESNovember 13, 2020
Certification dateNovember 13, 2020
Mailing address855 Montgomery St, Fort Worth, TX 76107-2553

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