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

Tassy N. Hayden, MD

Individual provider Family Medicine Physician · NPI 1871889303

Tassy N. Hayden, MD is a Family Practice in Saint Louis, Missouri. Graduated from Washington University School of Medicine in 2011, 15 years ago. Practices with Mass General Brigham Medical Group Western Massachusetts Inc, a 293-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Missouri.

Years since qualifying
15
Trained at
Washington University School of Medicine
Licensed in
MA, MO
In the registry since
2011
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

2340 Hampton Ave
Saint Louis, MO 63139-2935
Phone: (314) 647-2200
Fax: (314) 647-4172
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 405 Main St, Hillsboro, MO 63050-4351 — (636) 797-3737

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2014021718 (MO)
Family Medicine Physician Taxonomy 207Q00000X · Licence 248385 (MA)

Record details

NPI number1871889303
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 23, 2011
Last updated in NPPESMay 10, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Mass General Brigham Medical Group Western Massachusetts Inc — 293 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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