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

Mary A Grizzard, FNP-C

Individual provider Family Nurse Practitioner · NPI 1821509266

Mary A Grizzard, FNP-C is a Nurse Practitioner in Nashville, Tennessee. Qualified in 2017, 9 years ago. Practices with Tennessee Oncology PLLC, a 354-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
9
Licensed in
TN
In the registry since
2017
What do these letters mean?
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

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Practice location Address checks out

250 25th Ave N Ste 200
Nashville, TN 37203
Phone: (615) 986-4366
Fax: (615) 320-1617
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 23250 (TN)

Record details

NPI number1821509266
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP-C
Sole proprietorNo
NPI enumeratedOctober 12, 2017
Last updated in NPPESSeptember 5, 2019

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Tennessee Oncology Pllc — 354 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $20,725 10 payments
Travel and Lodging $11,553 38 payments · travel or lodging paid or reimbursed, such as to attend a conference
Consulting Fee $5,540 7 payments
Food and Beverage $2,266 60 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Tennessee Oncology PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 354 clinicians in the practice; 12 are shown here.

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