NPPES file of Aug 9, 2026

Nathaniel M. Grassi, MS

Mental Health Counselor · Jacksonville, FL

Nathaniel M. Grassi, MS is a mental health counselor with a practice address in Jacksonville, Florida, and NPI 1881371615, issued on Jul 3, 2023. Check the license (Florida MH25377, as entered in NPPES) on the Florida health license search; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881371615
Name
Nathaniel M. Grassi
Credential
MS
Primary taxonomy
Mental Health Counselor 101YM0800X
License number
MH25377 FL
Self-reported in NPPES; status is on the state search
Practice location
836 Prudential Dr Ste 1507, Jacksonville, FL 32207
Phone
(904) 376-3800
Enumerated
Jul 3, 2023
Record last updated
Apr 27, 2026
Medicare enrollment
Enrolled (PECOS I20260506001010); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest mental health counselor records → All 23,249 in Florida → Look up another NPI →

Also registered at 836 Prudential Dr Ste 1507

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Deborah Anthony, LMHCMental Health Counselor1790018919
  2. Christine Crews, ARNPPsychiatric/Mental Health Nurse Practitioner1053807750
  3. Deidra Davis, LCSWClinical Social Worker1821867425
  4. Allison Fendley, LMHCMental Health Counselor1770355430
  5. Amanda Glynn, DNP, APRN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1982301784
  6. Dorie Hanson, LMHCMental Health Counselor1740655018

Verify Nathaniel M. Grassi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license MH25377    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Florida license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Nathaniel M. Grassi among 23,249 mental health counselor records in Florida

Nathaniel M. Grassi, MS is one of 23,249 mental health counselor records with a practice address in Florida. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 78% of them.

  • NPI issued2023 · 78% of these records are older, 16% newer
  • In a Medicare fileNo · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 12% of these records are
  • Graduated2022 · median 2014 among the 2,844 with a school on file
  • Record last updated2026 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,365 mental health counselor records list a practice address in Jacksonville

They are 1,365 of the 24,194 NPPES records with a practice address in Jacksonville, and 23,249 mental health counselor records in Florida. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 23,249 in Florida → Every provider in Jacksonville → Mental Health Counselor nationwide →

The 8 mental health counselor records with the nearest ZIP codes

  1. Joanne Bridegan, LMHCJacksonville, FL 322071487731980
  2. Louisa Etheredge, M.ED. IN COUN. ED.Jacksonville, FL 322071457454779
  3. Lori Frazier, M. A., LMHCJacksonville, FL 322071497864938
  4. Paula Griffin, LMHCJacksonville, FL 322071518019710
  5. Karon Ivey, LMHCJacksonville, FL 322071255408415
  6. Willie Lott, LMHCJacksonville, FL 322071578613402
  7. Brittany Matthew-Wilton, LMHCJacksonville, FL 322071467531053
  8. Marcia McKetty, LMHCJacksonville, FL 322071295882298

Common questions

What is Nathaniel M. Grassi, MS's NPI number?

Nathaniel M. Grassi, MS's National Provider Identifier (NPI) is 1881371615, issued on Jul 3, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Nathaniel M. Grassi, MS located?

The NPPES record lists a practice address at 836 Prudential Dr Ste 1507, Jacksonville, FL, 32207. Phone: (904) 376-3800. Providers update this record themselves, so call before visiting.

How can I verify Nathaniel M. Grassi, MS's license?

NPPES lists Florida license number MH25377, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.