Tammy Grisham, NP-C
NPI 1619489473 · Family Nurse Practitioner · Port St Lucie, FL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Grisham, NP-C is a Family Nurse Practitioner provider in Port St Lucie, FL (NPI 1619489473).
Provider details
- NPI number
- 1619489473
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 9203521 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,252 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,135 | $92 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 611 | $92 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 150 | $131 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 138 | $145 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 80 | $63 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 112 | 42 |
| Lorazepam | 30 | — |
| Divalproex Sodium | 26 | 14 |
| Mirtazapine | 23 | — |
| Alprazolam | 21 | — |
| Montelukast Sodium | 18 | — |
| Quetiapine Fumarate | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$44 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 725 N 12th Ave Bldg BArcadia, FL 34266-8752Phone: (863) 494-1242Fax: (863) 999-0108
Registry dates
- Enumerated
- 2017-11-01
- Last updated
- 2024-06-18
- Certified
- 2024-06-18
Frequently asked questions
- What is Tammy Grisham's NPI number?
- Tammy Grisham's National Provider Identifier (NPI) is 1619489473, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Grisham's specialty?
- Tammy Grisham is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Grisham located?
- Tammy Grisham's practice location on file with NPPES is 714 Nw Leonardo Cir, Port St Lucie, FL 34986-4354.
- What is Tammy Grisham's phone number?
- The practice phone number listed in the NPPES registry for Tammy Grisham is (954) 448-3913.
- Does Tammy Grisham accept Medicare?
- Tammy Grisham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Grisham's NPI active?
- Yes — Tammy Grisham's NPI (1619489473) is active in the NPPES registry as of the last update on 2024-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.