Melinda Haddock-Diaz, DNP, APRN, FNP-C
NPI 1427723089 · Family Nurse Practitioner · Clarksville, TN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melinda Haddock-Diaz, DNP, APRN, FNP-C is a Family Nurse Practitioner provider in Clarksville, TN (NPI 1427723089).
Provider details
- NPI number
- 1427723089
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, APRN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 150229 (TN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,186 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 586 | $90 |
| Assessment of Emotional Or Behavioral Problems96127 | 124 | $4 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 86 | $11 |
| Testing for Presence of Drug, Read By Direct Observation80305 | 76 | $12 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 60 | $82 |
| Automated Urinalysis Test81003 | 47 | $2 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 126 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 246 | 84 |
| Atorvastatin Calcium | 236 | 88 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 200 | 48 |
| Amlodipine Besylate | 158 | 61 |
| Lisinopril | 151 | 62 |
| Omeprazole | 147 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$176 across 10 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
Registry dates
- Enumerated
- 2021-08-14
- Last updated
- 2021-09-25
- Certified
- 2021-08-31
Frequently asked questions
- What is Melinda Haddock-Diaz's NPI number?
- Melinda Haddock-Diaz's National Provider Identifier (NPI) is 1427723089, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melinda Haddock-Diaz's specialty?
- Melinda Haddock-Diaz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melinda Haddock-Diaz located?
- Melinda Haddock-Diaz's practice location on file with NPPES is 198 Old Farmers Rd, Clarksville, TN 37043-4032.
- What is Melinda Haddock-Diaz's phone number?
- The practice phone number listed in the NPPES registry for Melinda Haddock-Diaz is (931) 358-2900.
- Does Melinda Haddock-Diaz accept Medicare?
- Melinda Haddock-Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melinda Haddock-Diaz's NPI active?
- Yes — Melinda Haddock-Diaz's NPI (1427723089) is active in the NPPES registry as of the last update on 2021-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.