Johannelda Diaz, MSN-FNP
NPI 1457850141 · Family Nurse Practitioner · Ewing, NJ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johannelda Diaz, MSN-FNP is a Family Nurse Practitioner provider in Ewing, NJ (NPI 1457850141).
Provider details
- NPI number
- 1457850141
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN-FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 26NJ00790600 (NJ)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
339 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 | 122 | $114 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 100 | $80 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 71 | $14 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 24 | $114 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 22 | $56 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 243 | 32 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 178 | 36 |
| Clonazepam | 87 | 14 |
| Atorvastatin Calcium | 77 | 19 |
| Zolpidem Tartrate | 71 | 14 |
| Metoprolol Succinate | 69 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$113 across 1 record (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
- 2018-02-07
- Last updated
- 2018-02-07
Frequently asked questions
- What is Johannelda Diaz's NPI number?
- Johannelda Diaz's National Provider Identifier (NPI) is 1457850141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johannelda Diaz's specialty?
- Johannelda Diaz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Johannelda Diaz located?
- Johannelda Diaz's practice location on file with NPPES is 1440 Pennington Rd Ste 1, Ewing, NJ 08618-2669.
- What is Johannelda Diaz's phone number?
- The practice phone number listed in the NPPES registry for Johannelda Diaz is (609) 890-1050.
- Does Johannelda Diaz accept Medicare?
- Johannelda Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johannelda Diaz's NPI active?
- Yes — Johannelda Diaz's NPI (1457850141) is active in the NPPES registry as of the last update on 2018-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.