Marcia Diaz, ARNP
NPI 1558347328 · Family Nurse Practitioner · Vinita, OK
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcia Diaz, ARNP is a Family Nurse Practitioner provider in Vinita, OK (NPI 1558347328).
Provider details
- NPI number
- 1558347328
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- R0074291 (OK)
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
20 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
759 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 | 266 | $72 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 252 | $62 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 119 | $44 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 48 | $11 |
| Administration of Influenza Virus VaccineG0008 | 36 | $30 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 130 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 241 | 63 |
| Lisinopril | 224 | 59 |
| Levothyroxine Sodium | 218 | 41 |
| Omeprazole | 215 | 42 |
| Hydrochlorothiazide | 180 | 43 |
| Gabapentin | 173 | 33 |
| Rosuvastatin Calcium | 154 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$131 across 7 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
- 2005-12-22
- Last updated
- 2008-07-24
Frequently asked questions
- What is Marcia Diaz's NPI number?
- Marcia Diaz's National Provider Identifier (NPI) is 1558347328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Diaz's specialty?
- Marcia Diaz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcia Diaz located?
- Marcia Diaz's practice location on file with NPPES is 715 N Foreman St, Vinita, OK 74301-1422.
- What is Marcia Diaz's phone number?
- The practice phone number listed in the NPPES registry for Marcia Diaz is (918) 256-8731.
- Does Marcia Diaz accept Medicare?
- Marcia Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcia Diaz's NPI active?
- Yes — Marcia Diaz's NPI (1558347328) is active in the NPPES registry as of the last update on 2008-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.