Maria Jennifer Diaz, C.R.N.P.
NPI 1952338733 · Nurse Practitioner · Charleston, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Jennifer Diaz, C.R.N.P. is a Nurse Practitioner provider in Charleston, SC (NPI 1952338733).
Provider details
- NPI number
- 1952338733
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- C.R.N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- R112353 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
24 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $53 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $77 |
Typical Medicare-allowed amounts for these services range $53–$77 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 600 N Wolfe StBaltimore, MD 21287-0005Phone: (410) 955-5464
Registry dates
- Enumerated
- 2006-06-27
- Last updated
- 2018-08-14
Frequently asked questions
- What is Maria Jennifer Diaz's NPI number?
- Maria Jennifer Diaz's National Provider Identifier (NPI) is 1952338733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Jennifer Diaz's specialty?
- Maria Jennifer Diaz is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Jennifer Diaz located?
- Maria Jennifer Diaz's practice location on file with NPPES is 171 Ashley Avenue, Charleston, SC 29425.
- What is Maria Jennifer Diaz's phone number?
- The practice phone number listed in the NPPES registry for Maria Jennifer Diaz is (843) 792-1414.
- Does Maria Jennifer Diaz accept Medicare?
- Maria Jennifer Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Jennifer Diaz's NPI active?
- Yes — Maria Jennifer Diaz's NPI (1952338733) is active in the NPPES registry as of the last update on 2018-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.