Vanessa Diaz, MD
NPI 1104934074 · Family Medicine Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vanessa Diaz, MD is a Family Medicine Physician provider in Charleston, SC (NPI 1104934074).
Provider details
- NPI number
- 1104934074
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 23349 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
286 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 91 | $120 |
| 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 | 78 | $16 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 58 | $59 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 27 | $121 |
| Hemoglobin A1c Level83036 | 17 | $10 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 169 | 45 |
| Amlodipine Besylate | 118 | 33 |
| Oxycodone Hcl | 87 | 15 |
| Levothyroxine Sodium | 66 | 20 |
| Hydrochlorothiazide | 65 | 21 |
| Losartan Potassium | 62 | 14 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2020-10-08
- Certified
- 2020-10-08
Frequently asked questions
- What is Vanessa Diaz's NPI number?
- Vanessa Diaz's National Provider Identifier (NPI) is 1104934074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vanessa Diaz's specialty?
- Vanessa Diaz is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Vanessa Diaz located?
- Vanessa Diaz's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-0001.
- What is Vanessa Diaz's phone number?
- The practice phone number listed in the NPPES registry for Vanessa Diaz is (843) 792-1414.
- Does Vanessa Diaz accept Medicare?
- Vanessa Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vanessa Diaz's NPI active?
- Yes — Vanessa Diaz's NPI (1104934074) is active in the NPPES registry as of the last update on 2020-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.