Marchelle Giannini, M.D.
NPI 1174588503 · Diagnostic Radiology Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marchelle Giannini, M.D. is a Diagnostic Radiology Physician provider in Dallas, TX (NPI 1174588503).
Provider details
- NPI number
- 1174588503
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- R9357 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
719 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) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 313 | $180 |
| Ct Scan of Chest With Contrast71260 | 104 | $118 |
| Ct Scan of Chest Without Contrast71250 | 87 | $134 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 47 | $87 |
| Ct Scan of Abdomen and Pelvis Before and After Contrast74178 | 42 | $193 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-19
- Last updated
- 2026-04-23
- Certified
- 2026-04-23
Frequently asked questions
- What is Marchelle Giannini's NPI number?
- Marchelle Giannini's National Provider Identifier (NPI) is 1174588503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marchelle Giannini's specialty?
- Marchelle Giannini is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marchelle Giannini located?
- Marchelle Giannini's practice location on file with NPPES is 2825 Oak Lawn Ave Unit 192749, Dallas, TX 75219-4688.
- What is Marchelle Giannini's phone number?
- The practice phone number listed in the NPPES registry for Marchelle Giannini is (844) 389-5711.
- Does Marchelle Giannini accept Medicare?
- Marchelle Giannini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marchelle Giannini's NPI active?
- Yes — Marchelle Giannini's NPI (1174588503) is active in the NPPES registry as of the last update on 2026-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.