David Marshall, MD
NPI 1083669527 · Radiation Oncology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Marshall, MD is a Radiation Oncology Physician provider in Charleston, SC (NPI 1083669527).
Provider details
- NPI number
- 1083669527
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27463 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
903 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 124 | $42 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 117 | $42 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 117 | $91 |
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 99 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 74 | $102 |
| Calculation of Radiation Therapy Dose77300 | 42 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 190 | 58 |
| Relugolixbrand: Orgovyx | 41 | — |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 36 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 33 | — |
| Celecoxib | 17 | — |
| Silodosin | 16 | — |
| Tolterodine Tartratebrand: Tolterodine Tartrate Er | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 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
- 2006-05-23
- Last updated
- 2020-10-14
- Certified
- 2020-10-14
Frequently asked questions
- What is David Marshall's NPI number?
- David Marshall's National Provider Identifier (NPI) is 1083669527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Marshall's specialty?
- David Marshall is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Marshall located?
- David Marshall's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-0001.
- What is David Marshall's phone number?
- The practice phone number listed in the NPPES registry for David Marshall is (843) 792-1414.
- Does David Marshall accept Medicare?
- David Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Marshall's NPI active?
- Yes — David Marshall's NPI (1083669527) is active in the NPPES registry as of the last update on 2020-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.