Marshall Waller, MD
NPI 1093394157 · Internal Medicine Physician · Washington, DC
Marshall Waller, MD is a Internal Medicine Physician provider in Washington, DC (NPI 1093394157).
Provider details
- NPI number
- 1093394157
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD600001638 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 34 | 14 |
| Amlodipine Besylate | 16 | — |
| Hydrochlorothiazide | 14 | — |
| Fluticasone Propionate | 13 | — |
| Losartan Potassium | 13 | — |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 11 | — |
| Azelastine Hcl | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-06
- Last updated
- 2025-03-03
- Certified
- 2025-03-03
Frequently asked questions
- What is Marshall Waller's NPI number?
- Marshall Waller's National Provider Identifier (NPI) is 1093394157, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Waller's specialty?
- Marshall Waller is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Waller located?
- Marshall Waller's practice location on file with NPPES is 50 Irving St Nw, Washington, DC 20422-0001.
- What is Marshall Waller's phone number?
- The practice phone number listed in the NPPES registry for Marshall Waller is (202) 745-8000.
- Is Marshall Waller's NPI active?
- Yes — Marshall Waller's NPI (1093394157) is active in the NPPES registry as of the last update on 2025-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.