Charles Marshall, MD
NPI 1568573905 · Internal Medicine Physician · Denver, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Marshall, MD is a Internal Medicine Physician provider in Denver, CO (NPI 1568573905).
Provider details
- NPI number
- 1568573905
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44754 (CO)
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
19 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 34 | 17 |
| Rosuvastatin Calcium | 28 | 11 |
| Metoprolol Tartrate | 17 | — |
| Losartan Potassium | 16 | — |
| Tamsulosin Hcl | 15 | — |
| Empagliflozinbrand: Jardiance | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2022-07-21
- Certified
- 2021-06-18
Frequently asked questions
- What is Charles Marshall's NPI number?
- Charles Marshall's National Provider Identifier (NPI) is 1568573905, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Marshall's specialty?
- Charles Marshall is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Marshall located?
- Charles Marshall's practice location on file with NPPES is 1375 E 19th Ave, Denver, CO 80218-1114.
- What is Charles Marshall's phone number?
- The practice phone number listed in the NPPES registry for Charles Marshall is (303) 338-4545.
- Does Charles Marshall accept Medicare?
- Charles Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Marshall's NPI active?
- Yes — Charles Marshall's NPI (1568573905) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.