Charles D. Marshall, MD
Internal Medicine Physician · Denver, CO
Charles D. Marshall, MD is an internal medicine physician with a practice address in Denver, Colorado, and NPI 1568573905, issued on Aug 31, 2006. Check the license (Colorado 44754, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Charles D. Marshall
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 44754 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1375 E 19TH Ave, Denver, CO 80218
- Phone
- (303) 338-4545
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 21, 2022
- Medicaid ID
- 19171226 CO
- Medicare enrollment
- Enrolled (PECOS I20061106000046); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 1375 E 19TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bruce Adams, M.D.Emergency Medicine Physician1407946197
- Michele Adams, RNRegistered Nurse1851242572
- Drew Albright, D.O.Surgery Physician1578944633
- Corrie Alonzo, M.D.Neonatal-Perinatal Medicine Physician1073956033
- Amanda Alpert, RNRegistered Nurse1861086936
- Ainsley Anderson, M.D.Emergency Medicine Physician1558756569
Verify Charles D. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 44754Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
321 Medicare Part D claims for 63 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium34 claims
- Rosuvastatin Calcium28 claims
- Metoprolol Tartrate17 claims
- Losartan Potassium16 claims
- Tamsulosin Hcl15 claims
- Jardiance14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Colorado Permanente Medical Group PCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles D. Marshall among 2,046 internal medicine physician records in Colorado
Charles D. Marshall, MD is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2003 · median 2006 among the 1,090 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
493 internal medicine physician records list a practice address in Denver
They are 493 of the 25,068 NPPES records with a practice address in Denver, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Denver → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- August Anneberg, M.D.Denver, CO 802181225000508
- Samuel Brown, MDDenver, CO 802181245206515
- Nicola Bugelli, MDDenver, CO 802181760460695
- Alan Burgess, MDDenver, CO 802181003804931
- Aaron Calderon, MDDenver, CO 802181124075353
- Stephen Carmel, MDDenver, CO 802181245260017
- Elizabeth Cyran, MD, MSPHDenver, CO 802181184662108
- Brian Dwinnell, M.D.Denver, CO 802181992725964
Common questions
What is Charles D. Marshall, MD's NPI number?
Charles D. Marshall, MD's National Provider Identifier (NPI) is 1568573905, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles D. Marshall, MD located?
The NPPES record lists a practice address at 1375 E 19TH Ave, Denver, CO, 80218. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Charles D. Marshall, MD's license?
NPPES lists Colorado license number 44754, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles D. Marshall, MD prescribe under Medicare Part D?
In 2024, Charles D. Marshall, MD had 321 Medicare Part D claims for 63 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.