Mark Wesselman, MD
Internal Medicine Physician · Denver, CO
Mark Wesselman, MD is an internal medicine physician with a practice address in Denver, Colorado, and NPI 1598822124, issued on Jan 2, 2007. Check the license (Colorado DR.0056888, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Wesselman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- DR.0056888 CO
91347 NM
Self-reported in NPPES; status is on the state search - Practice location
- 700 E Speer Blvd, Denver, CO 80203
- Phone
- (303) 335-9742
- Enumerated
- Jan 2, 2007
- Entity
- Type 1 · individual
Also registered at 700 E Speer Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Wesselman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0056888Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
632 internal medicine physician records list a Denver practice address
They are 632 of the 25,068 NPPES records with a Denver practice address, and 2,683 internal medicine physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 632 in Denver → All 2,683 in Colorado → Every provider in Denver →
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Common questions
What is Mark Wesselman, MD's NPI number?
Mark Wesselman, MD's National Provider Identifier (NPI) is 1598822124, issued on Jan 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Wesselman, MD located?
The NPPES record lists a practice address at 700 E Speer Blvd, Denver, CO, 80203. Phone: (303) 335-9742. Providers update this record themselves, so call before visiting.
How can I verify Mark Wesselman, MD's license?
NPPES lists Colorado license number DR.0056888, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.