Charles Clemmensen, M.D.
Internal Medicine Physician · Carson City, NV
Charles Clemmensen, M.D. is an internal medicine physician with a practice address in Carson City, Nevada, and NPI 1871551747, issued on May 2, 2006. Check the license (Nevada 3757, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Charles Clemmensen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 3757 NV
Self-reported in NPPES; status is on the state search - Practice location
- 1100 S Carson St, Carson City, NV 89701
- Phone
- (775) 883-7811
- Enumerated
- May 2, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,229 in Nevada → Look up another NPI →
Also registered at 1100 S Carson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Clemmensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 3757Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $38.75
1 payment: compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Charles Clemmensen among 1,229 internal medicine physician records in Nevada
Charles Clemmensen, M.D. is one of 1,229 internal medicine physician records with a practice address in Nevada. 82% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 43% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Carson City
They are 18 of the 1,556 NPPES records with a practice address in Carson City, and 1,229 internal medicine physician records in Nevada.
All 1,229 in Nevada → Every provider in Carson City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alexander Azzam, MDCarson City, NV 897031306309935
- Peter Barnett, MDCarson City, NV 897031437165149
- B Bottenberg, D.O.Carson City, NV 897031942210349
- Paula Crenshaw, MDCarson City, NV 897031902880669
- Robert Fliegler, MDCarson City, NV 897031598773699
- Ryan Monti, M.D.Carson City, NV 897031629496880
- Larry Pappas, M.D.Carson City, NV 897031124080007
- Craig Rau, M.D.Carson City, NV 897031275584906
Common questions
What is Charles Clemmensen, M.D.'s NPI number?
Charles Clemmensen, M.D.'s National Provider Identifier (NPI) is 1871551747, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Clemmensen, M.D. located?
The NPPES record lists a practice address at 1100 S Carson St, Carson City, NV, 89701. Phone: (775) 883-7811. Providers update this record themselves, so call before visiting.
How can I verify Charles Clemmensen, M.D.'s license?
NPPES lists Nevada license number 3757, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. 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), 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.