Charles Clemmensen, M.D.
NPI 1871551747 · Internal Medicine Physician · Carson City, NV
Charles Clemmensen, M.D. is a Internal Medicine Physician provider in Carson City, NV (NPI 1871551747).
Provider details
- NPI number
- 1871551747
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 3757 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-02
- Last updated
- 2025-09-11
Frequently asked questions
- What is Charles Clemmensen's NPI number?
- Charles Clemmensen's National Provider Identifier (NPI) is 1871551747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Clemmensen's specialty?
- Charles Clemmensen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Clemmensen located?
- Charles Clemmensen's practice location on file with NPPES is 1100 S Carson St, Carson City, NV 89701-5232.
- What is Charles Clemmensen's phone number?
- The practice phone number listed in the NPPES registry for Charles Clemmensen is (775) 883-7811.
- Is Charles Clemmensen's NPI active?
- Yes — Charles Clemmensen's NPI (1871551747) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.