Charles Graeber, MD
NPI 1801867452 · Nephrology Physician · Naples, FL
Charles Graeber, MD is a Nephrology Physician provider in Naples, FL (NPI 1801867452).
Provider details
- NPI number
- 1801867452
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 020577 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-31
- Last updated
- 2022-07-21
Frequently asked questions
- What is Charles Graeber's NPI number?
- Charles Graeber's National Provider Identifier (NPI) is 1801867452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Graeber's specialty?
- Charles Graeber is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Graeber located?
- Charles Graeber's practice location on file with NPPES is 311 9th St N Ste 100, Naples, FL 34102-5886.
- What is Charles Graeber's phone number?
- The practice phone number listed in the NPPES registry for Charles Graeber is (239) 624-0940.
- Is Charles Graeber's NPI active?
- Yes — Charles Graeber's NPI (1801867452) 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.