Jon Fielder, MD
NPI 1477685535 · Internal Medicine Physician · Maua
Jon Fielder, MD is a Internal Medicine Physician provider in Maua (NPI 1477685535).
Provider details
- NPI number
- 1477685535
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- M7179 (TX)
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
19 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2007-03-12
- Last updated
- 2015-08-18
Frequently asked questions
- What is Jon Fielder's NPI number?
- Jon Fielder's National Provider Identifier (NPI) is 1477685535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Fielder's specialty?
- Jon Fielder is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Fielder located?
- Jon Fielder's practice location on file with NPPES is Maua Hospital, Maua, 60600.
- What is Jon Fielder's phone number?
- The practice phone number listed in the NPPES registry for Jon Fielder is 254719868501.
- Is Jon Fielder's NPI active?
- Yes — Jon Fielder's NPI (1477685535) is active in the NPPES registry as of the last update on 2015-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.