Leonard Fieber, MD
NPI 1083653596 · Internal Medicine Physician · Tucson, AZ
Leonard Fieber, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1083653596).
Provider details
- NPI number
- 1083653596
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 12289 (AZ)
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
- 2006-06-06
- Last updated
- 2008-04-25
Frequently asked questions
- What is Leonard Fieber's NPI number?
- Leonard Fieber's National Provider Identifier (NPI) is 1083653596, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Fieber's specialty?
- Leonard Fieber is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Fieber located?
- Leonard Fieber's practice location on file with NPPES is 9302 E 22nd Street, Tucson, AZ 85710.
- What is Leonard Fieber's phone number?
- The practice phone number listed in the NPPES registry for Leonard Fieber is (520) 298-0147.
- Is Leonard Fieber's NPI active?
- Yes — Leonard Fieber's NPI (1083653596) is active in the NPPES registry as of the last update on 2008-04-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.