James Klein, MD
NPI 1194747691 · Colon & Rectal Surgery Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Colorectal Surgery (proctology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Klein, MD is a Colon & Rectal Surgery Physician provider in Tucson, AZ (NPI 1194747691).
Provider details
- NPI number
- 1194747691
- Entity type
- Individual
- Primary specialty
- Colon & Rectal Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5352 (AZ)
Specialties & taxonomies
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
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
- 2006-07-24
- Last updated
- 2021-03-08
- Certified
- 2021-03-08
Frequently asked questions
- What is James Klein's NPI number?
- James Klein's National Provider Identifier (NPI) is 1194747691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Klein's specialty?
- James Klein is listed in the NPPES registry with a primary specialty of Colon & Rectal Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is James Klein located?
- James Klein's practice location on file with NPPES is 1601 N Tucson Blvd, Tucson, AZ 85716.
- What is James Klein's phone number?
- The practice phone number listed in the NPPES registry for James Klein is (520) 795-9484.
- Does James Klein accept Medicare?
- James Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Klein's NPI active?
- Yes — James Klein's NPI (1194747691) is active in the NPPES registry as of the last update on 2021-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.