Catherine Klein, MD
NPI 1942276472 · Hematology & Oncology Physician · Denver, CO
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Klein, MD is a Hematology & Oncology Physician provider in Denver, CO (NPI 1942276472).
Provider details
- NPI number
- 1942276472
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 23625 (CO)
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
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
- 2006-02-24
- Last updated
- 2013-02-25
Frequently asked questions
- What is Catherine Klein's NPI number?
- Catherine Klein's National Provider Identifier (NPI) is 1942276472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Klein's specialty?
- Catherine Klein is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Klein located?
- Catherine Klein's practice location on file with NPPES is 1055 Clermont St, Denver, CO 80220-3808.
- What is Catherine Klein's phone number?
- The practice phone number listed in the NPPES registry for Catherine Klein is (303) 399-8020.
- Does Catherine Klein accept Medicare?
- Catherine Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Klein's NPI active?
- Yes — Catherine Klein's NPI (1942276472) is active in the NPPES registry as of the last update on 2013-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.