Catherine Elizabeth Klein, MD
Hematology & Oncology Physician · Denver, CO
Catherine Elizabeth Klein, MD is a hematology & oncology physician with a practice address in Denver, Colorado, and NPI 1942276472, issued on Feb 24, 2006. Check the license (Colorado 23625, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Elizabeth Klein
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 23625 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1055 Clermont St, Denver, CO 80220
- Phone
- (303) 399-8020
- Enumerated
- Feb 24, 2006
- Record last updated
- Feb 25, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (303) 393-5106
- Medicaid ID
- 01236256 CO
- Medicare enrollment
- Enrolled (PECOS I20041228000885); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 212 in Colorado → Look up another NPI →
Also registered at 1055 Clermont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heather Able, RNRegistered Nurse1124264726
- Sergio Aguilar, MSWClinical Social Worker1497099352
- Stephen Albert, D.P.M.Primary Podiatric Medicine Podiatrist1497798144
- Mary Albyn, R.PH.Pharmacist1477689073
- Edward Alvarez, RNRegistered Nurse1407919459
- Colleen Ambrozy, BS PHARMPharmacist1174570980
Verify Catherine Elizabeth Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 23625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Elizabeth Klein among 212 hematology & oncology physician records in Colorado
Catherine Elizabeth Klein, MD is one of 212 hematology & oncology physician records with a practice address in Colorado. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 30% of them.
- NPI issued2006 · 30% of these records are older, 51% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1977 · median 2004 among the 150 with a school on file
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Colorado
There are 212 hematology & oncology physician records in Colorado.
All 212 in Colorado → Every provider in Denver → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Alan Feiner, MDDenver, CO 802201922082643
- Mabel Mardones, M.D.Denver, CO 802201134446461
- Eduardo Pajon, M.D.Denver, CO 802201861445264
- Devchand Paul, PHD DODenver, CO 802201841274164
- Scot Sedlacek, MDDenver, CO 802201215911540
- Alireza Eghtedar, M.D.Denver, CO 802181811280431
- Kerry Fisher, MDDenver, CO 802181730195033
- Peter Forsberg, MDDenver, CO 802181063656726
Common questions
What is Catherine Elizabeth Klein, MD's NPI number?
Catherine Elizabeth Klein, MD's National Provider Identifier (NPI) is 1942276472, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Elizabeth Klein, MD located?
The NPPES record lists a practice address at 1055 Clermont St, Denver, CO, 80220. Phone: (303) 399-8020. Providers update this record themselves, so call before visiting.
How can I verify Catherine Elizabeth Klein, MD's license?
NPPES lists Colorado license number 23625, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Catherine Elizabeth Klein, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.