Lillian Klancar, M.D.
NPI 1598798761 · Hematology & Oncology Physician · Lone Tree, CO
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Klancar, M.D. is a Hematology & Oncology Physician provider in Lone Tree, CO (NPI 1598798761).
Provider details
- NPI number
- 1598798761
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 37812 (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
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 176 | 56 |
| Anastrozole | 118 | 42 |
| Tamoxifen Citrate | 90 | 34 |
| Palbociclibbrand: Ibrance | 73 | — |
| Dexamethasone | 45 | 18 |
| Ondansetron Hcl | 44 | 21 |
| Exemestane | 43 | 16 |
| Alendronate Sodium | 40 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-09
- Last updated
- 2021-06-21
- Certified
- 2021-06-21
Frequently asked questions
- What is Lillian Klancar's NPI number?
- Lillian Klancar's National Provider Identifier (NPI) is 1598798761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Klancar's specialty?
- Lillian Klancar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Lillian Klancar located?
- Lillian Klancar's practice location on file with NPPES is 10240 Park Meadows Dr, Lone Tree, CO 80124-5425.
- What is Lillian Klancar's phone number?
- The practice phone number listed in the NPPES registry for Lillian Klancar is (303) 338-4545.
- Does Lillian Klancar accept Medicare?
- Lillian Klancar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Klancar's NPI active?
- Yes — Lillian Klancar's NPI (1598798761) is active in the NPPES registry as of the last update on 2021-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.