Linda Ferris, DO
NPI 1902886021 · Hematology & Oncology Physician · Warrenville, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Linda Ferris, DO is a Hematology & Oncology Physician provider in Warrenville, IL (NPI 1902886021).
Provider details
- NPI number
- 1902886021
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036107361 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
549 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 403 | $191 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $135 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 26 | $234 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 19 | $82 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $181 |
Typical Medicare-allowed amounts for these services range $82–$234 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 59 | 39 |
| Dexamethasone | 31 | 21 |
| Ondansetronbrand: Ondansetron Odt | 24 | 20 |
| Apixabanbrand: Eliquis | 22 | — |
| Rivaroxabanbrand: Xarelto | 22 | — |
| Gabapentin | 17 | — |
| Lenalidomidebrand: Revlimid |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-17
- Last updated
- 2013-01-22
Frequently asked questions
- What is Linda Ferris's NPI number?
- Linda Ferris's National Provider Identifier (NPI) is 1902886021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Linda Ferris's specialty?
- Linda Ferris is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Linda Ferris located?
- Linda Ferris's practice location on file with NPPES is 4405 Weaver Pkwy, Warrenville, IL 60555-3269.
- What is Linda Ferris's phone number?
- The practice phone number listed in the NPPES registry for Linda Ferris is (630) 352-5450.
- Does Linda Ferris accept Medicare?
- Linda Ferris is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Linda Ferris's NPI active?
- Yes — Linda Ferris's NPI (1902886021) is active in the NPPES registry as of the last update on 2013-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.