Robert Schumaker, MD
NPI 1679573752 · Hematology & Oncology Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Schumaker, MD is a Hematology & Oncology Physician provider in Knoxville, TN (NPI 1679573752).
Provider details
- NPI number
- 1679573752
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36598 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
12,060 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,688 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,572 | $10 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,550 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 805 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 744 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 128 | 53 |
| Letrozole | 56 | 16 |
| Acyclovir | 42 | 15 |
| Ondansetron Hcl | 38 | 24 |
| Apixabanbrand: Eliquis | 37 | 15 |
| Prochlorperazine Maleate | 37 | 25 |
| Tamoxifen Citrate | 35 | 12 |
| Lenalidomidebrand: Revlimid |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,396 across 150 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-29
- Last updated
- 2025-04-21
- Certified
- 2025-04-21
Frequently asked questions
- What is Robert Schumaker's NPI number?
- Robert Schumaker's National Provider Identifier (NPI) is 1679573752, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Schumaker's specialty?
- Robert Schumaker is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Schumaker located?
- Robert Schumaker's practice location on file with NPPES is 1415 Old Weisgarber Rd Ste 200, Knoxville, TN 37909-1341.
- What is Robert Schumaker's phone number?
- The practice phone number listed in the NPPES registry for Robert Schumaker is (865) 934-5800.
- Does Robert Schumaker accept Medicare?
- Robert Schumaker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Schumaker's NPI active?
- Yes — Robert Schumaker's NPI (1679573752) is active in the NPPES registry as of the last update on 2025-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.