William Donnellan, M.D.
NPI 1396906657 · Hematology & Oncology Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Donnellan, M.D. is a Hematology & Oncology Physician provider in Nashville, TN (NPI 1396906657).
Provider details
- NPI number
- 1396906657
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 51027 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
16,947 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 | 2,574 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 2,098 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 2,025 | $10 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 770 | $164 |
| Gammaglobulin (immune System Protein) Measurement82784 | 663 | $9 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 549 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 252 | 66 |
| Acyclovir | 187 | 38 |
| Prednisone | 129 | 42 |
| Lenalidomidebrand: Revlimid | 116 | 16 |
| Dexamethasone | 77 | 27 |
| Ondansetronbrand: Ondansetron Odt | 76 | 57 |
| Potassium Chloride | 75 | 18 |
| Apixaban |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,464 across 21 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
- 2008-06-19
- Last updated
- 2014-08-07
Frequently asked questions
- What is William Donnellan's NPI number?
- William Donnellan's National Provider Identifier (NPI) is 1396906657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Donnellan's specialty?
- William Donnellan is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William Donnellan located?
- William Donnellan's practice location on file with NPPES is 250 25th Ave N, Nashville, TN 37203-1632.
- What is William Donnellan's phone number?
- The practice phone number listed in the NPPES registry for William Donnellan is (615) 986-7600.
- Does William Donnellan accept Medicare?
- William Donnellan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Donnellan's NPI active?
- Yes — William Donnellan's NPI (1396906657) is active in the NPPES registry as of the last update on 2014-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.