David Zimmerman, M.D.
NPI 1639148232 · Hematology & Oncology Physician · Fort Wayne, IN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1639148232
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01050092A (IN)
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
2,771 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 698 | $118 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 372 | $14 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 236 | $115 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 222 | $84 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 126 | $26 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 126 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 148 | 39 |
| Apixabanbrand: Eliquis | 113 | 26 |
| Acyclovir | 94 | 23 |
| Ondansetronbrand: Ondansetron Odt | 78 | 33 |
| Hydroxyurea | 76 | 20 |
| Dexamethasone | 68 | 31 |
| Prednisone | 67 | 28 |
| Letrozole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,810 across 107 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
- 2006-03-16
- Last updated
- 2025-05-15
- Certified
- 2025-05-15
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.