Charles Zachem, D.O.
NPI 1407851942 · Specialist · Eugene, OR
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Zachem, D.O. is a Specialist provider in Eugene, OR (NPI 1407851942).
Provider details
- NPI number
- 1407851942
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- D.O.
- Sex
- Male
- License
- DO20422 (OR)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
2,479 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 469 | $16 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 414 | $47 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 359 | $38 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 296 | $126 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 275 | $46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 411 | 92 |
| Losartan Potassium | 147 | 46 |
| Amlodipine Besylate | 147 | 50 |
| Carvedilol | 129 | 37 |
| Furosemide | 88 | 34 |
| Spironolact/Hydrochlorothiazidbrand: Spironolactone-Hctz | 81 | 24 |
| Lisinopril | 74 | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$123 across 2 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
- 2005-06-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Charles Zachem's NPI number?
- Charles Zachem's National Provider Identifier (NPI) is 1407851942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Zachem's specialty?
- Charles Zachem is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Charles Zachem located?
- Charles Zachem's practice location on file with NPPES is 1200 Hilyard St, Eugene, OR 97401-8107.
- What is Charles Zachem's phone number?
- The practice phone number listed in the NPPES registry for Charles Zachem is (541) 485-6478.
- Does Charles Zachem accept Medicare?
- Charles Zachem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Zachem's NPI active?
- Yes — Charles Zachem's NPI (1407851942) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.