Daniel Wientzen, DO
NPI 1952417248 · Family Medicine Physician · Decorah, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Wientzen, DO is a Family Medicine Physician provider in Decorah, IA (NPI 1952417248).
Provider details
- NPI number
- 1952417248
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- DO-R-8208 (IA)
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 tenure28% of score
19 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
3,861 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 596 | $123 |
| 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 | 379 | $16 |
| Blood Test, Clotting Time85610 | 364 | $4 |
| Blood Creatinine Level82565 | 264 | $5 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 242 | $128 |
| Blood Potassium Level84132 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 633 | 142 |
| Omeprazole | 326 | 70 |
| Amlodipine Besylate | 292 | 74 |
| Levothyroxine Sodium | 288 | 50 |
| Losartan Potassium | 278 | 63 |
| Metoprolol Succinate | 269 | 62 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2015-11-18
Frequently asked questions
- What is Daniel Wientzen's NPI number?
- Daniel Wientzen's National Provider Identifier (NPI) is 1952417248, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Wientzen's specialty?
- Daniel Wientzen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Wientzen located?
- Daniel Wientzen's practice location on file with NPPES is 1830 State Highway 9, Decorah, IA 52101-7301.
- What is Daniel Wientzen's phone number?
- The practice phone number listed in the NPPES registry for Daniel Wientzen is (563) 382-3140.
- Does Daniel Wientzen accept Medicare?
- Daniel Wientzen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Wientzen's NPI active?
- Yes — Daniel Wientzen's NPI (1952417248) is active in the NPPES registry as of the last update on 2015-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.