Steven Siewert, MD
NPI 1861442931 · Family Medicine Physician · Cottage Grove, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Siewert, MD is a Family Medicine Physician provider in Cottage Grove, WI (NPI 1861442931).
Provider details
- NPI number
- 1861442931
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 39206 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,395 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 278 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 210 | $121 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 135 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 132 | $85 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 122 | $13 |
| Hemoglobin A1c Level83036 | 121 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 431 | 123 |
| Lisinopril | 274 | 69 |
| Simvastatin | 173 | 47 |
| Oxycodone Hcl | 147 | 15 |
| Levothyroxine Sodium | 146 | 31 |
| Metoprolol Succinate | 138 | 39 |
| Amlodipine Besylate | 136 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2020-11-02
- Certified
- 2020-11-02
Frequently asked questions
- What is Steven Siewert's NPI number?
- Steven Siewert's National Provider Identifier (NPI) is 1861442931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Siewert's specialty?
- Steven Siewert is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Siewert located?
- Steven Siewert's practice location on file with NPPES is 251 E Cottage Grove Rd, Cottage Grove, WI 53527-9619.
- What is Steven Siewert's phone number?
- The practice phone number listed in the NPPES registry for Steven Siewert is (608) 839-3515.
- Does Steven Siewert accept Medicare?
- Steven Siewert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Siewert's NPI active?
- Yes — Steven Siewert's NPI (1861442931) is active in the NPPES registry as of the last update on 2020-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.