Lynda Siewert, MD
NPI 1225087893 · Family Medicine Physician · Cottage Grove, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynda Siewert, MD is a Family Medicine Physician provider in Cottage Grove, WI (NPI 1225087893).
Provider details
- NPI number
- 1225087893
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 37051 (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
724 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 | 148 | $120 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 115 | $9 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 64 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 51 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 37 | $85 |
| Screening 3d Breast Mammography77063 | 32 | $22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Simvastatin | 179 | 40 |
| Levothyroxine Sodium | 119 | 26 |
| Omeprazole | 113 | 25 |
| Amlodipine Besylate | 104 | 22 |
| Atorvastatin Calcium | 97 | 22 |
| Warfarin Sodium | 95 | — |
| Trazodone Hcl | 82 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-09
- Last updated
- 2020-11-02
- Certified
- 2020-11-02
Frequently asked questions
- What is Lynda Siewert's NPI number?
- Lynda Siewert's National Provider Identifier (NPI) is 1225087893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynda Siewert's specialty?
- Lynda Siewert is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lynda Siewert located?
- Lynda Siewert's practice location on file with NPPES is 251 E Cottage Grove Rd, Cottage Grove, WI 53527-9619.
- What is Lynda Siewert's phone number?
- The practice phone number listed in the NPPES registry for Lynda Siewert is (608) 839-3515.
- Does Lynda Siewert accept Medicare?
- Lynda Siewert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynda Siewert's NPI active?
- Yes — Lynda Siewert's NPI (1225087893) 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.