Yoshito Kosai, MD
NPI 1346637857 · Family Medicine Physician · Madison, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yoshito Kosai, MD is a Family Medicine Physician provider in Madison, WI (NPI 1346637857).
Provider details
- NPI number
- 1346637857
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 67024 (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
11 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
257 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 | 111 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 40 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $169 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $85 |
| Face-To-Face Behavioral Counseling for Obesity, 15 MinutesG0447 | 27 | $24 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hclbrand: Metformin Hcl Er | 65 | 16 |
| Topiramate | 64 | 18 |
| Semaglutidebrand: Ozempic | 29 | — |
| Tirzepatidebrand: Mounjaro | 25 | — |
| Bupropion Hclbrand: Bupropion Xl | 20 | — |
| Dulaglutidebrand: Trulicity | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-22
- Last updated
- 2023-06-27
- Certified
- 2023-06-27
Frequently asked questions
- What is Yoshito Kosai's NPI number?
- Yoshito Kosai's National Provider Identifier (NPI) is 1346637857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yoshito Kosai's specialty?
- Yoshito Kosai is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Yoshito Kosai located?
- Yoshito Kosai's practice location on file with NPPES is 1821 S Stoughton Rd, Madison, WI 53716-2257.
- What is Yoshito Kosai's phone number?
- The practice phone number listed in the NPPES registry for Yoshito Kosai is (608) 260-6000.
- Does Yoshito Kosai accept Medicare?
- Yoshito Kosai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yoshito Kosai's NPI active?
- Yes — Yoshito Kosai's NPI (1346637857) is active in the NPPES registry as of the last update on 2023-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.