Michael Sullivan, M.D.
NPI 1093883142 · Family Medicine Physician · Watertown, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Sullivan, M.D. is a Family Medicine Physician provider in Watertown, WI (NPI 1093883142).
Provider details
- NPI number
- 1093883142
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 46656 (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
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
1,716 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 | 487 | $121 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 204 | $122 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 173 | $100 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 143 | $85 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 110 | $69 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 172 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 850 | 198 |
| Levothyroxine Sodium | 443 | 99 |
| Amlodipine Besylate | 374 | 90 |
| Furosemide | 367 | 73 |
| Lisinopril | 365 | 81 |
| Losartan Potassium | 361 | 81 |
| Omeprazole | 350 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-30
- Last updated
- 2022-04-07
- Certified
- 2022-04-07
Frequently asked questions
- What is Michael Sullivan's NPI number?
- Michael Sullivan's National Provider Identifier (NPI) is 1093883142, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Sullivan's specialty?
- Michael Sullivan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Sullivan located?
- Michael Sullivan's practice location on file with NPPES is 127 Hospital Dr, Watertown, WI 53098-3303.
- What is Michael Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Michael Sullivan is (920) 261-8500.
- Does Michael Sullivan accept Medicare?
- Michael Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Sullivan's NPI active?
- Yes — Michael Sullivan's NPI (1093883142) is active in the NPPES registry as of the last update on 2022-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.