John Sanidas, M.D.
NPI 1356388359 · Internal Medicine Physician · Mequon, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sanidas, M.D. is a Internal Medicine Physician provider in Mequon, WI (NPI 1356388359).
Provider details
- NPI number
- 1356388359
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38112 (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
1,669 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 | 580 | $113 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 372 | $111 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 226 | $65 |
| Residence Visit for Established Patient With Straightforward Medical Decision Making, Per Day, If Using Time, at Least 15 Minutes99347 | 184 | $40 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 64 | $158 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 188 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,262 | 299 |
| Levothyroxine Sodium | 906 | 196 |
| Losartan Potassium | 682 | 159 |
| Amlodipine Besylate | 624 | 154 |
| Rosuvastatin Calcium | 491 | 119 |
| Trazodone Hcl | 391 | 88 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-31
- Last updated
- 2016-11-09
Frequently asked questions
- What is John Sanidas's NPI number?
- John Sanidas's National Provider Identifier (NPI) is 1356388359, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sanidas's specialty?
- John Sanidas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Sanidas located?
- John Sanidas's practice location on file with NPPES is 13133 N Port Washington Rd, Mequon, WI 53097-2419.
- What is John Sanidas's phone number?
- The practice phone number listed in the NPPES registry for John Sanidas is (262) 243-5000.
- Does John Sanidas accept Medicare?
- John Sanidas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sanidas's NPI active?
- Yes — John Sanidas's NPI (1356388359) is active in the NPPES registry as of the last update on 2016-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.