Jonathan Katz, MD
NPI 1144806753 · Family Medicine Physician · Mequon, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Katz, MD is a Family Medicine Physician provider in Mequon, WI (NPI 1144806753).
Provider details
- NPI number
- 1144806753
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 83237 (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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
129 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 | 47 | $115 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 47 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $81 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 13 | $122 |
Typical Medicare-allowed amounts for these services range $15–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 48 | 23 |
| Gabapentin | 44 | 15 |
| Metformin Hcl | 31 | — |
| Lisinopril | 26 | 12 |
| Fluticasone Propionate | 24 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 | — |
| Bupropion Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 611 E Douglas Rd Ste 407Mishawaka, IN 46545-1468Phone: (574) 335-6500
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2024-11-18
- Certified
- 2024-11-18
Frequently asked questions
- What is Jonathan Katz's NPI number?
- Jonathan Katz's National Provider Identifier (NPI) is 1144806753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Katz's specialty?
- Jonathan Katz is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Katz located?
- Jonathan Katz's practice location on file with NPPES is 6425 W Mequon Rd, Mequon, WI 53092-1862.
- What is Jonathan Katz's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Katz is (262) 242-0051.
- Does Jonathan Katz accept Medicare?
- Jonathan Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Katz's NPI active?
- Yes — Jonathan Katz's NPI (1144806753) is active in the NPPES registry as of the last update on 2024-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.