Joshua Katz, M.D.
NPI 1912355918 · Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joshua Katz, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Chicago, IL (NPI 1912355918).
Provider details
- NPI number
- 1912355918
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036.148567 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
106 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 54 | $81 |
| 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 | 29 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 23 | $100 |
Typical Medicare-allowed amounts for these services range $17–$100 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 40 |
| Atorvastatin Calcium | 27 |
| Dulaglutidebrand: Trulicity | 20 |
| Tirzepatidebrand: Mounjaro | 18 |
| Empagliflozinbrand: Jardiance | 15 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 14 |
| Methimazole | 13 |
| Metformin Hcl | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-31
- Last updated
- 2022-07-13
- Certified
- 2022-07-13
Frequently asked questions
- What is Joshua Katz's NPI number?
- Joshua Katz's National Provider Identifier (NPI) is 1912355918, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joshua Katz's specialty?
- Joshua Katz is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Joshua Katz located?
- Joshua Katz's practice location on file with NPPES is 1801 W Taylor St # 1c, Chicago, IL 60612-4795.
- What is Joshua Katz's phone number?
- The practice phone number listed in the NPPES registry for Joshua Katz is (866) 600-2273.
- Does Joshua Katz accept Medicare?
- Joshua Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joshua Katz's NPI active?
- Yes — Joshua Katz's NPI (1912355918) is active in the NPPES registry as of the last update on 2022-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.