Quick answers
- Does Stephen Z. Fadem accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen Z. Fadem accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Stephen Z. Fadem see?
- In 2024, CMS data shows 106 Original Medicare patients and 1,458 services for Stephen Z. Fadem. This counts Original Medicare only and measures volume, not quality.
- What is Stephen Z. Fadem's NPI number?
- 1144224163. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Stephen Z. Fadem, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 106 |
|---|---|
| Services billed to Medicare | 1,458 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)431 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)281 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)196 services
- Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)182 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease75%
- Diabetes58%
- Ischemic heart disease51%
- Arthritis37%
Practice locations
Addresses where Stephen Z. Fadem is enrolled with Medicare (CMS data updated October 2, 2026).
- 1631 N Loop W, Suite 640Houston, TX 77008 (713) 691‑0107
- 6560 Fannin St, Suite 1730Houston, TX 77030 (713) 795‑5511
Group practices
Medicare enrollment lists Stephen Z. Fadem as a member of this group (CMS data updated October 2, 2026).
- Kidney Associates, PLLC8 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Kidney Associates, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 1973 (53 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144224163 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians