Namieta M. Janssen, MD

Medicare activity in 2024

Official CMS public-use data for Namieta M. Janssen, 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.

Most frequent services

1. Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)163,600 services
2. Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)11,000 services
3. Injection, denosumab, 1 mg (J0897)1,500 services
4. Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle (96401)830 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)325 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 cholesterol75%
• Arthritis75%
• High blood pressure73%
• Osteoporosis37%
• Ischemic heart disease28%
• Diabetes27%

Hospitals where Namieta M. Janssen works

Medicare's Facility Affiliation Data lists Namieta M. Janssen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Houston Methodist Sugar Land HospitalSugar Land, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450820
• Memorial Hermann Sugar Land HospitalSugar Land, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450848
• St. Luke's Sugar Land HospitalSugar Land, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · CCN 670053

Practice locations

Addresses where Namieta M. Janssen is enrolled with Medicare (CMS data updated October 2, 2026).

• 1327 Lake Pointe Pkwy, Suite 535Sugar Land, TX 77478 (832) 500‑5002

Group practices

Medicare enrollment lists Namieta M. Janssen as a member of this group (CMS data updated October 2, 2026).

• Namieta M. Janssen MD PLLC2 clinicians in the group

Specialties

• Rheumatologyprimary
• Internal Medicinealso

Find other Rheumatology doctors in Texas →

Other rheumatologists in Sugar Land

Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.

• Myriam E. Guevara, MD
• Grace A. Makhlouf, MD
• Richard A. Rubin, MD
• Padma R. Chimata, MD
• Leila Muhieddine, MD
• Anam A. Shaikh, DO
• Quratul A. Raja, MD
• Latifa A. Fakoya, DO

All rheumatologists in Sugar Land →

Other clinicians in Namieta M. Janssen MD PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Leila Muhieddine, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians