Namieta Janssen, M.D.
NPI 1609979947 · Rheumatology Physician · Sugar Land, TX
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Namieta Janssen, M.D. is a Rheumatology Physician provider in Sugar Land, TX (NPI 1609979947).
Provider details
- NPI number
- 1609979947
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- H7619 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,293 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 830 | $67 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 325 | $122 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 317 | $8 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 278 | $121 |
| 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 | 169 | $16 |
| Administration of Chemotherapy Into Vein, Each Additional Hour |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 249 | 68 |
| Prednisone | 179 | 59 |
| Hydroxychloroquine Sulfate | 163 | 52 |
| Celecoxib | 36 | 12 |
| Adalimumabbrand: Humira(cf) Pen | 31 | — |
| Leflunomide | 27 | — |
| Sulfasalazine | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,508 across 77 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-05
- Last updated
- 2025-03-25
- Certified
- 2025-03-25
Frequently asked questions
- What is Namieta Janssen's NPI number?
- Namieta Janssen's National Provider Identifier (NPI) is 1609979947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Namieta Janssen's specialty?
- Namieta Janssen is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Namieta Janssen located?
- Namieta Janssen's practice location on file with NPPES is 1327 Lake Pointe Pkwy Ste 325, Sugar Land, TX 77478-4097.
- What is Namieta Janssen's phone number?
- The practice phone number listed in the NPPES registry for Namieta Janssen is (832) 500-5002.
- Does Namieta Janssen accept Medicare?
- Namieta Janssen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Namieta Janssen's NPI active?
- Yes — Namieta Janssen's NPI (1609979947) is active in the NPPES registry as of the last update on 2025-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.