2026 NPPES data Rheumatology Physician NPI 1609979947 M.D.
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NAMIETA JANSSEN, M.D.

Rheumatology Physician in SUGAR LAND, Texas. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
973
Medicare Part D claims · 184 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$4.5K
77 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

NAMIETA JANSSEN, M.D. filed 973 Medicare Part D claims in 2023 as a Rheumatology Physician in SUGAR LAND, Texas.

973
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

NAMIETA JANSSEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

973 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

NAMIETA JANSSEN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about NAMIETA JANSSEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/05/2006

NPI 1609979947

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

973 53% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Texas

How Rheumatology Physician compares to other specialties among Texas providers

Texas providers

Rheumatology Physician share within Texas

1. Rheumatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Rheumatology Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Rheumatology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Rheumatology Physician ABMS/AOA estimate

Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Rheumatology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

NAMIETA JANSSEN, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 1327 LAKE POINTE PKWY STE 325, SUGAR LAND, TX, 77478, with a listed phone of (832) 500-5002. NPI 1609979947 was issued on 09/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JANSSEN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 973 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $363K in drug spend, with an opioid prescribing rate of 2.8%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1327 LAKE POINTE PKWY STE 325
SUGAR LAND, TX 77478

Provider Details

NPI 1609979947
Specialty Rheumatology Physician
Credentials M.D.
Gender Female
NPI Issued 09/05/2006

Hospital and facility affiliations

Facilities where NAMIETA JANSSEN, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

NAMIETA M. JANSSEN MD PLLC
SUGAR LAND, TX

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for NAMIETA JANSSEN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$4.5K

Largest payer

GlaxoSmithKline, LLC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Texas TMB 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 — they are NOT specific to NAMIETA JANSSEN, M.D.. To verify NAMIETA JANSSEN, M.D.'s current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

973
Total Claims
$363K
Total Drug Cost
184
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,945
Total Day Supply
56,812
Generic Drug Cost
$37K
Opioid Claims
27 (2.8% rate)

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.30
Gender Split
74% female / 26% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What NAMIETA JANSSEN, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Methotrexate
Methotrexate Sodium
292
Hydroxychloroquine Sulfate
149
Prednisone
136
Celecoxib
33
Folic Acid
31
Leflunomide
29
Duloxetine Hcl
28
Sulfasalazine
26
Gabapentin
21
Mycophenolate Mofetil
21

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Rheumatology Physician Overview

How NAMIETA JANSSEN, M.D. fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

NAMIETA JANSSEN, M.D.'s 973 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Texas

Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as JANSSEN.

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NAMIETA JANSSEN, M.D.'s specialty?
NAMIETA JANSSEN, M.D. specializes in Rheumatology Physician and practices in SUGAR LAND, Texas. Credentials: M.D..
How much does NAMIETA JANSSEN, M.D. prescribe under Medicare Part D?
In 2023, NAMIETA JANSSEN, M.D. wrote 973 Medicare Part D claims totaling $363K in drug costs for 184 beneficiaries.
Where is NAMIETA JANSSEN, M.D. located?
NAMIETA JANSSEN, M.D. is located at 1327 LAKE POINTE PKWY STE 325, SUGAR LAND, TX, 77478. Phone: (832) 500-5002.
What is NAMIETA JANSSEN, M.D.'s NPI number?
NAMIETA JANSSEN, M.D.'s National Provider Identifier (NPI) is 1609979947, issued on 09/05/2006.
Does NAMIETA JANSSEN, M.D. prescribe opioids?
Yes, NAMIETA JANSSEN, M.D. had 27 opioid claims in 2023 with an opioid prescribing rate of 2.8%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does NAMIETA JANSSEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NAMIETA JANSSEN, M.D.'s most frequently prescribed drugs include Methotrexate, Hydroxychloroquine Sulfate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NAMIETA JANSSEN, M.D. accept Medicare?
NAMIETA JANSSEN, M.D. appears in CMS Medicare data with 973 Part D claims and 184 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NAMIETA JANSSEN, M.D.'s credentials?
NAMIETA JANSSEN, M.D.'s NPI is 1609979947 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology