2026 NPPES data Urology Physician NPI 1477940518 M.D.
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NATASZA POSIELSKI, M.D.

Urology Physician in TACOMA, Washington. 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
455
Medicare Part D claims · 150 beneficiaries · Urology Physician avg: 1K
What the federal data reveals: NATASZA POSIELSKI, M.D. is a Urology Physician ([object Object]) practicing in TACOMA, Washington with a Medicare Part D prescribing footprint of 455 claims across 150 beneficiaries .

What stands out: NATASZA POSIELSKI, M.D. filed 455 Medicare Part D claims in 2023 across TACOMA, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

NATASZA POSIELSKI, 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).

NATASZA POSIELSKI, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/15/2015

NPI 1477940518

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

455 64% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

Specialty distribution in Washington

How Urology Physician compares to other specialties among Washington providers

Washington providers

Urology Physician share within Washington

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Urology 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).

NATASZA POSIELSKI, M.D. is a Urology Physician provider practicing in TACOMA, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1477940518. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

NATASZA POSIELSKI, M.D. appears in the CMS NPPES registry as a Urology Physician provider holding M.D. credentials at 209 MARTIN LUTHER KING JR WAY, TACOMA, WA, 98405, with a listed phone of (253) 596-3300. NPI 1477940518 was issued on 04/15/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what POSIELSKI 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 455 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $8K in drug spend, with an opioid prescribing rate of 10.1%. 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.

Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 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

209 MARTIN LUTHER KING JR WAY
TACOMA, WA 98405

Provider Details

NPI 1477940518
Specialty Urology Physician
Credentials M.D.
Gender Female
NPI Issued 04/15/2015

Hospital and facility affiliations

Facilities where NATASZA POSIELSKI, 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.

KAISER FOUNDATION HEALTH PLAN OF WASHINGTON
TACOMA, WA

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

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to NATASZA POSIELSKI, M.D.. To verify NATASZA POSIELSKI, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington 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.

455
Total Claims
$8K
Total Drug Cost
150
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
655
Total Day Supply
14,663
Generic Drug Cost
$7K
Opioid Claims
46 (10.1% rate)
Antibiotic Claims
125

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.11
Gender Split
21% female / 79% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Tamsulosin Hcl
108
Ciprofloxacin Hcl
56
Cephalexin
46
Oxycodone Hcl
46
Solifenacin Succinate
24
Gabapentin
23
Estradiol
18
Oxybutynin Chloride
16
Finasteride
15
Trospium Chloride
14

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

Urology Physician Overview

How NATASZA POSIELSKI, M.D. fits within the Urology Physician landscape nationally.

13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider

NATASZA POSIELSKI, M.D.'s 455 claims are below the specialty average of 1,280.

Nearby Urology Physician Providers in Washington

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

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

Frequently Asked Questions

What is NATASZA POSIELSKI, M.D.'s specialty?
NATASZA POSIELSKI, M.D. specializes in Urology Physician and practices in TACOMA, Washington. Credentials: M.D..
How much does NATASZA POSIELSKI, M.D. prescribe under Medicare Part D?
In 2023, NATASZA POSIELSKI, M.D. wrote 455 Medicare Part D claims totaling $8K in drug costs for 150 beneficiaries.
Where is NATASZA POSIELSKI, M.D. located?
NATASZA POSIELSKI, M.D. is located at 209 MARTIN LUTHER KING JR WAY, TACOMA, WA, 98405. Phone: (253) 596-3300.
What is NATASZA POSIELSKI, M.D.'s NPI number?
NATASZA POSIELSKI, M.D.'s National Provider Identifier (NPI) is 1477940518, issued on 04/15/2015.
Does NATASZA POSIELSKI, M.D. prescribe opioids?
Yes, NATASZA POSIELSKI, M.D. had 46 opioid claims in 2023 with an opioid prescribing rate of 10.1%.
How many Urology Physician providers are there in the US?
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does NATASZA POSIELSKI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NATASZA POSIELSKI, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Ciprofloxacin Hcl, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NATASZA POSIELSKI, M.D. accept Medicare?
NATASZA POSIELSKI, M.D. appears in CMS Medicare data with 455 Part D claims and 150 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NATASZA POSIELSKI, M.D.'s credentials?
NATASZA POSIELSKI, M.D.'s NPI is 1477940518 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