NPPES file of Aug 9, 2026

Kimberly Ann Muczynski, MD-PHD

Nephrology Physician · Seattle, WA

Kimberly Ann Muczynski, MD-PHD is a nephrology physician with a practice address in Seattle, Washington, and NPI 1336249275, issued on Sep 22, 2006. Check the license (Washington 23701, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336249275
Name
Kimberly Ann Muczynski
Credential
MD-PHD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
23701 WA
Self-reported in NPPES; status is on the state search
Practice location
University OF Washington Medical Center, Seattle, WA 98195
Phone
(206) 598-6190
Enumerated
Sep 22, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100511000838); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 1984
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at University OF Washington Medical Center

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Manuel Ferreira, MD PHDNeurological Surgery Physician1164497202
  2. Jasdeep Gill, MDPsychiatry Physician1629574496
  3. Oliver McElvaney, MB BCH BAO MRCPI PHDCritical Care Medicine (Internal Medicine) Physician1235816224
  4. David Tretheway, MDAnatomic Pathology Physician1073606117

Verify Kimberly Ann Muczynski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license 23701
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

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45% fewer Medicare Part D claims than the average nephrology physician in 2024

807 Medicare Part D claims for 47 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Kimberly Muczynski807
  2. Specialty average1,465

Most prescribed

  1. Atorvastatin Calcium59 claims
  2. Pantoprazole Sodium53 claims
  3. Prednisone39 claims
  4. Amlodipine Besylate36 claims
  5. Gabapentin34 claims
  6. Lisinopril31 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 93.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. The Association OF University PhysiciansSeattle, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kimberly Ann Muczynski among 284 nephrology physician records in Washington

Kimberly Ann Muczynski, MD-PHD is one of 284 nephrology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 56% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1984 · median 2003 among the 213 with a school on file
  • Record last updated2007 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in Washington

There are 284 nephrology physician records in Washington.

The 8 nephrology physician records with the nearest ZIP codes

  1. Suhail AhmadSeattle, WA 981951821173659
  2. Adrianne Ball, MDSeattle, WA 981951033250949
  3. Nisha Bansal, M.D.Seattle, WA 981951801901210
  4. Alice Chang, M.D.Seattle, WA 981951366467698
  5. Ian De Boer, M.D.Seattle, WA 981951932146669
  6. Raghu DurvasulaSeattle, WA 981951679658470
  7. Jonathan JeffersonSeattle, WA 981951710062526
  8. Bryan KestenbaumSeattle, WA 981951790860500

Common questions

What is Kimberly Ann Muczynski, MD-PHD's NPI number?

Kimberly Ann Muczynski, MD-PHD's National Provider Identifier (NPI) is 1336249275, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Kimberly Ann Muczynski, MD-PHD located?

The NPPES record lists a practice address at University OF Washington Medical Center, Seattle, WA, 98195. Phone: (206) 598-6190. Providers update this record themselves, so call before visiting.

How can I verify Kimberly Ann Muczynski, MD-PHD's license?

NPPES lists Washington license number 23701, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kimberly Ann Muczynski, MD-PHD prescribe under Medicare Part D?

In 2024, Kimberly Ann Muczynski, MD-PHD had 807 Medicare Part D claims for 47 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

What is Kimberly Ann Muczynski, MD-PHD's MIPS final score?

The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.