NPPES file of Aug 9, 2026

John A. Muraski, MD PHD

Emergency Medicine Physician · Clearlake, CA

John A. Muraski, MD PHD is an emergency medicine physician with a practice address in Clearlake, California, and NPI 1083242358, issued on Mar 31, 2020. Check the license (California A178070, as entered in NPPES) on the Medical Board of California; 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
1083242358
Name
John A. Muraski
Credential
MD PHD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A178070 CA
Self-reported in NPPES; status is on the state search
Practice location
15630 18TH Ave, Clearlake, CA 95422
Phone
(707) 994-6486
Enumerated
Mar 31, 2020
Record last updated
Mar 29, 2024
Medicare enrollment
Enrolled (PECOS I20220927003290); accepts Medicare assignment
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 15630 18TH Ave

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

  1. John ClarkeAnesthesiology Physician1053329359
  2. Martina Cordova, FNPFamily Nurse Practitioner1114793643
  3. Laurie Halversen, LCSWClinical Social Worker1356649545
  4. Stephenie Hargrove, NPFamily Nurse Practitioner1053927608
  5. John Hewitt, MDEmergency Medicine Physician1902840176
  6. Thomas Kreck, MDCritical Care Medicine (Internal Medicine) Physician1457439200

Verify John A. Muraski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A178070
    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 California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.3 times the Medicare Part D claims of the average emergency medicine physician in 2024

530 Medicare Part D claims for 257 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 14 claims were for opioids.

  1. John Muraski530
  2. Specialty average226

Most prescribed

  1. Sulfamethoxazole-Trimethoprim54 claims
  2. Prednisone49 claims
  3. Albuterol Sulfate Hfa40 claims
  4. Amoxicillin-Clavulanate Potass39 claims
  5. Cephalexin35 claims
  6. Doxycycline Hyclate31 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 practice group's MIPS final score for 2023 (Medicare payment program): 94.7 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score87.9
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Bills Medicare through 2 group practices

  1. Pacific Redwood Medical Group IncUkiah, CA
  2. Trinity Emergency PhysiciansStockton, CA

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

John A. Muraski among 7,751 emergency medicine physician records in California

John A. Muraski, MD PHD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.

  • NPI issued2020 · 88% of these records are older, 8% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2020 · median 2011 among the 4,560 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. John Hewitt, MDClearlake, CA 954221902840176
  2. Linnea Lantz, DOClearlake, CA 954221841759974
  3. Constance Dougherty, MDSanta Rosa, CA 954091184173239
  4. Barbara Kilian, MDFort Bragg, CA 954371306869342
  5. Patrick Lenaghan, M.D.Fort Bragg, CA 954371770819641
  6. Tamaki Myers, MDFort Bragg, CA 954371477641686
  7. Richard Reid, MDFort Bragg, CA 954371821104563
  8. Johnathan Agil, MDSanta Rosa, CA 954051700413002

Common questions

What is John A. Muraski, MD PHD's NPI number?

John A. Muraski, MD PHD's National Provider Identifier (NPI) is 1083242358, issued on Mar 31, 2020. An NPI identifies a provider in billing; it is not a license.

Where is John A. Muraski, MD PHD located?

The NPPES record lists a practice address at 15630 18TH Ave, Clearlake, CA, 95422. Phone: (707) 994-6486. Providers update this record themselves, so call before visiting.

How can I verify John A. Muraski, MD PHD's license?

NPPES lists California license number A178070, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does John A. Muraski, MD PHD prescribe under Medicare Part D?

In 2024, John A. Muraski, MD PHD had 530 Medicare Part D claims for 257 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is John A. Muraski, MD PHD's MIPS final score?

The 2023 MIPS final score is 94.7 of 100, reported for the practice group. 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.