Jay W. Krzewinski, M.D.
Internal Medicine Physician · Roseville, CA
Jay W. Krzewinski, M.D. is an internal medicine physician with a practice address in Roseville, California, and NPI 1902835317, issued on Jun 30, 2006. Check the license (California C147049, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jay W. Krzewinski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C147049 CA
4301087338 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1 Medical Plaza Dr, Roseville, CA 95661
- Phone
- (916) 781-1927
- Enumerated
- Jun 30, 2006
- Record last updated
- May 12, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid IDs
- 4952579 MI
4859912 MI - Medicare enrollment
- Enrolled (PECOS I20060425000260); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2002
- Entity
- Type 1 · individual
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Verify Jay W. Krzewinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C147049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
119 Medicare Part D claims for 56 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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): 85.8 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Promedica Monroe Physicians PLLCMonroe, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jay W. Krzewinski among 17,696 internal medicine physician records in California
Jay W. Krzewinski, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
157 internal medicine physician records list a practice address in Roseville
They are 157 of the 5,340 NPPES records with a practice address in Roseville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Roseville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Afshin Arya, M.D.Roseville, CA 956611548230287
- Jagdeep Bal, M.D.Roseville, CA 956611548252703
- Harinder Bisla, MDRoseville, CA 956611174512685
- Kenneth Michael Conroy, MDRoseville, CA 956611134108285
- Barbara Febbo-Wilson, M.D.Roseville, CA 956611154307700
- Baljinder Gill, MDRoseville, CA 956611790774784
- Devamani Gowda, MDRoseville, CA 956611962463455
- Thomas Hopkins, MDRoseville, CA 956611720045206
Common questions
What is Jay W. Krzewinski, M.D.'s NPI number?
Jay W. Krzewinski, M.D.'s National Provider Identifier (NPI) is 1902835317, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jay W. Krzewinski, M.D. located?
The NPPES record lists a practice address at 1 Medical Plaza Dr, Roseville, CA, 95661. Phone: (916) 781-1927. Providers update this record themselves, so call before visiting.
How can I verify Jay W. Krzewinski, M.D.'s license?
NPPES lists California license number C147049, 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 Jay W. Krzewinski, M.D. prescribe under Medicare Part D?
In 2024, Jay W. Krzewinski, M.D. had 119 Medicare Part D claims for 56 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Jay W. Krzewinski, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.8 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.