Thomas J. Waskiewicz, M.D.
Emergency Medicine Physician · Mission Hills, CA
Thomas J. Waskiewicz, M.D. is an emergency medicine physician with a practice address in Mission Hills, California, and NPI 1497768030, issued on Aug 14, 2006. Check the license (California A69143, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas J. Waskiewicz
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A69143 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15031 Rinaldi St, Mission Hills, CA 91345
- Phone
- (818) 365-8051
- Enumerated
- Aug 14, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 15031 Rinaldi St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marlyn Alejandro, P.T.Geriatric Physical Therapist1528265881
- Joanne Aquino, PA-CPhysician Assistant1740050012
- Brian Austin, PHARMDPharmacist1730022047
- Ali Azizi, M.D.Hospitalist Physician1225234529
- Lilit BazikyanFamily Nurse Practitioner1013840974
- Briana BegelferOccupational Therapist1174490205
Verify Thomas J. Waskiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% more Medicare Part D claims than the average emergency medicine physician in 2024
431 Medicare Part D claims for 292 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 69 claims were for opioids.
Most prescribed
- Prednisone48 claims
- Hydrocodone-Acetaminophen38 claims
- Ondansetron Odt33 claims
- Azithromycin27 claims
- Tramadol Hcl24 claims
- Ciprofloxacin Hcl22 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): 94.6 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).
Thomas J. Waskiewicz among 7,751 emergency medicine physician records in California
Thomas J. Waskiewicz, M.D. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2021 · 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).
9 emergency medicine physician records list a practice address in Mission Hills
They are 9 of the 731 NPPES records with a practice address in Mission Hills, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Mission Hills → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Chance Anderson, MDMission Hills, CA 913451902325467
- Jay Brown, M.D.Mission Hills, CA 913451376556183
- Bruce Cummings, D.O.Mission Hills, CA 913451407869225
- Charles Deng, M.D.Mission Hills, CA 913451407869233
- Robin Klein, D.O.Mission Hills, CA 913451538303292
- Sammy Shon, MDMission Hills, CA 913451548215023
- Alison Stewart, D.O.Mission Hills, CA 913451487735163
- Scott Wang, M.D.Mission Hills, CA 913451114930757
Common questions
What is Thomas J. Waskiewicz, M.D.'s NPI number?
Thomas J. Waskiewicz, M.D.'s National Provider Identifier (NPI) is 1497768030, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. Waskiewicz, M.D. located?
The NPPES record lists a practice address at 15031 Rinaldi St, Mission Hills, CA, 91345. Phone: (818) 365-8051. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. Waskiewicz, M.D.'s license?
NPPES lists California license number A69143, 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 Thomas J. Waskiewicz, M.D. prescribe under Medicare Part D?
In 2024, Thomas J. Waskiewicz, M.D. had 431 Medicare Part D claims for 292 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Thomas J. Waskiewicz, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 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.