Joseph Primo Mazzoncini, M.D.
Emergency Medicine Physician · Everett, WA
Joseph Primo Mazzoncini, M.D. is an emergency medicine physician with a practice address in Everett, Washington, and NPI 1023169604, issued on Jan 12, 2007. Check the license (Washington MD60248557, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Joseph Primo Mazzoncini
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD60248557 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1700 13TH St, Everett, WA 98201
- Phone
- (425) 261-2000
- Enumerated
- Jan 12, 2007
- Record last updated
- May 9, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120806000209); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,459 in Washington → Look up another NPI →
Also registered at 1700 13TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Henry Ackerman, MDEmergency Medicine Physician1649965682
- Dian Acosta, CNANurse's Aide1669251849
- Michael Adams, PHARMDPharmacist1205676541
- Sojung Ahn, PHARMDPharmacist1003632993
- Amy Anderson, ARNPEmergency Medical Services (Emergency Medicine) Physician1982458030
- Lisa Azzara, CRNACertified Registered Nurse Anesthetist1770107799
Verify Joseph Primo Mazzoncini in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60248557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average emergency medicine physician in 2024
153 Medicare Part D claims for 103 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Oxycodone Hcl25 claims
- Ondansetron Hcl14 claims
- Cephalexin12 claims
- Ibuprofen12 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.
Bills Medicare through one group practice
- Evergreen Emergency Services PSKirkland, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Primo Mazzoncini among 1,459 emergency medicine physician records in Washington
Joseph Primo Mazzoncini, M.D. is one of 1,459 emergency medicine physician records with a practice address in Washington. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2010 among the 851 with a school on file
- Record last updated2014 · 62% 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 Washington 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 Washington
There are 1,459 emergency medicine physician records in Washington.
All 1,459 in Washington → Every provider in Everett → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jody Bockrath, MDEverett, WA 982011336125715
- Bruce Buchea, DOEverett, WA 982011609828631
- Todd Denkinger, MDEverett, WA 982011689654212
- Dominic Diciro, MDEverett, WA 982011376596981
- Sara-Jo Gahm, MDEverett, WA 982011750333787
- James Goldberg, MDEverett, WA 982011013974328
- Sarah Hansen, MDEverett, WA 982011619921970
- Robert Iguchi, MDEverett, WA 982011265484273
Common questions
What is Joseph Primo Mazzoncini, M.D.'s NPI number?
Joseph Primo Mazzoncini, M.D.'s National Provider Identifier (NPI) is 1023169604, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Primo Mazzoncini, M.D. located?
The NPPES record lists a practice address at 1700 13TH St, Everett, WA, 98201. Phone: (425) 261-2000. Providers update this record themselves, so call before visiting.
How can I verify Joseph Primo Mazzoncini, M.D.'s license?
NPPES lists Washington license number MD60248557, 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 Joseph Primo Mazzoncini, M.D. prescribe under Medicare Part D?
In 2024, Joseph Primo Mazzoncini, M.D. had 153 Medicare Part D claims for 103 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.