Dr. Joseph Primo Mazzoncini Jr., MD
- Medicare services, 2024
- 360
- Medicare patients, 2024
- 248
- Part D claims, 2024
- 153
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 12040 Ne 128th St, Kirkland, WA 98034
- Practice phone
- Call (425) 899-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
EvergreenHealth Medical Center Kirkland
Kirkland, Washington
Find Dr. Mazzoncini's professional email, personal email and mobile number
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Dr. Joseph Primo Mazzoncini Jr. is an emergency medicine physician in Kirkland, Washington
Dr. Mazzoncini practices at EvergreenHealth Medical Center Kirkland in Kirkland, Washington.
Dr. Mazzoncini's NPI, 1023169604, was assigned on January 12, 2007. Dr. Mazzoncini graduated from University of Washington School of Medicine in 2005. Dr. Mazzoncini holds Washington license MD60248557.
- NPI
- 1023169604NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921277179
- NPI enumeration date
- January 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 899-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph Primo Mazzoncini Jr. practices at EvergreenHealth Medical Center Kirkland in Kirkland, Washington
Dr. Mazzoncini's primary practice is EvergreenHealth Medical Center Kirkland, at 12040 Ne 128th St, Kirkland, WA 98034 in King County. The practice phone is (425) 899-1000.
- EvergreenHealth Medical Center Kirkland12040 Ne 128th St, Kirkland, WA 98034 · King CountyPhone(425) 899-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joseph Primo Mazzoncini Jr. is affiliated with 4 sites of care and 2 medical groups
Dr. Mazzoncini's primary practice is EvergreenHealth Medical Center Kirkland in Kirkland, Washington. Dr. Mazzoncini is also affiliated with EvergreenHealth Medical Center. The medical group on file is Evergreen Emergency Services. Dmand AI also links Dr. Mazzoncini to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph Primo Mazzoncini Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazzoncini practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| EvergreenHealth Medical Center Kirkland | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joseph Primo Mazzoncini Jr. is one of 1,408 emergency medicine physicians in Washington
Emergency medicine is Dr. Mazzoncini's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Mazzoncini is licensed in Washington.
Specialties and state licenses
- Emergency medicine, WashingtonPrimary
Emergency medicine physicians near Dr. Mazzoncini
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joseph Primo Mazzoncini Jr. billed Medicare for 360 services in 2024
CMS data shows 360 Medicare services from Dr. Mazzoncini across 4 procedure codes in 2024, for 248 Medicare patients. Medicare paid $33,167 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mazzoncini's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2792024: 24413%
- Tests and treatments
- 2023: 1102024: 1165%
Dr. Mazzoncini compared with the Washington median for emergency medicine physicians, 2024
- Dr. Mazzoncini
- Washington median
- Medicare services
- 360vs 26834% above
- Medicare patients
- 248vs 22311% above
- Part D claims
- 63vs 61Close to median
Medians across 1,440 emergency medicine physicians in Washington with Dmand AI profiles that report each measure.
Dr. Mazzoncini's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph Primo Mazzoncini Jr. treated 248 Medicare patients in 2024, average age 76
CMS counts 248 Medicare patients who saw Dr. Mazzoncini in 2024. The largest group is 75 to 84, with 80 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mazzoncini's median patient age at 46, with 56% women.
Dr. Mazzoncini's Medicare patients by age, 2024
Dr. Mazzoncini's Medicare patients by sex, 2024
- Women13454%
- Men11446%
Chronic conditions among Dr. Mazzoncini's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis52%
- Ischemic heart disease40%
- Atrial fibrillation38%
- Chronic kidney disease38%
- Diabetes38%
- Anxiety37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mazzoncini's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph Primo Mazzoncini Jr. wrote 153 Medicare Part D claims in 2024
In 2024, Dr. Mazzoncini wrote 153 Medicare Part D claims for 103 patients. 95% of them were for generic drugs. CMS names the drug for 63 of them, across 4 drugs with 11 or more claims each, at $375 in total drug cost. In 2023, CMS named 18 claims across 1 drug.
Dr. Mazzoncini's Part D claims by kind of drug, 2024
- Generic146 claims95%
- Brand-name and other7 claims5%
Dr. Mazzoncini's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mazzoncini's Part D claims, 2024
- Opioids17%26 of 153 claims
- Antibiotics32%49 of 153 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 182024: 63250%
Drugs named by CMS: 4 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Joseph Primo Mazzoncini Jr. takes part in Medicare
Dr. Mazzoncini accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Joseph Primo Mazzoncini Jr. graduated from University of Washington School of Medicine
Dr. Mazzoncini graduated from University of Washington School of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph Primo Mazzoncini Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Joseph Primo Mazzoncini Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Joseph Primo Mazzoncini Jr.'s NPI number?
Dr. Joseph Primo Mazzoncini Jr.'s NPI number is 1023169604. It was assigned on January 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph Primo Mazzoncini Jr.?
Dr. Joseph Primo Mazzoncini Jr. is an emergency medicine physician in Kirkland, Washington. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Joseph Primo Mazzoncini Jr. practice?
Dr. Mazzoncini practices at 12040 Ne 128th St, Kirkland, WA 98034. Dr. Mazzoncini's primary practice is EvergreenHealth Medical Center Kirkland in Kirkland, Washington. Dmand AI also links Dr. Mazzoncini to 2 group practices and clinics and 1 medical group.
What is Dr. Joseph Primo Mazzoncini Jr.'s office phone number?
The practice phone on file for Dr. Mazzoncini is (425) 899-1000.
What is Dr. Joseph Primo Mazzoncini Jr.'s medical license number?
Dr. Mazzoncini holds Washington license MD60248557.
Which hospitals is Dr. Joseph Primo Mazzoncini Jr. affiliated with?
Dr. Mazzoncini is affiliated with EvergreenHealth Medical Center.
What medical group is Dr. Joseph Primo Mazzoncini Jr. part of?
Dr. Mazzoncini is linked to Evergreen Emergency Services. Dmand AI links Dr. Mazzoncini to 1 more medical group.
Does Dr. Joseph Primo Mazzoncini Jr. accept Medicare?
Yes. CMS data shows Dr. Mazzoncini billed Medicare for 360 services in 2024, and Dr. Mazzoncini accepts Medicare assignment.
How many Medicare patients does Dr. Joseph Primo Mazzoncini Jr. see?
CMS counts 248 Medicare patients who saw Dr. Mazzoncini in 2024, with an average age of 76.
What services does Dr. Joseph Primo Mazzoncini Jr. bill to Medicare?
In 2024, Dr. Mazzoncini's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Show 3 more questionsShow fewer questions
Where did Dr. Joseph Primo Mazzoncini Jr. go to medical school?
Dr. Mazzoncini graduated from University of Washington School of Medicine in 2005.
What drugs does Dr. Joseph Primo Mazzoncini Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Mazzoncini's most prescribed drugs by claims were Oxycodone HCl, Ondansetron HCl and Cephalexin.
How long has Dr. Joseph Primo Mazzoncini Jr. been practicing?
Dr. Mazzoncini graduated from medical school in 2005, 21 years ago.
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