Dr. Jonathan Mazer, MD
- Medicare services, 2024
- 136
- Medicare patients, 2024
- 243
- MIPS score, 2024
- 60
- Hospital affiliations
- 2
- Industry payments
- $3,428
- Practice address
- 37 N Fullerton Ave, Montclair, NJ 07042
- Practice phone
- Call (973) 233-0433
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
North Fullerton Surgery Center, LLC
Montclair, New Jersey
Find Dr. Mazer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jonathan Mazer is an anesthesiologist in Montclair, New Jersey
Dr. Mazer practices at North Fullerton Surgery Center, LLC in Montclair, New Jersey.
Dr. Mazer's NPI, 1902288194, was assigned on June 24, 2015. Dr. Mazer graduated from State University of New York Downstate Medical Center College of Medicine in 2015. Dr. Mazer holds New Jersey license 25MA10401500.
- NPI
- 1902288194NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709192669
- NPI enumeration date
- June 24, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (973) 233-0433
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan Mazer practices at North Fullerton Surgery Center, LLC in Montclair, New Jersey
Dr. Mazer's primary practice is North Fullerton Surgery Center, LLC, at 37 N Fullerton Ave, Montclair, NJ 07042 in Essex County. The practice phone is (973) 233-0433.
- North Fullerton Surgery Center, LLC37 N Fullerton Ave, Montclair, NJ 07042 · Essex CountyPhone(973) 233-0433
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jonathan Mazer is affiliated with 5 sites of care and 9 medical groups
Dr. Mazer's primary practice is North Fullerton Surgery Center, LLC in Montclair, New Jersey. Dr. Mazer is also affiliated with Brigham and Women's Hospital. The medical group on file is RWJBarnabas Health Medical Group. Dmand AI also links Dr. Mazer to 1 more hospital, 8 medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jonathan Mazer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| North Fullerton Surgery Center, LLC | Available with a free account |
| +4 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan Mazer is one of 1,613 anesthesiologists in New Jersey
Anesthesiology is Dr. Mazer's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Mazer's licenses on file in 2 states: New Jersey and Massachusetts.
Specialties and state licenses
- Anesthesiology, New JerseyPrimary
- Student in an organized health care education/training program, Massachusetts
Anesthesiologists near Dr. Mazer
Counts of anesthesiologists 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. Jonathan Mazer billed Medicare for 136 services in 2024
CMS data shows 136 Medicare services from Dr. Mazer across 5 procedure codes in 2024, for 243 Medicare patients. Medicare paid $14,595 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mazer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1692024: 13620%
Dr. Mazer compared with the New Jersey median for anesthesiologists, 2024
- Dr. Mazer
- New Jersey median
- Medicare services
- 136vs 9248% above
- Medicare patients
- 243vs 16944% above
Medians across 1,604 anesthesiologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Mazer'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mazer and other anesthesiologists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan Mazer treated 243 Medicare patients in 2024, average age 75
CMS counts 243 Medicare patients who saw Dr. Mazer in 2024. The largest group is 65 to 74, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mazer's median patient age at 61, with 71% women.
Dr. Mazer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mazer's Medicare patients by sex, 2024
- Women12351%
- Men12049%
Chronic conditions among Dr. Mazer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Ischemic heart disease40%
- Diabetes30%
- Anxiety29%
- Chronic kidney disease27%
- Cancer26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mazer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women71%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Mazer scored 60 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 60 out of 100 for Dr. Mazer for performance year 2024, reported as part of a group. Dr. Mazer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mazer's MIPS scores, performance year 2024
- 60of 100Final score
- 46.6of 100Quality
- 40of 100Improvement Activities
- 65of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jonathan Mazer received $3,428 in industry payments from 2019 to 2025
CMS Open Payments shows 7 general payments to Dr. Mazer from 5 drug and device companies from 2019 to 2025. Consulting fees make up the largest share, 98% of the total. Astellas Pharma US Inc paid the most, $3,252.
General payments to Dr. Mazer by program year, 2019 to 2025
General payments to Dr. Mazer by kind, 2019 to 2025
- Consulting fees$3,35298%
- Food and beverage$762%
Companies that paid Dr. Mazer the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan Mazer graduated from State University of New York Downstate Medical Center College of Medicine
Dr. Mazer graduated from State University of New York Downstate Medical Center College of Medicine in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan Mazer'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Jonathan Mazer
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. Jonathan Mazer's NPI number?
Dr. Jonathan Mazer's NPI number is 1902288194. It was assigned on June 24, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Mazer?
Dr. Jonathan Mazer is an anesthesiologist in Montclair, New Jersey. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Jonathan Mazer practice?
Dr. Mazer practices at 37 N Fullerton Ave, Montclair, NJ 07042. Dr. Mazer's primary practice is North Fullerton Surgery Center, LLC in Montclair, New Jersey. Dmand AI also links Dr. Mazer to 1 hospital, 8 medical groups and 2 group practices and clinics.
What is Dr. Jonathan Mazer's office phone number?
The practice phone on file for Dr. Mazer is (973) 233-0433.
What is Dr. Jonathan Mazer's medical license number?
Dr. Mazer holds New Jersey license 25MA10401500, one of the licenses on file in 2 states.
Which states has Dr. Jonathan Mazer been licensed in?
Dmand AI has state licenses on file for Dr. Mazer in New Jersey and Massachusetts.
Which hospitals is Dr. Jonathan Mazer affiliated with?
Dr. Mazer is affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Mazer to 1 more hospital.
What medical group is Dr. Jonathan Mazer part of?
Dr. Mazer is linked to RWJBarnabas Health Medical Group. Dmand AI links Dr. Mazer to 8 more medical groups.
Does Dr. Jonathan Mazer accept Medicare?
Yes. CMS data shows Dr. Mazer billed Medicare for 136 services in 2024, and Dr. Mazer accepts Medicare assignment.
What is Dr. Jonathan Mazer's MIPS score?
Dr. Mazer's MIPS final score for performance year 2024 is 60 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Jonathan Mazer see?
CMS counts 243 Medicare patients who saw Dr. Mazer in 2024, with an average age of 75.
What services does Dr. Jonathan Mazer bill to Medicare?
In 2024, Dr. Mazer's most billed Medicare services were anesthesia (00731), anesthesia (00142) and anesthesia (00812).
Where did Dr. Jonathan Mazer go to medical school?
Dr. Mazer graduated from State University of New York Downstate Medical Center College of Medicine in 2015.
Has Dr. Jonathan Mazer received payments from drug or device companies?
CMS Open Payments shows $3,428 in general payments to Dr. Mazer from 5 companies from 2019 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Jonathan Mazer been practicing?
Dr. Mazer graduated from medical school in 2015, 11 years ago.
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