Dr. Kathryn Leigh Mazza, DO
- Medicare services, 2023
- 47
- Part D claims, 2024
- 853
- Hospital affiliations
- 1
- Industry payments
- $247
- Medical groups
- 3
- Practice address
- 1650 Grand Concourse FL 14, Bronx, NY 10457
- Practice phone
- Call (718) 518-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
BronxCare Ambulatory Care Network
FQHC - Clinic in Nursing Home / Jail / Hospital · Bronx, New York
Find Dr. Mazza's professional email, personal email and mobile number
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Dr. Kathryn Leigh Mazza is an internist in Bronx, New York
Dr. Mazza practices at BronxCare Ambulatory Care Network in Bronx, New York.
Dr. Mazza's NPI, 1497196471, was assigned on July 8, 2013. Dr. Mazza graduated from Nova Southeastern University - College of Osteopathic Medicine in 2012. Dr. Mazza holds Connecticut license 079272.
- NPI
- 1497196471NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375817810
- NPI enumeration date
- July 8, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (718) 518-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathryn Leigh Mazza practices at BronxCare Ambulatory Care Network in Bronx, New York
Dr. Mazza's primary practice is BronxCare Ambulatory Care Network, at 1650 Grand Concourse FL 14, Bronx, NY 10457 in Bronx County. The practice phone is (718) 518-5000.
- BronxCare Ambulatory Care Network1650 Grand Concourse FL 14, Bronx, NY 10457 · Bronx CountyPhone(718) 518-5000
Source: Dmand AI Affiliation Data
Dr. Kathryn Leigh Mazza is affiliated with 3 sites of care and 3 medical groups
Dr. Mazza's primary practice is BronxCare Ambulatory Care Network in Bronx, New York. Dr. Mazza is also affiliated with BronxCare Hospital Center. The medical group on file is BronxCare Health System. Dmand AI also links Dr. Mazza to 2 more medical groups and 1 breast imaging center, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kathryn Leigh Mazza's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazza practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| BronxCare Ambulatory Care Network | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kathryn Leigh Mazza is one of 9,643 internists in New York
Internal medicine is Dr. Mazza's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Mazza's licenses on file in 2 states: Connecticut and New York.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
- Family medicine, New York
Internists near Dr. Mazza
Counts of internists 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. Kathryn Leigh Mazza billed Medicare for 47 services in 2023
CMS data shows 47 Medicare services from Dr. Mazza across 2 procedure codes in 2023, all of them office visits. Medicare paid $2,207 for them. Every service was in an office.
Dr. Mazza's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 182023: 47161%
Dr. Mazza compared with the New York median for internists, 2023
- Dr. Mazza
- New York median
- Medicare services
- 47vs 42689% below
- Part D claims
- 536vs 62214% below
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Mazza's most billed Medicare procedure codes, 2023
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. Mazza and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathryn Leigh Mazza's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Mazza's median patient age at 51, with 58% women.
Dr. Mazza's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women58%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Kathryn Leigh Mazza wrote 853 Medicare Part D claims in 2024
In 2024, Dr. Mazza wrote 853 Medicare Part D claims for 122 patients. 78% of them were for generic drugs. CMS names the drug for 536 of them, across 18 drugs with 11 or more claims each, at $115,730 in total drug cost. In 2023, CMS named 350 claims across 17 drugs.
Dr. Mazza's Part D claims by kind of drug, 2024
- Generic669 claims78%
- Brand-name and other184 claims22%
Dr. Mazza'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3502024: 53653%
Drugs named by CMS: 18 in 2024, 17 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. Kathryn Leigh Mazza takes part in Medicare
Dr. Mazza 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. Kathryn Leigh Mazza received $247 in industry payments from 2018 to 2021
CMS Open Payments shows 9 general payments to Dr. Mazza from 4 drug and device companies from 2018 to 2021. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $92.
General payments to Dr. Mazza by program year, 2018 to 2021
Companies that paid Dr. Mazza the most, 2018 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathryn Leigh Mazza graduated from Nova Southeastern University - College of Osteopathic Medicine
Dr. Mazza graduated from Nova Southeastern University - College of Osteopathic Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathryn Leigh Mazza'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 Data |
| 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) |
| 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. Kathryn Leigh Mazza
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. Kathryn Leigh Mazza's NPI number?
Dr. Kathryn Leigh Mazza's NPI number is 1497196471. It was assigned on July 8, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathryn Leigh Mazza?
Dr. Kathryn Leigh Mazza is an internist in Bronx, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kathryn Leigh Mazza practice?
Dr. Mazza practices at 1650 Grand Concourse FL 14, Bronx, NY 10457. Dr. Mazza's primary practice is BronxCare Ambulatory Care Network in Bronx, New York. Dmand AI also links Dr. Mazza to 2 medical groups and 1 breast imaging center.
What is Dr. Kathryn Leigh Mazza's office phone number?
The practice phone on file for Dr. Mazza is (718) 518-5000.
What is Dr. Kathryn Leigh Mazza's medical license number?
Dr. Mazza holds Connecticut license 079272, one of the licenses on file in 2 states.
Which states has Dr. Kathryn Leigh Mazza been licensed in?
Dmand AI has state licenses on file for Dr. Mazza in Connecticut and New York.
Which hospitals is Dr. Kathryn Leigh Mazza affiliated with?
Dr. Mazza is affiliated with BronxCare Hospital Center.
What medical group is Dr. Kathryn Leigh Mazza part of?
Dr. Mazza is linked to BronxCare Health System. Dmand AI links Dr. Mazza to 2 more medical groups.
Does Dr. Kathryn Leigh Mazza accept Medicare?
Yes. CMS data shows Dr. Mazza billed Medicare for 47 services in 2023, and Dr. Mazza accepts Medicare assignment.
What services does Dr. Kathryn Leigh Mazza bill to Medicare?
In 2023, Dr. Mazza's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99214).
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Where did Dr. Kathryn Leigh Mazza go to medical school?
Dr. Mazza graduated from Nova Southeastern University - College of Osteopathic Medicine in 2012.
What drugs does Dr. Kathryn Leigh Mazza prescribe most?
In 2024 Medicare Part D data, Dr. Mazza's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Albuterol Sulfate Hfa.
Has Dr. Kathryn Leigh Mazza received payments from drug or device companies?
CMS Open Payments shows $247 in general payments to Dr. Mazza from 4 companies from 2018 to 2021. The largest total came from Gilead Sciences, Inc.
How long has Dr. Kathryn Leigh Mazza been practicing?
Dr. Mazza graduated from medical school in 2012, 14 years ago.
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