Dr. Robert Leonard Mazgaj, MD
- Medicare services, 2024
- 202
- Medicare patients, 2024
- 70
- Part D claims, 2024
- 795
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 550 1st Ave, New York, NY 10016
- Practice phone
- Call (212) 263-3130
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
NYU Langone - Tisch Hospital
New York, New York
Find Dr. Mazgaj's professional email, personal email and mobile number
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Dr. Robert Leonard Mazgaj is a psychiatrist in New York, New York
Dr. Mazgaj practices at NYU Langone - Tisch Hospital in New York, New York.
Dr. Mazgaj's NPI, 1528478823, was assigned on May 7, 2014. Dr. Mazgaj graduated from New York University School of Medicine in 2014. Dr. Mazgaj holds New York license 281413.
- NPI
- 1528478823NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204129646
- NPI enumeration date
- May 7, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (212) 263-3130
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Leonard Mazgaj practices at NYU Langone - Tisch Hospital in New York, New York
Dr. Mazgaj's primary practice is NYU Langone - Tisch Hospital, at 550 1st Ave, New York, NY 10016 in New York County. The practice phone is (212) 263-3130.
- NYU Langone - Tisch Hospital550 1st Ave, New York, NY 10016 · New York CountyPhone(212) 263-3130
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert Leonard Mazgaj is affiliated with 3 sites of care and 2 medical groups
Dr. Mazgaj's primary practice is NYU Langone - Tisch Hospital in New York, New York. Dr. Mazgaj is also affiliated with Select Specialty Hospital - Durham. The medical group on file is Duke Health Integrated Practice. Dmand AI also links Dr. Mazgaj to 1 more group practice or clinic and 1 medical group, 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. Robert Leonard Mazgaj's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazgaj practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NYU Langone - Tisch Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Leonard Mazgaj is one of 4,448 psychiatrists in New York
Psychiatry is Dr. Mazgaj's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Mazgaj is licensed in New York.
Specialties and state licenses
- Psychiatry, New YorkPrimary
Psychiatrists near Dr. Mazgaj
Counts of psychiatrists 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. Robert Leonard Mazgaj billed Medicare for 202 services in 2024
CMS data shows 202 Medicare services from Dr. Mazgaj across 3 procedure codes in 2024, for 70 Medicare patients. Medicare paid $20,680 for them. Every service was in an office.
Dr. Mazgaj's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2112024: 15726%
- Tests and treatments
- 2023: 02024: 45
Dr. Mazgaj compared with the New York median for psychiatrists, 2024
- Dr. Mazgaj
- New York median
- Medicare services
- 202vs 14242% above
- Medicare patients
- 70vs 4171% above
- Part D claims
- 631vs 1245.1 times
Medians across 5,024 psychiatrists in New York with Dmand AI profiles that report each measure.
Dr. Mazgaj'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. Robert Leonard Mazgaj treated 70 Medicare patients in 2024, average age 69
CMS counts 70 Medicare patients who saw Dr. Mazgaj in 2024. The largest group is 75 to 84, with 25 patients. 75% of them have anxiety, and 75% have depression. 21% are also on Medicaid. Their average risk score is 1.72, 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. Mazgaj's median patient age at 49, with 58% women.
Dr. Mazgaj's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mazgaj's Medicare patients by sex, 2024
- Women5173%
- Men1927%
Chronic conditions among Dr. Mazgaj's Medicare patients, 2024
- Anxiety75%
- Depression75%
- Mood disorders75%
- High cholesterol74%
- High blood pressure69%
- Arthritis53%
- Alzheimer's and dementia31%
- Chronic kidney disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mazgaj's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women58%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert Leonard Mazgaj wrote 795 Medicare Part D claims in 2024
In 2024, Dr. Mazgaj wrote 795 Medicare Part D claims for 92 patients. 97% of them were for generic drugs. CMS names the drug for 631 of them, across 19 drugs with 11 or more claims each, at $8,893 in total drug cost. In 2019, CMS named 375 claims across 15 drugs.
Dr. Mazgaj's Part D claims by kind of drug, 2024
- Generic773 claims97%
- Brand-name22 claims3%
Dr. Mazgaj'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. Mazgaj's Part D claims, 2024
- Antipsychotics, patients 65 and over12%99 of 795 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, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 3752024: 63168%
Drugs named by CMS: 19 in 2024, 15 in 2019.
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
Dr. Robert Leonard Mazgaj offers telehealth to Medicare patients
Dr. Mazgaj accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mazgaj as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Robert Leonard Mazgaj graduated from New York University School of Medicine
Dr. Mazgaj graduated from New York University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Leonard Mazgaj'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) |
| 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. Robert Leonard Mazgaj
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. Robert Leonard Mazgaj's NPI number?
Dr. Robert Leonard Mazgaj's NPI number is 1528478823. It was assigned on May 7, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Leonard Mazgaj?
Dr. Robert Leonard Mazgaj is a psychiatrist in New York, New York. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Robert Leonard Mazgaj practice?
Dr. Mazgaj practices at 550 1st Ave, New York, NY 10016. Dr. Mazgaj's primary practice is NYU Langone - Tisch Hospital in New York, New York. Dmand AI also links Dr. Mazgaj to 1 group practice or clinic and 1 medical group.
What is Dr. Robert Leonard Mazgaj's office phone number?
The practice phone on file for Dr. Mazgaj is (212) 263-3130.
What is Dr. Robert Leonard Mazgaj's medical license number?
Dr. Mazgaj holds New York license 281413.
Which hospitals is Dr. Robert Leonard Mazgaj affiliated with?
Dr. Mazgaj is affiliated with Select Specialty Hospital - Durham.
What medical group is Dr. Robert Leonard Mazgaj part of?
Dr. Mazgaj is linked to Duke Health Integrated Practice. Dmand AI links Dr. Mazgaj to 1 more medical group.
Does Dr. Robert Leonard Mazgaj accept Medicare?
Yes. CMS data shows Dr. Mazgaj billed Medicare for 202 services in 2024, and Dr. Mazgaj accepts Medicare assignment.
Does Dr. Robert Leonard Mazgaj offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mazgaj as offering telehealth services.
How many Medicare patients does Dr. Robert Leonard Mazgaj see?
CMS counts 70 Medicare patients who saw Dr. Mazgaj in 2024, with an average age of 69.
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What services does Dr. Robert Leonard Mazgaj bill to Medicare?
In 2024, Dr. Mazgaj's most billed Medicare services were office visit, established patient (99214), psychiatric service (90792) and office visit, established patient (99213).
Where did Dr. Robert Leonard Mazgaj go to medical school?
Dr. Mazgaj graduated from New York University School of Medicine in 2014.
What drugs does Dr. Robert Leonard Mazgaj prescribe most?
In 2024 Medicare Part D data, Dr. Mazgaj's most prescribed drugs by claims were Mirtazapine, Venlafaxine HCl ER and Trazodone HCl.
How long has Dr. Robert Leonard Mazgaj been practicing?
Dr. Mazgaj graduated from medical school in 2014, 12 years ago.
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