Dr. Mario Sznol, MD

  • New Haven, CT
  • Medical oncologist
NPI1073501748PAC ID8628194784
Medicare services, 2024
461
Medicare patients, 2024
123
Part D claims, 2024
333
Publications
131
Clinical trials
9
Practice address
20 York Street, New Haven, CT 06510
Practice phone
Call (203) 688-5900
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Yale New Haven Psychiatric Hospital (York St)

Psychiatric Inpatient Facility · New Haven, Connecticut

See all 9 affiliations

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Dr. Mario Sznol is a medical oncologist in New Haven, Connecticut

Dr. Sznol practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.

Dr. Sznol's NPI, 1073501748, was assigned on October 7, 2005. Dr. Sznol graduated from Baylor College Of Medicine in 1982. Dr. Sznol holds Connecticut license 0358548.

NPI and contact details
Medicare PAC ID
8628194784
NPI enumeration date
October 7, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(203) 688-5900
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
70
Medical school graduation
1982

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Mario Sznol practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut

Dr. Sznol's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.

  • Yale New Haven Psychiatric Hospital (York St)
    20 York Street, New Haven, CT 06510Phone(203) 688-5900

Source: Dmand AI Affiliation Data

Dr. Mario Sznol is affiliated with 7 sites of care and 2 medical groups

Dr. Sznol's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dr. Sznol is also affiliated with Yale New Haven Hospital. The medical group on file is Yale Health. Dmand AI also links Dr. Sznol to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.

See all 9 affiliations for Dr. Sznol

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Mario Sznol's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sznol practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Yale New Haven Psychiatric Hospital (York St)Available with a free account
+6 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mario Sznol is one of 80 medical oncologists in Connecticut

Medical oncology is Dr. Sznol's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Sznol is licensed in Connecticut.

Specialties and state licenses

  • Medical oncology, ConnecticutPrimaryLicense 0358548 · taxonomy 207RX0202X

Medical oncologists near Dr. Sznol

Counts of medical oncologists 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. Mario Sznol billed Medicare for 461 services in 2024

CMS data shows 461 Medicare services from Dr. Sznol across 3 procedure codes in 2024, all of them office visits, for 123 Medicare patients. Medicare paid $29,736 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024461
Medicare patients123
Paid by Medicare$29,736
Procedure codes3

Dr. Sznol's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4712024: 4612%

Dr. Sznol compared with the Connecticut median for medical oncologists, 2024

  • Dr. Sznol
  • Connecticut median
Medicare services
461vs 25283% above
Medicare patients
123vs 9628% above
Part D claims
243vs 19624% above

Medians across 76 medical oncologists in Connecticut with Dmand AI profiles that report each measure.

Dr. Sznol'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.

See all procedures by Dr. Sznol

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Mario Sznol treated 123 Medicare patients in 2024, average age 75

CMS counts 123 Medicare patients who saw Dr. Sznol in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.90, 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. Sznol's median patient age at 74, with 30% women.

Medicare patients, 2024123
Average age75
Average risk score2.90
Also on Medicaid11%

Dr. Sznol's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Sznol's Medicare patients by sex, 2024

  • Women3730%
  • Men8670%

Chronic conditions among Dr. Sznol's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol73%
  3. Arthritis50%
  4. Cancer45%
  5. Ischemic heart disease31%
  6. Chronic kidney disease29%
  7. Anxiety28%
  8. Mood disorders26%

Share of Medicare patients with each condition. A patient can have several.

Dr. Sznol's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 74

Patient panel by sex, all payers

  • Women30%
  • Men68%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Mario Sznol wrote 333 Medicare Part D claims in 2024

In 2024, Dr. Sznol wrote 333 Medicare Part D claims for 45 patients. 48% of them were for generic drugs. CMS names the drug for 243 of them, across 11 drugs with 11 or more claims each, at $2,730,165 in total drug cost. In 2023, CMS named 185 claims across 6 drugs.

Part D claims, 2024333
Drugs named by CMS11
Total drug cost$2.7M
Part D patients45

Dr. Sznol's Part D claims by kind of drug, 2024

  • Generic161 claims48%
  • Brand-name172 claims52%

Dr. Sznol'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: 1852024: 24331%

Drugs named by CMS: 11 in 2024, 6 in 2023.

See all prescribing by Dr. Sznol

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. Mario Sznol scored 87 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Sznol for performance year 2024, reported as part of a group. Dr. Sznol accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sznol as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Sznol's MIPS scores, performance year 2024

  • 87of 100Final score
  • 77.4of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 74of 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

For MedTech and pharma teams

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Dr. Mario Sznol has 131 publications on record

Dmand AI links 131 papers to Dr. Sznol, published from 2010 to 2025. 2017 was the busiest year, with 15. The most frequent topics are Melanoma, Nivolumab and Immunotherapy. Dr. Sznol has published most often in J Clin Oncol. Dr. Sznol's most frequent co-authors are Harriet Margot Kluger, MD, David Francis McDermott, MD and Michael B. Atkins, MD.

Papers131
Years published2010 to 2025

Dr. Sznol's papers by year, 2016 to 2025

Topics Dr. Sznol writes about most

  • Melanoma
  • Nivolumab
  • Immunotherapy
  • Antibodies, Monoclonal
  • Antineoplastic Combined Chemotherapy Protocols
  • Skin Neoplasms
  • Programmed Cell Death 1 Receptor
  • Ipilimumab

Dr. Sznol's most frequent co-authors

Recent publications by Dr. Sznol

See all 131 publications and co-authors

See who Dr. Sznol researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sznol works with, so you can find a warm path to the right medical oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Mario Sznol has worked on 9 clinical trials

Dmand AI links Dr. Sznol to 9 clinical trials, 4 of them phase 1 studies. Conditions studied include Carcinoma, Renal Cell, Melanoma and Brain Neoplasms. Open Payments lists research payments to Dr. Sznol that name 1 trial.

Clinical trials with Dr. Sznol by phase

  1. 4Phase 1: 4 trials
  2. 2Phase 1/2: 2 trials
  3. 2Phase 2: 2 trials
  4. NonePhase 3: no trials
  5. NonePhase 4: no trials

Conditions in Dr. Sznol's trials

  • Carcinoma, Renal Cell
  • Melanoma
  • Brain Neoplasms
  • Neoplasms, Squamous Cell
  • Sarcoma, Kaposi

Investigators on the most trials with Dr. Sznol

Recent clinical trials with Dr. Sznol

See all 9 clinical trials and co-investigators

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Mario Sznol received $256,979 in industry payments from 2016 to 2025

CMS Open Payments shows 261 general payments to Dr. Sznol from 31 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 81% of the total. Bristol-Myers Squibb Company paid the most, $45,523. It also lists 19 research payments totaling $14,502 from 2020 to 2025, naming 1 clinical trial.

General payments to Dr. Sznol by program year, 2016 to 2025

General payments to Dr. Sznol by kind, 2016 to 2025

$257Kin total
  • Consulting fees$205,23881%
  • Speaker and faculty fees$18,6137%
  • Honoraria$13,2505%
  • Travel and lodging$8,8173%
  • Other$8,9193%

Companies that paid Dr. Sznol the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Sznol

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Mario Sznol graduated from Baylor College Of Medicine

Dr. Sznol graduated from Baylor College Of Medicine in 1982.

  1. Medical schoolBaylor College Of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Mario Sznol's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Mario Sznol

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. Mario Sznol's NPI number?

Dr. Mario Sznol's NPI number is 1073501748. It was assigned on October 7, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Mario Sznol?

Dr. Mario Sznol is a medical oncologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).

Where does Dr. Mario Sznol practice?

Dr. Sznol practices at 20 York Street, New Haven, CT 06510. Dr. Sznol's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dmand AI also links Dr. Sznol to 4 hospitals, 1 group practice or clinic and 1 medical group.

What is Dr. Mario Sznol's office phone number?

The practice phone on file for Dr. Sznol is (203) 688-5900.

What is Dr. Mario Sznol's medical license number?

Dr. Sznol holds Connecticut license 0358548.

Which hospitals is Dr. Mario Sznol affiliated with?

Dr. Sznol is affiliated with Yale New Haven Hospital. Dmand AI links Dr. Sznol to 4 more hospitals.

What medical group is Dr. Mario Sznol part of?

Dr. Sznol is linked to Yale Health. Dmand AI links Dr. Sznol to 1 more medical group.

Does Dr. Mario Sznol accept Medicare?

Yes. CMS data shows Dr. Sznol billed Medicare for 461 services in 2024, and Dr. Sznol accepts Medicare assignment.

Does Dr. Mario Sznol offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Sznol as offering telehealth services.

What is Dr. Mario Sznol's MIPS score?

Dr. Sznol's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Mario Sznol see?

CMS counts 123 Medicare patients who saw Dr. Sznol in 2024, with an average age of 75.

What services does Dr. Mario Sznol bill to Medicare?

In 2024, Dr. Sznol's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, established patient (99215).

Where did Dr. Mario Sznol go to medical school?

Dr. Sznol graduated from Baylor College Of Medicine in 1982.

What drugs does Dr. Mario Sznol prescribe most?

In 2024 Medicare Part D data, Dr. Sznol's most prescribed drugs by claims were Cabometyx, Prednisone and Levothyroxine Sodium.

Has Dr. Mario Sznol received payments from drug or device companies?

CMS Open Payments shows $256,979 in general payments to Dr. Sznol from 31 companies from 2016 to 2025. The largest total came from Bristol-Myers Squibb Company.

How long has Dr. Mario Sznol been practicing?

Dr. Sznol graduated from medical school in 1982, 44 years ago.

Does Dr. Mario Sznol do research?

Dmand AI links 131 publications to Dr. Sznol, published from 2010 to 2025. Dr. Sznol has worked on 9 clinical trials.

Who does Dr. Mario Sznol publish with?

Dr. Sznol's most frequent co-authors are Harriet Margot Kluger, MD (52 shared papers), David Francis McDermott, MD (13 shared papers) and Michael B. Atkins, MD (9 shared papers).

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