Dr. Robert John Marchlewski, MD
- Medicare services, 2024
- 4,623
- Medicare patients, 2024
- 164
- Part D claims, 2024
- 409
- MIPS score, 2024
- 94
- Industry payments
- $6,488
- Practice address
- 990 Stewart Ave, Garden City, NY 11530
- Practice phone
- Call (914) 333-5800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ENT and Allergy Associates
Garden City, New York
Find Dr. Marchlewski'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. Robert John Marchlewski is an allergist and immunologist in Garden City, New York
Dr. Marchlewski practices at ENT and Allergy Associates in Garden City, New York.
Dr. Marchlewski's NPI, 1477630721, was assigned on November 1, 2006. Dr. Marchlewski graduated from Albert Einstein College of Medicine of Yeshiva University in 2001. Dr. Marchlewski holds New York license 232202.
- NPI
- 1477630721NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163594037
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (914) 333-5800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert John Marchlewski practices at ENT and Allergy Associates in Garden City, New York
Dr. Marchlewski's primary practice is ENT and Allergy Associates, at 990 Stewart Ave, Garden City, NY 11530 in Nassau County. The practice phone is (914) 333-5800.
- ENT and Allergy Associates990 Stewart Ave, Garden City, NY 11530 · Nassau CountyPhone(914) 333-5800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert John Marchlewski is affiliated with 2 sites of care and 1 medical group
Dr. Marchlewski's primary practice is ENT and Allergy Associates in Garden City, New York. The medical group on file is ENT and Allergy Associates. Dmand AI also links Dr. Marchlewski to 1 more group practice or clinic, 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 John Marchlewski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marchlewski practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ENT and Allergy Associates | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert John Marchlewski is one of 250 allergists and immunologists in New York
Allergy and immunology is Dr. Marchlewski's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Marchlewski is licensed in New York.
Specialties and state licenses
- Allergy and immunology, New YorkPrimary
Allergists and immunologists near Dr. Marchlewski
Counts of allergists and immunologists 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 John Marchlewski billed Medicare for 4,623 services in 2024
CMS data shows 4,623 Medicare services from Dr. Marchlewski across 5 procedure codes in 2024, for 164 Medicare patients. Medicare paid $35,310 for them. Every service was in an office.
Dr. Marchlewski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5,1772024: 4,47514%
- Office and hospital visits
- 2023: 1772024: 14816%
Dr. Marchlewski compared with the New York median for allergists and immunologists, 2024
- Dr. Marchlewski
- New York median
- Medicare services
- 4,623vs 1,0174.5 times
- Medicare patients
- 164vs 9769% above
- Part D claims
- 318vs 22243% above
Medians across 249 allergists and immunologists in New York with Dmand AI profiles that report each measure.
Dr. Marchlewski'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. Marchlewski and other allergists and immunologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert John Marchlewski treated 164 Medicare patients in 2024, average age 70
CMS counts 164 Medicare patients who saw Dr. Marchlewski in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 9% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marchlewski's median patient age at 21, with 53% women.
Dr. Marchlewski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marchlewski's Medicare patients by sex, 2024
- Women10866%
- Men5634%
Chronic conditions among Dr. Marchlewski's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis55%
- Anxiety30%
- Asthma26%
- Ischemic heart disease26%
- Diabetes25%
- Osteoporosis22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marchlewski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 21
Patient panel by sex, all payers
- Women53%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert John Marchlewski wrote 409 Medicare Part D claims in 2024
In 2024, Dr. Marchlewski wrote 409 Medicare Part D claims for 115 patients. 82% of them were for generic drugs. CMS names the drug for 318 of them, across 10 drugs with 11 or more claims each, at $17,424 in total drug cost. In 2023, CMS named 373 claims across 10 drugs.
Dr. Marchlewski's Part D claims by kind of drug, 2024
- Generic336 claims82%
- Brand-name73 claims18%
Dr. Marchlewski'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: 3732024: 31815%
Drugs named by CMS: 10 in 2024, 10 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
Dr. Robert John Marchlewski scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Marchlewski for performance year 2024, reported as part of a group. Dr. Marchlewski accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Marchlewski's MIPS scores, performance year 2024
- 94of 100Final score
- 89.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Robert John Marchlewski received $6,488 in industry payments from 2016 to 2025
CMS Open Payments shows 362 general payments to Dr. Marchlewski from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Sanofi and Genzyme US Companies paid the most, $1,476.
General payments to Dr. Marchlewski by program year, 2016 to 2025
General payments to Dr. Marchlewski by kind, 2016 to 2025
- Food and beverage$6,33198%
- Education$1572%
Companies that paid Dr. Marchlewski the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert John Marchlewski graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Marchlewski graduated from Albert Einstein College of Medicine of Yeshiva University in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert John Marchlewski'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)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. Robert John Marchlewski
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 John Marchlewski's NPI number?
Dr. Robert John Marchlewski's NPI number is 1477630721. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert John Marchlewski?
Dr. Robert John Marchlewski is an allergist and immunologist in Garden City, New York. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Robert John Marchlewski practice?
Dr. Marchlewski practices at 990 Stewart Ave, Garden City, NY 11530. Dr. Marchlewski's primary practice is ENT and Allergy Associates in Garden City, New York. Dmand AI also links Dr. Marchlewski to 1 group practice or clinic.
What is Dr. Robert John Marchlewski's office phone number?
The practice phone on file for Dr. Marchlewski is (914) 333-5800.
What is Dr. Robert John Marchlewski's medical license number?
Dr. Marchlewski holds New York license 232202.
What medical group is Dr. Robert John Marchlewski part of?
Dr. Marchlewski is linked to ENT and Allergy Associates.
Does Dr. Robert John Marchlewski accept Medicare?
Yes. CMS data shows Dr. Marchlewski billed Medicare for 4,623 services in 2024, and Dr. Marchlewski accepts Medicare assignment.
What is Dr. Robert John Marchlewski's MIPS score?
Dr. Marchlewski's MIPS final score for performance year 2024 is 94 out of 100, reported as part of a group.
How many Medicare patients does Dr. Robert John Marchlewski see?
CMS counts 164 Medicare patients who saw Dr. Marchlewski in 2024, with an average age of 70.
What services does Dr. Robert John Marchlewski bill to Medicare?
In 2024, Dr. Marchlewski's most billed Medicare services were allergy test or treatment (95004), allergy test or treatment (95117) and allergy test or treatment (95018).
Show 4 more questionsShow fewer questions
Where did Dr. Robert John Marchlewski go to medical school?
Dr. Marchlewski graduated from Albert Einstein College of Medicine of Yeshiva University in 2001.
What drugs does Dr. Robert John Marchlewski prescribe most?
In 2024 Medicare Part D data, Dr. Marchlewski's most prescribed drugs by claims were Montelukast Sodium, Levocetirizine Dihydrochloride and Azelastine HCl.
Has Dr. Robert John Marchlewski received payments from drug or device companies?
CMS Open Payments shows $6,488 in general payments to Dr. Marchlewski from 32 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Robert John Marchlewski been practicing?
Dr. Marchlewski graduated from medical school in 2001, 25 years ago.
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