Dr. Adam Jan Olszewski, MD
- Medicare services, 2024
- 342
- Medicare patients, 2024
- 156
- Part D claims, 2024
- 596
- Hospital affiliations
- 3
- Industry payments
- $66,405
- Practice address
- 593 Eddy St, Providence, RI 02903
- Practice phone
- Call (401) 444-6966
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rhode Island Hospital/Hasbro Children's
Providence, Rhode Island
Find Dr. Olszewski'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. Adam Jan Olszewski is a hematologist and oncologist in Providence, Rhode Island
Dr. Olszewski practices at Rhode Island Hospital/Hasbro Children's in Providence, Rhode Island.
Dr. Olszewski's NPI, 1467436915, was assigned on November 29, 2005. Dr. Olszewski holds Rhode Island license MD11974.
- NPI
- 1467436915NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557366812
- NPI enumeration date
- November 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (401) 444-6966
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Adam Jan Olszewski practices at Rhode Island Hospital/Hasbro Children's in Providence, Rhode Island
Dr. Olszewski's primary practice is Rhode Island Hospital/Hasbro Children's, at 593 Eddy St, Providence, RI 02903 in Providence County. The practice phone is (401) 444-6966.
- Rhode Island Hospital/Hasbro Children's593 Eddy St, Providence, RI 02903 · Providence CountyPhone(401) 444-6966
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Adam Jan Olszewski is affiliated with 4 sites of care and 1 medical group
Dr. Olszewski's primary practice is Rhode Island Hospital/Hasbro Children's in Providence, Rhode Island. Dr. Olszewski is also affiliated with The Miriam Hospital. The medical group on file is Rhode Island Hospital. Dmand AI also links Dr. Olszewski to 2 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Adam Jan Olszewski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Olszewski practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rhode Island Hospital/Hasbro Children's | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Adam Jan Olszewski is one of 69 hematologists and oncologists in Rhode Island
Hematology and oncology is Dr. Olszewski's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Olszewski is licensed in Rhode Island.
Specialties and state licenses
- Hematology and oncology, Rhode IslandPrimary
Hematologists and oncologists near Dr. Olszewski
Counts of hematologists and 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. Adam Jan Olszewski billed Medicare for 342 services in 2024
CMS data shows 342 Medicare services from Dr. Olszewski across 6 procedure codes in 2024, for 156 Medicare patients. Medicare paid $25,997 for them.
Dr. Olszewski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3582024: 3424%
Where Dr. Olszewski's Medicare services took place, 2024
- In an office7121%
- In a facility27179%
Dr. Olszewski compared with the Rhode Island median for hematologists and oncologists, 2024
- Dr. Olszewski
- Rhode Island median
- Medicare services
- 342vs 3708% below
- Medicare patients
- 156vs 1666% below
- Part D claims
- 378vs 393Close to median
Medians across 68 hematologists and oncologists in Rhode Island with Dmand AI profiles that report each measure.
Dr. Olszewski'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. Olszewski and other hematologists and oncologists in Rhode Island.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Adam Jan Olszewski treated 156 Medicare patients in 2024, average age 76
CMS counts 156 Medicare patients who saw Dr. Olszewski in 2024. The largest group is 75 to 84, with 72 patients. 74% of them have high blood pressure, and 74% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.24, 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. Olszewski's median patient age at 74, with 58% women.
Dr. Olszewski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Olszewski's Medicare patients by sex, 2024
- Women8152%
- Men7548%
Chronic conditions among Dr. Olszewski's Medicare patients, 2024
- High blood pressure74%
- High cholesterol74%
- Arthritis44%
- Atrial fibrillation34%
- Ischemic heart disease33%
- Mood disorders29%
- Anxiety27%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Olszewski'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
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Adam Jan Olszewski wrote 596 Medicare Part D claims in 2024
In 2024, Dr. Olszewski wrote 596 Medicare Part D claims for 98 patients. 71% of them were for generic drugs. CMS names the drug for 378 of them, across 16 drugs with 11 or more claims each, at $1,467,767 in total drug cost. In 2023, CMS named 328 claims across 15 drugs.
Dr. Olszewski's Part D claims by kind of drug, 2024
- Generic424 claims71%
- Brand-name and other172 claims29%
Dr. Olszewski'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. Olszewski's Part D claims, 2024
- Opioids6%35 of 596 claims
- Antibiotics5%29 of 596 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3282024: 37815%
Drugs named by CMS: 16 in 2024, 15 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. Adam Jan Olszewski offers telehealth to Medicare patients
Dr. Olszewski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Olszewski as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Adam Jan Olszewski received $66,405 in industry payments from 2017 to 2025
CMS Open Payments shows 80 general payments to Dr. Olszewski from 15 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 69% of the total. Genentech, Inc. paid the most, $15,287. It also lists 20 research payments totaling $13,208 from 2021 to 2025.
General payments to Dr. Olszewski by program year, 2017 to 2025
General payments to Dr. Olszewski by kind, 2017 to 2025
- Consulting fees$45,96469%
- Travel and lodging$15,15523%
- Speaker and faculty fees$2,7124%
- Food and beverage$2,4904%
- Education$850%
Companies that paid Dr. Olszewski the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Adam Jan Olszewski'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 DataDmand AI Org Hierarchy 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Adam Jan Olszewski
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. Adam Jan Olszewski's NPI number?
Dr. Adam Jan Olszewski's NPI number is 1467436915. It was assigned on November 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Adam Jan Olszewski?
Dr. Adam Jan Olszewski is a hematologist and oncologist in Providence, Rhode Island. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Adam Jan Olszewski practice?
Dr. Olszewski practices at 593 Eddy St, Providence, RI 02903. Dr. Olszewski's primary practice is Rhode Island Hospital/Hasbro Children's in Providence, Rhode Island. Dmand AI also links Dr. Olszewski to 2 hospitals.
What is Dr. Adam Jan Olszewski's office phone number?
The practice phone on file for Dr. Olszewski is (401) 444-6966.
What is Dr. Adam Jan Olszewski's medical license number?
Dr. Olszewski holds Rhode Island license MD11974.
Which hospitals is Dr. Adam Jan Olszewski affiliated with?
Dr. Olszewski is affiliated with The Miriam Hospital. Dmand AI links Dr. Olszewski to 2 more hospitals.
What medical group is Dr. Adam Jan Olszewski part of?
Dr. Olszewski is linked to Rhode Island Hospital.
Does Dr. Adam Jan Olszewski accept Medicare?
Yes. CMS data shows Dr. Olszewski billed Medicare for 342 services in 2024, and Dr. Olszewski accepts Medicare assignment.
Does Dr. Adam Jan Olszewski offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Olszewski as offering telehealth services.
How many Medicare patients does Dr. Adam Jan Olszewski see?
CMS counts 156 Medicare patients who saw Dr. Olszewski in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Adam Jan Olszewski bill to Medicare?
In 2024, Dr. Olszewski's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).
What drugs does Dr. Adam Jan Olszewski prescribe most?
In 2024 Medicare Part D data, Dr. Olszewski's most prescribed drugs by claims were Brukinsa, Allopurinol and Calquence.
Has Dr. Adam Jan Olszewski received payments from drug or device companies?
CMS Open Payments shows $66,405 in general payments to Dr. Olszewski from 15 companies from 2017 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Adam Jan Olszewski been practicing?
Dr. Olszewski graduated from medical school in 1999, 27 years ago.
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