Dr. Yu Jen Alexander Jan, MD
- Medicare services, 2024
- 80
- Medicare patients, 2024
- 70
- Part D claims, 2024
- 15
- Hospital affiliations
- 1
- Industry payments
- $99
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Jan'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. Yu Jen Alexander Jan is a hematologist and oncologist in Boston, Massachusetts
Dr. Jan practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Jan's NPI, 1598320434, was assigned on May 7, 2019. Dr. Jan holds Pennsylvania license MT230352.
- NPI
- 1598320434NPI Registry (opens in a new tab)
- NPI enumeration date
- May 7, 2019
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yu Jen Alexander Jan practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Jan's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yu Jen Alexander Jan is affiliated with 1 site of care and 1 medical group
Dr. Jan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Physicians Organization (MGPO).
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Yu Jen Alexander Jan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Jan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Yu Jen Alexander Jan is one of 429 hematologists and oncologists in Massachusetts
Hematology and oncology is Dr. Jan's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Jan's licenses on file in 2 states: Pennsylvania and Massachusetts.
Specialties and state licenses
- Hematology and oncology, PennsylvaniaPrimary
- Internal medicine, Massachusetts
Hematologists and oncologists near Dr. Jan
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. Yu Jen Alexander Jan billed Medicare for 80 services in 2024
CMS data shows 80 Medicare services from Dr. Jan across 2 procedure codes in 2024, for 70 Medicare patients. Medicare paid $8,578 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Jan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1962024: 8059%
Dr. Jan compared with the Massachusetts median for hematologists and oncologists, 2024
- Dr. Jan
- Massachusetts median
- Medicare services
- 80vs 49584% below
- Medicare patients
- 70vs 20065% below
- Part D claims
- 49vs 15168% below
Medians across 415 hematologists and oncologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Jan'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. Jan and other hematologists and oncologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Yu Jen Alexander Jan treated 70 Medicare patients in 2024, average age 75
CMS counts 70 Medicare patients who saw Dr. Jan in 2024. The largest group is 75 to 84, with 25 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 3.75, 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. Jan's median patient age at 61, with 50% women.
Dr. Jan's Medicare patients by age, 2024
Dr. Jan's Medicare patients by sex, 2024
- Women3449%
- Men3651%
Chronic conditions among Dr. Jan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety69%
- Mood disorders66%
- Chronic kidney disease64%
- Depression60%
- Arthritis57%
- Heart failure56%
Share of Medicare patients with each condition. A patient can have several.
Dr. Jan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yu Jen Alexander Jan wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Jan wrote 15 Medicare Part D claims. They cover 4 drugs, with $6,377 in total drug cost. In 2019, CMS named 35 claims across 3 drugs.
Dr. Jan's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 352020: 4940%
Drugs named by CMS: 4 in 2020, 3 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
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Dr. Yu Jen Alexander Jan received $99 in industry payments from 2021 to 2024
CMS Open Payments shows 2 general payments to Dr. Jan from 2 drug and device companies from 2021 to 2024. Education make up the largest share, 86% of the total. Eli Lilly and Company paid the most, $85.
General payments to Dr. Jan by program year, 2021 to 2024
General payments to Dr. Jan by kind, 2021 to 2024
- Education$8586%
- Food and beverage$1414%
Companies that paid Dr. Jan the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Yu Jen Alexander Jan'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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) |
| 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. Yu Jen Alexander Jan
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. Yu Jen Alexander Jan's NPI number?
Dr. Yu Jen Alexander Jan's NPI number is 1598320434. It was assigned on May 7, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Yu Jen Alexander Jan?
Dr. Yu Jen Alexander Jan is a hematologist and oncologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Yu Jen Alexander Jan practice?
Dr. Jan practices at 55 Fruit Street, Boston, MA 02114. Dr. Jan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
What is Dr. Yu Jen Alexander Jan's office phone number?
The practice phone on file for Dr. Jan is (617) 726-2000.
What is Dr. Yu Jen Alexander Jan's medical license number?
Dr. Jan holds Pennsylvania license MT230352, one of the licenses on file in 2 states.
Which states has Dr. Yu Jen Alexander Jan been licensed in?
Dmand AI has state licenses on file for Dr. Jan in Pennsylvania and Massachusetts.
Which hospitals is Dr. Yu Jen Alexander Jan affiliated with?
Dr. Jan practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Yu Jen Alexander Jan part of?
Dr. Jan is linked to Massachusetts General Physicians Organization (MGPO).
Does Dr. Yu Jen Alexander Jan accept Medicare?
Yes. CMS data shows Dr. Jan billed Medicare for 80 services in 2024.
How many Medicare patients does Dr. Yu Jen Alexander Jan see?
CMS counts 70 Medicare patients who saw Dr. Jan in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Yu Jen Alexander Jan bill to Medicare?
In 2024, Dr. Jan's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99223).
What drugs does Dr. Yu Jen Alexander Jan prescribe most?
In 2020 Medicare Part D data, Dr. Jan's most prescribed drugs by claims were Clopidogrel, Albuterol Sulfate Hfa and Eliquis.
Has Dr. Yu Jen Alexander Jan received payments from drug or device companies?
CMS Open Payments shows $99 in general payments to Dr. Jan from 2 companies from 2021 to 2024. The largest total came from Eli Lilly and Company.
How long has Dr. Yu Jen Alexander Jan been practicing?
Dr. Jan graduated from medical school in 2015, 11 years ago.
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