Dr. Marissa M. Li, MD
- Medicare services, 2024
- 54
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 135
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 1216 Second Street Southwest, Rochester, MN 55902
- Practice phone
- Call (507) 255-5123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Li's professional email, personal email and mobile number
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Dr. Marissa M. Li is a hematologist and oncologist in Rochester, Minnesota
Dr. Li practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.
Dr. Li's NPI, 1437711959, was assigned on July 4, 2019. Dr. Li graduated from Northeastern Ohio University College of Medicine in 2019. Dr. Li holds Minnesota license 67767.
- NPI
- 1437711959NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789919820
- NPI enumeration date
- July 4, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 255-5123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marissa M. Li practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota
Dr. Li's primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.
- Mayo Clinic Hospital, Saint Marys Campus1216 Second Street Southwest, Rochester, MN 55902 · Olmsted CountyPhone(507) 255-5123
Source: Dmand AI Affiliation Data
Dr. Marissa M. Li is affiliated with 2 sites of care and 1 medical group
Dr. Li's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Li to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marissa M. Li's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Li practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital, Saint Marys Campus | 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. Marissa M. Li is one of 213 hematologists and oncologists in Minnesota
Hematology and oncology is Dr. Li's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Li is licensed in Minnesota.
Specialties and state licenses
- Hematology and oncology, MinnesotaPrimary
Hematologists and oncologists near Dr. Li
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. Marissa M. Li billed Medicare for 54 services in 2024
CMS data shows 54 Medicare services from Dr. Li across 2 procedure codes in 2024, all of them office visits, for 39 Medicare patients. Medicare paid $5,793 for them. Every service was in an office.
Dr. Li's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 692024: 5422%
Dr. Li compared with the Minnesota median for hematologists and oncologists, 2024
- Dr. Li
- Minnesota median
- Medicare services
- 54vs 38486% below
- Medicare patients
- 39vs 15074% below
- Part D claims
- 28vs 32891% below
Medians across 209 hematologists and oncologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Li'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. Li and other hematologists and oncologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marissa M. Li treated 39 Medicare patients in 2024, average age 73
CMS counts 39 Medicare patients who saw Dr. Li in 2024. The largest group is 65 to 74, with 20 patients. 59% of them have high blood pressure, and 59% have high cholesterol. Their average risk score is 2.49, 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. Li's median patient age at 71, with 38% women.
Dr. Li's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Li's Medicare patients by sex, 2024
- Women2667%
- Men1333%
Chronic conditions among Dr. Li's Medicare patients, 2024
- High blood pressure59%
- High cholesterol59%
- Cancer51%
- Chronic kidney disease33%
- Ischemic heart disease33%
- Arthritis31%
- Atrial fibrillation28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Li's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women38%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marissa M. Li wrote 135 Medicare Part D claims in 2024
In 2024, Dr. Li wrote 135 Medicare Part D claims for 20 patients. 81% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $147 in total drug cost. In 2023, CMS named 54 claims across 4 drugs.
Dr. Li's Part D claims by kind of drug, 2024
- Generic109 claims81%
- Brand-name26 claims19%
Dr. Li'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: 542024: 2848%
Drugs named by CMS: 2 in 2024, 4 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
How Dr. Marissa M. Li takes part in Medicare
Dr. Li accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marissa M. Li has 4 publications on record
Dmand AI links 4 papers to Dr. Li, published from 2019 to 2025. Dr. Li's most frequent co-authors are Naseema Gangat, MBBS, Abhishek Avinash Mangaonkar and Ayalew Tefferi, MD.
Dr. Li's papers by year, 2019 to 2025
Dr. Li's most frequent co-authors
- Naseema Gangat, MBBS2 shared papers
- Abhishek Avinash Mangaonkar2 shared papers
- Ayalew Tefferi, MD2 shared papers
Recent publications by Dr. Li
See who Dr. Li researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Li works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marissa M. Li graduated from Northeastern Ohio University College of Medicine
Dr. Li graduated from Northeastern Ohio University College of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marissa M. Li'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 Data |
| Primary practice, affiliations and health system | Dmand 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Marissa M. Li
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. Marissa M. Li's NPI number?
Dr. Marissa M. Li's NPI number is 1437711959. It was assigned on July 4, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Marissa M. Li?
Dr. Marissa M. Li is a hematologist and oncologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Marissa M. Li practice?
Dr. Li practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Li's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Li to 1 hospice.
What is Dr. Marissa M. Li's office phone number?
The practice phone on file for Dr. Li is (507) 255-5123.
What is Dr. Marissa M. Li's medical license number?
Dr. Li holds Minnesota license 67767.
Which hospitals is Dr. Marissa M. Li affiliated with?
Dr. Li practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota.
What medical group is Dr. Marissa M. Li part of?
Dr. Li is linked to Mayo Clinic.
Does Dr. Marissa M. Li accept Medicare?
Yes. CMS data shows Dr. Li billed Medicare for 54 services in 2024, and Dr. Li accepts Medicare assignment.
How many Medicare patients does Dr. Marissa M. Li see?
CMS counts 39 Medicare patients who saw Dr. Li in 2024, with an average age of 73.
What services does Dr. Marissa M. Li bill to Medicare?
In 2024, Dr. Li's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99215).
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Where did Dr. Marissa M. Li go to medical school?
Dr. Li graduated from Northeastern Ohio University College of Medicine in 2019.
What drugs does Dr. Marissa M. Li prescribe most?
In 2024 Medicare Part D data, Dr. Li's most prescribed drugs by claims were Acyclovir and Duloxetine HCl.
How long has Dr. Marissa M. Li been practicing?
Dr. Li graduated from medical school in 2019, 7 years ago.
Does Dr. Marissa M. Li do research?
Dmand AI links 4 publications to Dr. Li, published from 2019 to 2025.
Who does Dr. Marissa M. Li publish with?
Dr. Li's most frequent co-authors are Naseema Gangat, MBBS (2 shared papers), Abhishek Avinash Mangaonkar (2 shared papers) and Ayalew Tefferi, MD (2 shared papers).
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