Marissa Marie Maier
- Medicare services, 2021
- 13
- Medicare patients, 2024
- 14
- Publications
- 34
- MIPS score, 2024
- 99
- Hospital affiliations
- 1
- Practice address
- 3181 SW Sam Jackson Park Road, Portland, OR 97239
- Practice phone
- Call (503) 494-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Marissa Maier's professional email, personal email and mobile number
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Marissa Marie Maier is an infectious disease specialist in Portland, Oregon
Marissa Maier practices at OHSU Hospital in Portland, Oregon, part of State of Oregon.
Marissa Maier's NPI, 1346446119, was assigned on June 26, 2007. Marissa Maier graduated from University of California, San Francisco School of Medicine in 2007. Marissa Maier holds Oregon license 150654.
- NPI
- 1346446119NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618127556
- NPI enumeration date
- June 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 494-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marissa Marie Maier practices at OHSU Hospital in Portland, Oregon
Marissa Maier's primary practice is OHSU Hospital, at 3181 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (503) 494-9000.
- OHSU Hospital3181 SW Sam Jackson Park Road, Portland, OR 97239 · Multnomah CountyPhone(503) 494-9000
Source: Dmand AI Affiliation Data
Marissa Marie Maier is affiliated with 2 sites of care and 1 medical group
Marissa Maier's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. The medical group on file is Oregon Health & Science University (OHSU). Dmand AI also links Marissa Maier to 1 more clinical lab, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marissa Marie Maier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marissa Maier practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OHSU Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Marissa Marie Maier is one of 101 infectious disease specialists in Oregon
Infectious disease is Marissa Maier's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Marissa Maier is licensed in Oregon.
Specialties and state licenses
- Infectious disease, OregonPrimary
Infectious disease specialists near Marissa Maier
Counts of infectious disease specialists 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
Marissa Marie Maier billed Medicare for 13 services in 2021
CMS data shows 13 Medicare services from Marissa Maier across 1 procedure code in 2021, for 14 Medicare patients. Medicare paid $1,442 for them. Every service was in a facility, such as a hospital, rather than an office.
Marissa Maier's Medicare services by type, 2019 to 2021
- 2019
- 2021
- Office and hospital visits
- 2019: 122021: 138%
Marissa Maier compared with the Oregon median for infectious disease specialists, 2021
- Marissa Maier
- Oregon median
- Medicare services
- 13vs 15592% below
- Medicare patients
- 14vs 9084% below
Medians across 103 infectious disease specialists in Oregon with Dmand AI profiles that report each measure.
Marissa Maier's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Marissa Maier?
Medicare shows one payer. Book a meeting to get commercial claims data for Marissa Maier and other infectious disease specialists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Marissa Marie Maier treated 14 Medicare patients in 2024, average age 67
CMS counts 14 Medicare patients who saw Marissa Maier in 2024. 75% of them have depression, and 75% have high blood pressure. Their average risk score is 3.43, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Marissa Maier's median patient age at 69, with 29% women.
Chronic conditions among Marissa Maier's Medicare patients, 2024
- Depression75%
- High blood pressure75%
- Mood disorders75%
Share of Medicare patients with each condition. A patient can have several.
Marissa Maier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women29%
- Men71%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marissa Marie Maier scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Marissa Maier for performance year 2024, reported through an alternative payment model (APM). Marissa Maier accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Marissa Maier's MIPS scores, performance year 2024
- 99of 100Final score
- 84.3of 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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Marissa Marie Maier has 34 publications on record
Dmand AI links 34 papers to Marissa Maier, published from 2014 to 2025. 2022 was the busiest year, with 5. The most frequent topics are HIV Infections, Veterans Health and Veterans. Marissa Maier has published most often in Open Forum Infect Dis. Marissa Maier's most frequent co-authors are Michael E. Ohl, MD, David B. Ross, MD and Timothy R. Morgan, MD.
Marissa Maier's papers by year, 2014 to 2025
Topics Marissa Maier writes about most
- HIV Infections
- Veterans Health
- Veterans
- Antiviral Agents
- Pre-Exposure Prophylaxis
- United States Department of Veterans Affairs
- Gonorrhea
- Hepacivirus
Marissa Maier's most frequent co-authors
- Michael E. Ohl, MD10 shared papers
- David B. Ross, MD10 shared papers
- Timothy R. Morgan, MD9 shared papers
Recent publications by Marissa Maier
See who Marissa Maier researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Marissa Maier works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Marissa Marie Maier received $200 in industry payments in 2025
CMS Open Payments shows 1 general payment to Marissa Maier from 1 drug or device company in 2025. Education make up the largest share, 100% of the total. Solventum Corporation paid the most, $200.
Companies that paid Marissa Maier the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Marissa Marie Maier graduated from University of California, San Francisco School of Medicine
Marissa Maier graduated from University of California, San Francisco School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Marissa Marie Maier'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) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Marissa Marie Maier
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marissa Marie Maier's NPI number?
Marissa Marie Maier's NPI number is 1346446119. It was assigned on June 26, 2007, and it is active in the NPI Registry.
What does Marissa Marie Maier specialize in?
Marissa Marie Maier is an infectious disease specialist in Portland, Oregon. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Marissa Marie Maier practice?
Marissa Maier practices at 3181 SW Sam Jackson Park Road, Portland, OR 97239. Marissa Maier's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dmand AI also links Marissa Maier to 1 clinical lab.
What is Marissa Marie Maier's office phone number?
The practice phone on file for Marissa Maier is (503) 494-9000.
What is Marissa Marie Maier's medical license number?
Marissa Maier holds Oregon license 150654.
Which hospitals is Marissa Marie Maier affiliated with?
Marissa Maier practices at OHSU Hospital in Portland, Oregon.
What medical group is Marissa Marie Maier part of?
Marissa Maier is linked to Oregon Health & Science University (OHSU).
Does Marissa Marie Maier accept Medicare?
Yes. CMS data shows Marissa Maier billed Medicare for 13 services in 2021, and Marissa Maier accepts Medicare assignment.
What is Marissa Marie Maier's MIPS score?
Marissa Maier's MIPS final score for performance year 2024 is 99 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Marissa Marie Maier see?
CMS counts 14 Medicare patients who saw Marissa Maier in 2024, with an average age of 67.
Show 6 more questionsShow fewer questions
What services does Marissa Marie Maier bill to Medicare?
In 2021, Marissa Maier's most billed Medicare services were hospital inpatient care (99222).
Where did Marissa Marie Maier go to medical school?
Marissa Maier graduated from University of California, San Francisco School of Medicine in 2007.
Has Marissa Marie Maier received payments from drug or device companies?
CMS Open Payments shows $200 in general payments to Marissa Maier from 1 company from 2025 to 2025. The largest total came from Solventum Corporation.
How long has Marissa Marie Maier been practicing?
Marissa Maier graduated from medical school in 2007, 19 years ago.
Does Marissa Marie Maier do research?
Dmand AI links 34 publications to Marissa Maier, published from 2014 to 2025.
Who does Marissa Marie Maier publish with?
Marissa Maier's most frequent co-authors are Michael E. Ohl, MD (10 shared papers), David B. Ross, MD (10 shared papers) and Timothy R. Morgan, MD (9 shared papers).
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