Marissa Catherine Niemeyer, PA-C
- Medicare patients, 2024
- 28
- MIPS score, 2024
- 83
- Hospital affiliations
- 4
- Industry payments
- $164
- Medical group
- 1
- Practice address
- 1701 North George Mason Drive, Arlington, VA 22205
- Practice phone
- Call (703) 558-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Marissa Niemeyer's professional email, personal email and mobile number
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Marissa Catherine Niemeyer is a physician assistant in Arlington, Virginia
Marissa Niemeyer practices at VHC Health in Arlington, Virginia, part of VHC Health.
Marissa Niemeyer's NPI, 1376019786, was assigned on October 23, 2018. Marissa Niemeyer graduated from Duke University School of Medicine in 2018. Marissa Niemeyer holds Virginia license 0110007561.
- NPI
- 1376019786NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537493986
- NPI enumeration date
- October 23, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 558-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marissa Catherine Niemeyer practices at VHC Health in Arlington, Virginia
Marissa Niemeyer's primary practice is VHC Health, at 1701 North George Mason Drive, Arlington, VA 22205 in Arlington County. The practice phone is (703) 558-5000.
- VHC Health1701 North George Mason Drive, Arlington, VA 22205 · Arlington CountyPhone(703) 558-5000
Source: Dmand AI Affiliation Data
Marissa Catherine Niemeyer is affiliated with 4 sites of care and 1 medical group
Marissa Niemeyer's primary practice is VHC Health in Arlington, Virginia, part of VHC Health. Marissa Niemeyer is also affiliated with Inova Fairfax Hospital. The medical group on file is Inova Urgent Care Center. Dmand AI also links Marissa Niemeyer to 2 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marissa Catherine Niemeyer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marissa Niemeyer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| VHC Health | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across VHC Health and 6.2K+ hospitals, with verified contacts in the same login.
Marissa Catherine Niemeyer is one of 3,636 physician assistants in Virginia
Physician assistant is Marissa Niemeyer's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Marissa Niemeyer's licenses on file in 2 states: Virginia and South Carolina.
Specialties and state licenses
- Physician assistant, VirginiaPrimary
- South Carolina license
Physician assistants near Marissa Niemeyer
Counts of physician assistants 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 Catherine Niemeyer treated 28 Medicare patients in 2024, average age 81
CMS counts 28 Medicare patients who saw Marissa Niemeyer in 2024. The largest group is 75 to 84, with 12 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.11, 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 Niemeyer's median patient age at 59, with 57% women.
Marissa Niemeyer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Marissa Niemeyer's Medicare patients by sex, 2024
- Women1139%
- Men1761%
Chronic conditions among Marissa Niemeyer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA75%
- Arthritis57%
- Atrial fibrillation57%
- Heart failure54%
- Ischemic heart disease54%
- Chronic kidney disease43%
Share of Medicare patients with each condition. A patient can have several.
Marissa Niemeyer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marissa Catherine Niemeyer scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Marissa Niemeyer for performance year 2024, reported as part of a group. Marissa Niemeyer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Marissa Niemeyer's MIPS scores, performance year 2024
- 83of 100Final score
- 73of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
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
Marissa Catherine Niemeyer received $164 in industry payments in 2025
CMS Open Payments shows 1 general payment to Marissa Niemeyer from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $164.
Companies that paid Marissa Niemeyer 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 Catherine Niemeyer graduated from Duke University School of Medicine
Marissa Niemeyer graduated from Duke University School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Marissa Catherine Niemeyer'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 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) |
| 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 Catherine Niemeyer
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 Catherine Niemeyer's NPI number?
Marissa Catherine Niemeyer's NPI number is 1376019786. It was assigned on October 23, 2018, and it is active in the NPI Registry.
What does Marissa Catherine Niemeyer specialize in?
Marissa Catherine Niemeyer is a physician assistant in Arlington, Virginia. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Marissa Catherine Niemeyer practice?
Marissa Niemeyer practices at 1701 North George Mason Drive, Arlington, VA 22205. Marissa Niemeyer's primary practice is VHC Health in Arlington, Virginia, part of VHC Health. Dmand AI also links Marissa Niemeyer to 2 hospitals.
What is Marissa Catherine Niemeyer's office phone number?
The practice phone on file for Marissa Niemeyer is (703) 558-5000.
What is Marissa Catherine Niemeyer's medical license number?
Marissa Niemeyer holds Virginia license 0110007561, one of the licenses on file in 2 states.
Which states has Marissa Catherine Niemeyer been licensed in?
Dmand AI has state licenses on file for Marissa Niemeyer in Virginia and South Carolina.
Which hospitals is Marissa Catherine Niemeyer affiliated with?
Marissa Niemeyer practices at VHC Health in Arlington, Virginia. Marissa Niemeyer is also affiliated with Inova Fairfax Hospital. Dmand AI links Marissa Niemeyer to 2 more hospitals.
What medical group is Marissa Catherine Niemeyer part of?
Marissa Niemeyer is linked to Inova Urgent Care Center.
Does Marissa Catherine Niemeyer accept Medicare?
Yes. CMS lists Marissa Niemeyer as accepting Medicare assignment.
What is Marissa Catherine Niemeyer's MIPS score?
Marissa Niemeyer's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
Show 4 more questionsShow fewer questions
How many Medicare patients does Marissa Catherine Niemeyer see?
CMS counts 28 Medicare patients who saw Marissa Niemeyer in 2024, with an average age of 81.
Where did Marissa Catherine Niemeyer go to medical school?
Marissa Niemeyer graduated from Duke University School of Medicine in 2018.
Has Marissa Catherine Niemeyer received payments from drug or device companies?
CMS Open Payments shows $164 in general payments to Marissa Niemeyer from 1 company from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Marissa Catherine Niemeyer been practicing?
Marissa Niemeyer graduated from medical school in 2018, 8 years ago.
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