Marissa Claire Niemeyer, AGPCNP-C, MSN
- Medicare patients, 2024
- 146
- Part D claims, 2024
- 4,196
- Industry payments
- $241
- Affiliated sites
- 3
- Medical groups
- 3
- Practice address
- 15135 Whittaker Way Pvt, Grand Haven, MI 49417
- Practice phone
- Call (616) 267-1667
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Health Pointe
Grand Haven, Michigan
Find Marissa Niemeyer'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.
Marissa Claire Niemeyer is a gerontology nurse practitioner in Grand Haven, Michigan
Marissa Niemeyer practices at Health Pointe in Grand Haven, Michigan.
Marissa Niemeyer's NPI, 1003485194, was assigned on June 22, 2021. Marissa Niemeyer holds Michigan license 4704330088.
- NPI
- 1003485194NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901208040
- NPI enumeration date
- June 22, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 267-1667
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Marissa Claire Niemeyer practices at Health Pointe in Grand Haven, Michigan
Marissa Niemeyer's primary practice is Health Pointe, at 15135 Whittaker Way Pvt, Grand Haven, MI 49417 in Ottawa County. The practice phone is (616) 267-1667.
- Health Pointe15135 Whittaker Way Pvt, Grand Haven, MI 49417 · Ottawa CountyPhone(616) 267-1667
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Marissa Claire Niemeyer is affiliated with 4 sites of care and 3 medical groups
Marissa Niemeyer's primary practice is Health Pointe in Grand Haven, Michigan. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Marissa Niemeyer to 3 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Marissa Claire Niemeyer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marissa Niemeyer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Health Pointe | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Marissa Claire Niemeyer is one of 346 gerontology nurse practitioners in Michigan
Gerontology is Marissa Niemeyer's primary specialty in the NPI Registry, under taxonomy code 363LG0600X. Marissa Niemeyer is licensed in Michigan.
Specialties and state licenses
- Gerontology nurse practitioner, MichiganPrimary
Gerontology nurse practitioners near Marissa Niemeyer
Counts of gerontology nurse practitioners 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 Claire Niemeyer treated 146 Medicare patients in 2024, average age 78
CMS counts 146 Medicare patients who saw Marissa Niemeyer in 2024. The largest group is 85 and over, with 54 patients. 75% of them have high blood pressure, and 67% have mood disorders. 73% 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 Marissa Niemeyer's median patient age at 77, with 58% women.
Marissa Niemeyer's Medicare patients by age, 2024
Marissa Niemeyer's Medicare patients by sex, 2024
- Women8961%
- Men5739%
Chronic conditions among Marissa Niemeyer's Medicare patients, 2024
- High blood pressure75%
- Mood disorders67%
- High cholesterol65%
- Depression62%
- Alzheimer's and dementia60%
- Anxiety52%
- Arthritis50%
- Diabetes47%
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 77
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marissa Claire Niemeyer wrote 4,196 Medicare Part D claims in 2024
In 2024, Marissa Niemeyer wrote 4,196 Medicare Part D claims for 171 patients. 71% of them were for generic drugs.
Marissa Niemeyer's Part D claims by kind of drug, 2024
- Generic2,991 claims71%
- Brand-name and other1,205 claims29%
Drug classes CMS tracks in Marissa Niemeyer's Part D claims, 2024
- Opioids2%94 of 4,196 claims
- Antibiotics2%74 of 4,196 claims
- Antipsychotics, patients 65 and over4%167 of 4,196 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Marissa Claire Niemeyer takes part in Medicare
Marissa Niemeyer 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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Marissa Claire Niemeyer received $241 in industry payments in 2025
CMS Open Payments shows 2 general payments 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, $241.
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
Sources for Marissa Claire 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 | 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 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) |
| Part D prescribing | 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 Marissa Claire 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 Claire Niemeyer's NPI number?
Marissa Claire Niemeyer's NPI number is 1003485194. It was assigned on June 22, 2021, and it is active in the NPI Registry.
What does Marissa Claire Niemeyer specialize in?
Marissa Claire Niemeyer is a gerontology nurse practitioner in Grand Haven, Michigan. The primary specialty in the NPI Registry is Gerontology Nurse Practitioner (taxonomy code 363LG0600X).
Where does Marissa Claire Niemeyer practice?
Marissa Niemeyer practices at 15135 Whittaker Way Pvt, Grand Haven, MI 49417. Marissa Niemeyer's primary practice is Health Pointe in Grand Haven, Michigan. Dmand AI also links Marissa Niemeyer to 3 group practices and clinics and 2 medical groups.
What is Marissa Claire Niemeyer's office phone number?
The practice phone on file for Marissa Niemeyer is (616) 267-1667.
What is Marissa Claire Niemeyer's medical license number?
Marissa Niemeyer holds Michigan license 4704330088.
What medical group is Marissa Claire Niemeyer part of?
Marissa Niemeyer is linked to Corewell Health Medical Group West. Dmand AI links Marissa Niemeyer to 2 more medical groups.
Does Marissa Claire Niemeyer accept Medicare?
Yes. CMS lists Marissa Niemeyer as accepting Medicare assignment.
How many Medicare patients does Marissa Claire Niemeyer see?
CMS counts 146 Medicare patients who saw Marissa Niemeyer in 2024, with an average age of 78.
Has Marissa Claire Niemeyer received payments from drug or device companies?
CMS Open Payments shows $241 in general payments to Marissa Niemeyer from 1 company from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Marissa Claire Niemeyer been practicing?
Marissa Niemeyer graduated from medical school in 2021, 5 years ago.
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