Marissa A. Schaefer, PA
- Medicare patients, 2024
- 15
- Hospital affiliations
- 1
- Medical groups
- 3
- State license
- 1
- Year NPI issued
- 2011
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Marissa Schaefer'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 A. Schaefer is a physician assistant in Grand Rapids, Michigan
Marissa Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Marissa Schaefer's NPI, 1508144544, was assigned on July 25, 2011. Marissa Schaefer holds Michigan license 5601006554.
- NPI
- 1508144544NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294902300
- NPI enumeration date
- July 25, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marissa A. Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Marissa Schaefer's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Marissa A. Schaefer is affiliated with 1 site of care and 3 medical groups
Marissa Schaefer's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Marissa Schaefer to 2 more medical groups, 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 A. Schaefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marissa Schaefer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +2 medical groups | 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 Corewell Health and 6.2K+ hospitals, with verified contacts in the same login.
Marissa A. Schaefer is one of 5,857 physician assistants in Michigan
Physician assistant is Marissa Schaefer's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Marissa Schaefer is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Marissa Schaefer
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 A. Schaefer treated 15 Medicare patients in 2024, average age 70
CMS counts 15 Medicare patients who saw Marissa Schaefer in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.76, 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 Schaefer's median patient age at 68, with 58% women.
Chronic conditions among Marissa Schaefer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Marissa Schaefer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women58%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Marissa A. Schaefer takes part in Medicare
Marissa Schaefer 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)
Sources for Marissa A. Schaefer'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) |
| 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 A. Schaefer
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 A. Schaefer's NPI number?
Marissa A. Schaefer's NPI number is 1508144544. It was assigned on July 25, 2011, and it is active in the NPI Registry.
What does Marissa A. Schaefer specialize in?
Marissa A. Schaefer is a physician assistant in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Marissa A. Schaefer practice?
Marissa Schaefer practices at 100 Michigan St NE, Grand Rapids, MI 49503. Marissa Schaefer's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Marissa Schaefer to 2 medical groups.
What is Marissa A. Schaefer's office phone number?
The practice phone on file for Marissa Schaefer is (616) 391-1774.
What is Marissa A. Schaefer's medical license number?
Marissa Schaefer holds Michigan license 5601006554.
Which hospitals is Marissa A. Schaefer affiliated with?
Marissa Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan.
What medical group is Marissa A. Schaefer part of?
Marissa Schaefer is linked to Corewell Health Medical Group West. Dmand AI links Marissa Schaefer to 2 more medical groups.
Does Marissa A. Schaefer accept Medicare?
Yes. CMS lists Marissa Schaefer as accepting Medicare assignment.
How many Medicare patients does Marissa A. Schaefer see?
CMS counts 15 Medicare patients who saw Marissa Schaefer in 2024, with an average age of 70.
How long has Marissa A. Schaefer been practicing?
Marissa Schaefer graduated from medical school in 2011, 15 years ago.
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