Dr. William Anthony Schaefer, MD
- Part D claims, 2024
- 963
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2022
- 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
Primary practice
Find Dr. 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.
Dr. William Anthony Schaefer is a family medicine physician in Grand Rapids, Michigan
Dr. Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Schaefer's NPI, 1356082333, was assigned on April 5, 2022. Dr. Schaefer holds Michigan license 4351049095.
- NPI
- 1356082333NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719366160
- NPI enumeration date
- April 5, 2022
- NPI status
- Active
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Anthony Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. 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
Dr. William Anthony Schaefer is affiliated with 1 site of care
Dr. Schaefer's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Anthony Schaefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. 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 |
Source: Dmand AI Technology Install Data
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Dr. William Anthony Schaefer is one of 4,931 family medicine physicians in Michigan
Family medicine is Dr. Schaefer's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Schaefer is licensed in Michigan.
Specialties and state licenses
- Family medicine, MichiganPrimary
Family medicine physicians near Dr. Schaefer
Counts of family medicine physicians 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. William Anthony Schaefer's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Schaefer's median patient age at 64, with 55% women.
Dr. 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 64
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. William Anthony Schaefer wrote 963 Medicare Part D claims in 2024
In 2024, Dr. Schaefer wrote 963 Medicare Part D claims for 155 patients. 81% of them were for generic drugs. CMS names the drug for 646 of them, across 30 drugs with 11 or more claims each, at $95,881 in total drug cost. In 2023, CMS named 125 claims across 8 drugs.
Dr. Schaefer's Part D claims by kind of drug, 2024
- Generic784 claims81%
- Brand-name and other179 claims19%
Dr. Schaefer'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.
Drug classes CMS tracks in Dr. Schaefer's Part D claims, 2024
- Opioids3%30 of 963 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1252024: 646417%
Drugs named by CMS: 30 in 2024, 8 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
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Sources for Dr. William Anthony 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 Data |
| 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) |
| 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. William Anthony 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 Dr. William Anthony Schaefer's NPI number?
Dr. William Anthony Schaefer's NPI number is 1356082333. It was assigned on April 5, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. William Anthony Schaefer?
Dr. William Anthony Schaefer is a family medicine physician in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Anthony Schaefer practice?
Dr. Schaefer practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Schaefer's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
What is Dr. William Anthony Schaefer's office phone number?
The practice phone on file for Dr. Schaefer is (616) 391-1774.
What is Dr. William Anthony Schaefer's medical license number?
Dr. Schaefer holds Michigan license 4351049095.
Which hospitals is Dr. William Anthony Schaefer affiliated with?
Dr. Schaefer practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan.
What drugs does Dr. William Anthony Schaefer prescribe most?
In 2024 Medicare Part D data, Dr. Schaefer's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Albuterol Sulfate Hfa.
How long has Dr. William Anthony Schaefer been practicing?
Dr. Schaefer's NPI was assigned in 2022.
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