Joseph J. Westerhof, PA
- Medicare patients, 2024
- 60
- Part D claims, 2024
- 63
- Hospital affiliations
- 2
- Industry payments
- $18
- Medical groups
- 3
- 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 Joseph Westerhof'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.
Joseph J. Westerhof is a physician assistant in Grand Rapids, Michigan
Joseph Westerhof practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Joseph Westerhof's NPI, 1306287859, was assigned on July 12, 2013. Joseph Westerhof holds Michigan license 5601007982.
- NPI
- 1306287859NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608006515
- NPI enumeration date
- July 12, 2013
- 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
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Joseph J. Westerhof practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Joseph Westerhof'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
Joseph J. Westerhof is affiliated with 5 sites of care and 3 medical groups
Joseph Westerhof's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Joseph Westerhof is also affiliated with University of Michigan Health-West Hospital. The medical group on file is Center for Physical Rehabilitation (CPR). Dmand AI also links Joseph Westerhof to 3 more group practices and clinics and 2 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 Joseph J. Westerhof's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joseph Westerhof practices, 5 sites in all. 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 |
| +4 more sites and 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.
Joseph J. Westerhof is one of 5,857 physician assistants in Michigan
Physician assistant is Joseph Westerhof's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Joseph Westerhof is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Joseph Westerhof
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
Joseph J. Westerhof treated 60 Medicare patients in 2024, average age 75
CMS counts 60 Medicare patients who saw Joseph Westerhof in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 73% have high cholesterol. Their average risk score is 1.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Joseph Westerhof's median patient age at 69, with 56% women.
Joseph Westerhof's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Joseph Westerhof's Medicare patients by sex, 2024
- Women4575%
- Men1525%
Chronic conditions among Joseph Westerhof's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis65%
- Anxiety50%
- Mood disorders50%
- Depression48%
- COPD37%
- Ischemic heart disease33%
Share of Medicare patients with each condition. A patient can have several.
Joseph Westerhof'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
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joseph J. Westerhof wrote 63 Medicare Part D claims in 2024
In 2024, Joseph Westerhof wrote 63 Medicare Part D claims for 49 patients. 98% of them were for generic drugs.
Joseph Westerhof's Part D claims by kind of drug, 2024
- Generic62 claims98%
- Brand-name and other1 claims2%
Drug classes CMS tracks in Joseph Westerhof's Part D claims, 2024
- Opioids57%36 of 63 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 Joseph J. Westerhof takes part in Medicare
Joseph Westerhof 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Joseph J. Westerhof received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Joseph Westerhof from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $18.
Companies that paid Joseph Westerhof 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 Joseph J. Westerhof'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) |
| 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 Joseph J. Westerhof
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joseph J. Westerhof's NPI number?
Joseph J. Westerhof's NPI number is 1306287859. It was assigned on July 12, 2013, and it is active in the NPI Registry.
What does Joseph J. Westerhof specialize in?
Joseph J. Westerhof is a physician assistant in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Joseph J. Westerhof practice?
Joseph Westerhof practices at 100 Michigan St NE, Grand Rapids, MI 49503. Joseph Westerhof's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Joseph Westerhof to 3 group practices and clinics and 2 medical groups.
What is Joseph J. Westerhof's office phone number?
The practice phone on file for Joseph Westerhof is (616) 391-1774.
What is Joseph J. Westerhof's medical license number?
Joseph Westerhof holds Michigan license 5601007982.
Which hospitals is Joseph J. Westerhof affiliated with?
Joseph Westerhof practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Joseph Westerhof is also affiliated with University of Michigan Health-West Hospital.
What medical group is Joseph J. Westerhof part of?
Joseph Westerhof is linked to Center for Physical Rehabilitation (CPR). Dmand AI links Joseph Westerhof to 2 more medical groups.
Does Joseph J. Westerhof accept Medicare?
Yes. CMS lists Joseph Westerhof as accepting Medicare assignment.
How many Medicare patients does Joseph J. Westerhof see?
CMS counts 60 Medicare patients who saw Joseph Westerhof in 2024, with an average age of 75.
Has Joseph J. Westerhof received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Joseph Westerhof from 1 company from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Joseph J. Westerhof been practicing?
Joseph Westerhof graduated from medical school in 2013, 13 years ago.
Selling to physician assistant practices?
See physician assistants in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card