Ross D. Kooienga, PA-C
- Medicare patients, 2024
- 151
- Part D claims, 2024
- 229
- Hospital affiliations
- 2
- Medical group
- 1
- State license
- 1
- 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 Ross Kooienga'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.
Ross D. Kooienga is a physician assistant in Grand Rapids, Michigan
Ross Kooienga practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Ross Kooienga's NPI, 1992158745, was assigned on July 18, 2016.
- NPI
- 1992158745NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820386972
- NPI enumeration date
- July 18, 2016
- 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
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ross D. Kooienga practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Ross Kooienga'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
Ross D. Kooienga is affiliated with 2 sites of care and 1 medical group
Ross Kooienga's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Ross Kooienga is also affiliated with Corewell Health Big Rapids Hospital. The medical group on file is Corewell Health Medical Group West.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Ross D. Kooienga's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ross Kooienga practices, 2 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 |
| +1 more affiliated site | 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.
Ross D. Kooienga is one of 5,857 physician assistants in Michigan
Physician assistant is Ross Kooienga's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Ross Kooienga
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
Ross D. Kooienga treated 151 Medicare patients in 2024, average age 74
CMS counts 151 Medicare patients who saw Ross Kooienga in 2024. The largest group is 75 to 84, with 48 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Ross Kooienga's median patient age at 68, with 52% women.
Ross Kooienga's Medicare patients by age, 2024
Ross Kooienga's Medicare patients by sex, 2024
- Women6946%
- Men8254%
Chronic conditions among Ross Kooienga's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Mood disorders54%
- Anxiety52%
- Depression50%
- Chronic kidney disease44%
- Diabetes43%
Share of Medicare patients with each condition. A patient can have several.
Ross Kooienga'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
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ross D. Kooienga wrote 229 Medicare Part D claims in 2024
In 2024, Ross Kooienga wrote 229 Medicare Part D claims for 103 patients. 93% of them were for generic drugs.
Ross Kooienga's Part D claims by kind of drug, 2024
- Generic212 claims93%
- Brand-name17 claims7%
Drug classes CMS tracks in Ross Kooienga's Part D claims, 2024
- Opioids10%22 of 229 claims
- Antibiotics21%48 of 229 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 Ross D. Kooienga takes part in Medicare
Ross Kooienga 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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Sources for Ross D. Kooienga'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) |
| 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 Ross D. Kooienga
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ross D. Kooienga's NPI number?
Ross D. Kooienga's NPI number is 1992158745. It was assigned on July 18, 2016, and it is active in the NPI Registry.
What does Ross D. Kooienga specialize in?
Ross D. Kooienga is a physician assistant in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Ross D. Kooienga practice?
Ross Kooienga practices at 100 Michigan St NE, Grand Rapids, MI 49503. Ross Kooienga's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
What is Ross D. Kooienga's office phone number?
The practice phone on file for Ross Kooienga is (616) 391-1774.
Which hospitals is Ross D. Kooienga affiliated with?
Ross Kooienga practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Ross Kooienga is also affiliated with Corewell Health Big Rapids Hospital.
What medical group is Ross D. Kooienga part of?
Ross Kooienga is linked to Corewell Health Medical Group West.
Does Ross D. Kooienga accept Medicare?
Yes. CMS lists Ross Kooienga as accepting Medicare assignment.
How many Medicare patients does Ross D. Kooienga see?
CMS counts 151 Medicare patients who saw Ross Kooienga in 2024, with an average age of 74.
How long has Ross D. Kooienga been practicing?
Ross Kooienga graduated from medical school in 2016, 10 years ago.
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