Gregory Alexander Zilo, PA-C
- Medicare patients, 2024
- 160
- Part D claims, 2024
- 181
- MIPS score, 2024
- 97
- Hospital affiliations
- 1
- Medical groups
- 2
- 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 Gregory Zilo'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.
Gregory Alexander Zilo is a physician assistant in Grand Rapids, Michigan
Gregory Zilo practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Gregory Zilo's NPI, 1508303926, was assigned on January 24, 2017. Gregory Zilo holds Michigan license 5601008095.
- NPI
- 1508303926NPI Registry (opens in a new tab)
- NPI enumeration date
- January 24, 2017
- 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
Gregory Alexander Zilo practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Gregory Zilo'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
Gregory Alexander Zilo is affiliated with 1 site of care and 2 medical groups
Gregory Zilo's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. The medical group on file is Emergency Care Specialists (ECS). Dmand AI also links Gregory Zilo to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory Alexander Zilo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Zilo 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 |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Gregory Alexander Zilo is one of 5,857 physician assistants in Michigan
Physician assistant is Gregory Zilo's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Gregory Zilo is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Gregory Zilo
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
Gregory Alexander Zilo treated 160 Medicare patients in 2024, average age 68
CMS counts 160 Medicare patients who saw Gregory Zilo in 2024. The largest group is under 65, with 53 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 43% are also on Medicaid. Their average risk score is 1.80, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Gregory Zilo's median patient age at 38, with 57% women.
Gregory Zilo's Medicare patients by age, 2024
Gregory Zilo's Medicare patients by sex, 2024
- Women9962%
- Men6138%
Chronic conditions among Gregory Zilo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Anxiety51%
- Mood disorders47%
- Arthritis46%
- Depression41%
- Chronic kidney disease35%
- Diabetes33%
Share of Medicare patients with each condition. A patient can have several.
Gregory Zilo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory Alexander Zilo wrote 181 Medicare Part D claims in 2024
In 2024, Gregory Zilo wrote 181 Medicare Part D claims for 131 patients. 93% of them were for generic drugs.
Gregory Zilo's Part D claims by kind of drug, 2024
- Generic169 claims93%
- Brand-name12 claims7%
Drug classes CMS tracks in Gregory Zilo's Part D claims, 2024
- Antibiotics35%64 of 181 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
Gregory Alexander Zilo scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Gregory Zilo for performance year 2024, reported as part of a group.
Gregory Zilo's MIPS scores, performance year 2024
- 97of 100Final score
- 89.3of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Sources for Gregory Alexander Zilo'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 | Clinician Public Reporting: Overall MIPS Performance (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 Gregory Alexander Zilo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory Alexander Zilo's NPI number?
Gregory Alexander Zilo's NPI number is 1508303926. It was assigned on January 24, 2017, and it is active in the NPI Registry.
What does Gregory Alexander Zilo specialize in?
Gregory Alexander Zilo is a physician assistant in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Gregory Alexander Zilo practice?
Gregory Zilo practices at 100 Michigan St NE, Grand Rapids, MI 49503. Gregory Zilo's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Gregory Zilo to 1 medical group.
What is Gregory Alexander Zilo's office phone number?
The practice phone on file for Gregory Zilo is (616) 391-1774.
What is Gregory Alexander Zilo's medical license number?
Gregory Zilo holds Michigan license 5601008095.
Which hospitals is Gregory Alexander Zilo affiliated with?
Gregory Zilo practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan.
What medical group is Gregory Alexander Zilo part of?
Gregory Zilo is linked to Emergency Care Specialists (ECS). Dmand AI links Gregory Zilo to 1 more medical group.
What is Gregory Alexander Zilo's MIPS score?
Gregory Zilo's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Gregory Alexander Zilo see?
CMS counts 160 Medicare patients who saw Gregory Zilo in 2024, with an average age of 68.
How long has Gregory Alexander Zilo been practicing?
Gregory Zilo's NPI was assigned in 2017.
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