Steven J. MacKay, PA-C
- Medicare services, 2024
- 57
- Medicare patients, 2024
- 53
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Industry payments
- $45
- Practice address
- 4500 San Pablo Rd, Jacksonville, FL 32224
- Practice phone
- Call (904) 953-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Steven MacKay's professional email, personal email and mobile number
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Steven J. MacKay is a physician assistant in Jacksonville, Florida
Steven MacKay practices at Mayo Clinic Hospital in Jacksonville, Florida, part of Mayo Clinic.
Steven MacKay's NPI, 1508300187, was assigned on December 15, 2016. Steven MacKay holds Florida license PA9115298.
- NPI
- 1508300187NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436435310
- NPI enumeration date
- December 15, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 953-2000
- 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)
Steven J. MacKay practices at Mayo Clinic Hospital in Jacksonville, Florida
Steven MacKay's primary practice is Mayo Clinic Hospital, at 4500 San Pablo Rd, Jacksonville, FL 32224 in Duval County. The practice phone is (904) 953-2000.
- Mayo Clinic Hospital4500 San Pablo Rd, Jacksonville, FL 32224 · Duval CountyPhone(904) 953-2000
Source: Dmand AI Affiliation Data
Steven J. MacKay is affiliated with 1 site of care and 2 medical groups
Steven MacKay's primary practice is Mayo Clinic Hospital in Jacksonville, Florida, part of Mayo Clinic. The medical group on file is Mayo Clinic Jacksonville. Dmand AI also links Steven MacKay 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 Steven J. MacKay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Steven MacKay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Steven J. MacKay is one of 7,899 physician assistants in Florida
Physician assistant is Steven MacKay's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Steven MacKay's licenses on file in 2 states: Florida and Pennsylvania.
Specialties and state licenses
- Physician assistant, FloridaPrimary
- Medical physician assistant, Pennsylvania
Physician assistants near Steven MacKay
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
Steven J. MacKay billed Medicare for 57 services in 2024
CMS data shows 57 Medicare services from Steven MacKay across 2 procedure codes in 2024, for 53 Medicare patients. Medicare paid $5,844 for them. Every service was in a facility, such as a hospital, rather than an office.
Steven MacKay's Medicare services by type, 2024
- Office and hospital visits37
- Surgery20
Steven MacKay compared with the Florida median for physician assistants, 2024
- Steven MacKay
- Florida median
- Medicare services
- 57vs 32182% below
- Medicare patients
- 53vs 13059% below
Medians across 5,430 physician assistants in Florida with Dmand AI profiles that report each measure.
Steven MacKay's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Steven J. MacKay treated 53 Medicare patients in 2024, average age 68
CMS counts 53 Medicare patients who saw Steven MacKay in 2024. The largest group is 65 to 74, with 25 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Steven MacKay's median patient age at 67, with 33% women.
Steven MacKay's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Steven MacKay's Medicare patients by sex, 2024
- Women1528%
- Men3872%
Chronic conditions among Steven MacKay's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Diabetes72%
- Heart failure72%
- Atrial fibrillation66%
- Chronic kidney disease58%
- COPD53%
Share of Medicare patients with each condition. A patient can have several.
Steven MacKay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women33%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Steven J. MacKay scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Steven MacKay for performance year 2024, reported as part of a group. Steven MacKay accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Steven MacKay's MIPS scores, performance year 2024
- 84of 100Final score
- 74.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Steven J. MacKay received $45 in industry payments in 2025
CMS Open Payments shows 1 general payment to Steven MacKay from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $45.
Companies that paid Steven MacKay 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 Steven J. MacKay'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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)Clinician Public Reporting: Overall MIPS Performance (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 Steven J. MacKay
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Steven J. MacKay's NPI number?
Steven J. MacKay's NPI number is 1508300187. It was assigned on December 15, 2016, and it is active in the NPI Registry.
What does Steven J. MacKay specialize in?
Steven J. MacKay is a physician assistant in Jacksonville, Florida. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Steven J. MacKay practice?
Steven MacKay practices at 4500 San Pablo Rd, Jacksonville, FL 32224. Steven MacKay's primary practice is Mayo Clinic Hospital in Jacksonville, Florida, part of Mayo Clinic. Dmand AI also links Steven MacKay to 1 medical group.
What is Steven J. MacKay's office phone number?
The practice phone on file for Steven MacKay is (904) 953-2000.
What is Steven J. MacKay's medical license number?
Steven MacKay holds Florida license PA9115298, one of the licenses on file in 2 states.
Which states has Steven J. MacKay been licensed in?
Dmand AI has state licenses on file for Steven MacKay in Florida and Pennsylvania.
Which hospitals is Steven J. MacKay affiliated with?
Steven MacKay practices at Mayo Clinic Hospital in Jacksonville, Florida.
What medical group is Steven J. MacKay part of?
Steven MacKay is linked to Mayo Clinic Jacksonville. Dmand AI links Steven MacKay to 1 more medical group.
Does Steven J. MacKay accept Medicare?
Yes. CMS data shows Steven MacKay billed Medicare for 57 services in 2024, and Steven MacKay accepts Medicare assignment.
What is Steven J. MacKay's MIPS score?
Steven MacKay's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Show 4 more questionsShow fewer questions
How many Medicare patients does Steven J. MacKay see?
CMS counts 53 Medicare patients who saw Steven MacKay in 2024, with an average age of 68.
What services does Steven J. MacKay bill to Medicare?
In 2024, Steven MacKay's most billed Medicare services were critical care (99291) and surgery: heart and blood vessels (36620).
Has Steven J. MacKay received payments from drug or device companies?
CMS Open Payments shows $45 in general payments to Steven MacKay from 1 company from 2025 to 2025. The largest total came from Abiomed.
How long has Steven J. MacKay been practicing?
Steven MacKay graduated from medical school in 2016, 10 years ago.
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