Dr. Gregory Davis MacKay, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 32
- Part D claims, 2022
- 176
- MIPS score, 2024
- 92
- Industry payments
- $298
- Practice address
- 1000 36th St, Vero Beach, FL 32960
- Practice phone
- Call (772) 567-4311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cleveland Clinic Indian River Hospital
Vero Beach, Florida
Find Dr. MacKay'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. Gregory Davis MacKay is a gastroenterologist in Vero Beach, Florida
Dr. MacKay practices at Cleveland Clinic Indian River Hospital in Vero Beach, Florida.
Dr. MacKay's NPI, 1346277613, was assigned on June 26, 2006. Dr. MacKay graduated from Sidney Kimmel Medical College in 1985. Dr. MacKay holds Florida license ME 60347.
- NPI
- 1346277613NPI Registry (opens in a new tab)
- NPI enumeration date
- June 26, 2006
- NPI status
- Active
- Practice phone
- (772) 567-4311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gregory Davis MacKay practices at Cleveland Clinic Indian River Hospital in Vero Beach, Florida
Dr. MacKay's primary practice is Cleveland Clinic Indian River Hospital, at 1000 36th St, Vero Beach, FL 32960 in Indian River County. The practice phone is (772) 567-4311.
- Cleveland Clinic Indian River Hospital1000 36th St, Vero Beach, FL 32960 · Indian River CountyPhone(772) 567-4311
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Davis MacKay is affiliated with 2 sites of care and 1 medical group
Dr. MacKay's primary practice is Cleveland Clinic Indian River Hospital in Vero Beach, Florida. The medical group on file is Cleveland Clinic Indian River Hospital. Dmand AI also links Dr. MacKay to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory Davis MacKay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. MacKay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cleveland Clinic Indian River Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Davis MacKay is one of 1,364 gastroenterologists in Florida
Gastroenterology is Dr. MacKay's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. MacKay is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. MacKay's licenses on file in 2 states: Florida and North Carolina.
Specialties and state licenses
- Gastroenterology, FloridaPrimary
- North Carolina license
Clinical focus
Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. MacKay treats.
Gastroenterologists near Dr. MacKay
Counts of gastroenterologists 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. Gregory Davis MacKay billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. MacKay across 1 procedure code in 2024, for 32 Medicare patients. Medicare paid $1,335 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. MacKay's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 402024: 2245%
Dr. MacKay compared with the Florida median for gastroenterologists, 2024
- Dr. MacKay
- Florida median
- Medicare services
- 22vs 58296% below
- Medicare patients
- 32vs 32290% below
- Part D claims
- 176vs 50265% below
Medians across 1,320 gastroenterologists in Florida with Dmand AI profiles that report each measure.
Dr. 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. MacKay and other gastroenterologists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Davis MacKay treated 32 Medicare patients in 2024, average age 77
CMS counts 32 Medicare patients who saw Dr. MacKay in 2024. The largest group is 75 to 84, with 13 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. MacKay's median patient age at 62, with 60% women.
Dr. MacKay's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. MacKay's Medicare patients by sex, 2024
- Women2063%
- Men1238%
Chronic conditions among Dr. MacKay's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis69%
- Anxiety63%
- Depression63%
- Mood disorders63%
- Chronic kidney disease56%
- Heart failure56%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 62
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Davis MacKay wrote 176 Medicare Part D claims in 2022
In 2022, Dr. MacKay wrote 176 Medicare Part D claims. They cover 5 drugs, with $15,687 in total drug cost. In 2021, CMS named 1,462 claims across 32 drugs.
Dr. MacKay's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 1,4622022: 17688%
Drugs named by CMS: 5 in 2022, 32 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Gregory Davis MacKay scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. MacKay for performance year 2024, reported through an alternative payment model (APM).
Dr. MacKay's MIPS scores, performance year 2024
- 92of 100Final score
- 80.2of 100Quality
- 99of 100Promoting Interoperability
- 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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Dr. Gregory Davis MacKay received $298 in industry payments from 2017 to 2019
CMS Open Payments shows 4 general payments to Dr. MacKay from 4 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $119.
General payments to Dr. MacKay by program year, 2017 to 2019
Companies that paid Dr. MacKay the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Davis MacKay has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. MacKay, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. MacKay
- 2013
- CMS Stage 1 EHR
- 2010
- AGA Fellow
- Undated
- ACG Fellow
Source: Dmand AI Professional Profile Data
Dr. Gregory Davis MacKay graduated from Sidney Kimmel Medical College
Dr. MacKay graduated from Sidney Kimmel Medical College in 1985. Dr. MacKay is a member of ACG and AGA.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory Davis MacKay accepts plans from 10 insurance carriers
Dr. MacKay is in network with 10 carriers, including Elevance, Excellus BlueCross BlueShield and Aetna. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Excellus BlueCross BlueShield
- Aetna
- Cigna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- +2 more carriersWith a free account
Plan types Dr. MacKay accepts, by number of carriers
- Medicare7
- PPO7
- HMO5
- POS4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory Davis 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. Gregory Davis 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 Dr. Gregory Davis MacKay's NPI number?
Dr. Gregory Davis MacKay's NPI number is 1346277613. It was assigned on June 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Davis MacKay?
Dr. Gregory Davis MacKay is a gastroenterologist in Vero Beach, Florida. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gregory Davis MacKay practice?
Dr. MacKay practices at 1000 36th St, Vero Beach, FL 32960. Dr. MacKay's primary practice is Cleveland Clinic Indian River Hospital in Vero Beach, Florida. Dmand AI also links Dr. MacKay to 1 group practice or clinic.
What is Dr. Gregory Davis MacKay's office phone number?
The practice phone on file for Dr. MacKay is (772) 567-4311.
What is Dr. Gregory Davis MacKay's medical license number?
Dr. MacKay holds Florida license ME 60347, one of the licenses on file in 2 states.
Which states has Dr. Gregory Davis MacKay been licensed in?
Dmand AI has state licenses on file for Dr. MacKay in Florida (1991 to 2027) and North Carolina (1989 to 1995).
What medical group is Dr. Gregory Davis MacKay part of?
Dr. MacKay is linked to Cleveland Clinic Indian River Hospital.
Does Dr. Gregory Davis MacKay accept Medicare?
Yes. CMS data shows Dr. MacKay billed Medicare for 22 services in 2024.
What is Dr. Gregory Davis MacKay's MIPS score?
Dr. MacKay's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Gregory Davis MacKay see?
CMS counts 32 Medicare patients who saw Dr. MacKay in 2024, with an average age of 77.
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Is Dr. Gregory Davis MacKay board certified?
Yes. Dr. MacKay is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Gregory Davis MacKay bill to Medicare?
In 2024, Dr. MacKay's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Gregory Davis MacKay go to medical school?
Dr. MacKay graduated from Sidney Kimmel Medical College in 1985.
What drugs does Dr. Gregory Davis MacKay prescribe most?
In 2022 Medicare Part D data, Dr. MacKay's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Lubiprostone.
Has Dr. Gregory Davis MacKay received payments from drug or device companies?
CMS Open Payments shows $298 in general payments to Dr. MacKay from 4 companies from 2017 to 2019. The largest total came from Boston Scientific Corporation.
How long has Dr. Gregory Davis MacKay been practicing?
Dr. MacKay graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Gregory Davis MacKay accept?
Dr. MacKay is in network with 10 carriers, including Elevance, Excellus BlueCross BlueShield and Aetna. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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