Dr. Greg J. Jun, MD
- Medicare services, 2020
- 181
- Part D claims, 2024
- 7,548
- Industry payments
- $1,803
- Affiliated sites
- 3
- Medical groups
- 6
- Practice address
- 5611 St, Zephyrhills, FL 33542
- Practice phone
- Call (800) 877-5227
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Laboratory Corporation of America
Zephyrhills, Florida
Find Dr. Jun'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. Greg J. Jun is an internist in Zephyrhills, Florida
Dr. Jun practices at Laboratory Corporation of America in Zephyrhills, Florida.
Dr. Jun's NPI, 1043212780, was assigned on August 12, 2005. Dr. Jun graduated from Feinberg School of Medicine in 1997. Dr. Jun holds Florida license ME144859.
- NPI
- 1043212780NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315917606
- NPI enumeration date
- August 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (800) 877-5227
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Greg J. Jun practices at Laboratory Corporation of America in Zephyrhills, Florida
Dr. Jun's primary practice is Laboratory Corporation of America, at 5611 St, Zephyrhills, FL 33542 in Pasco County. The practice phone is (800) 877-5227.
- Laboratory Corporation of America5611 St, Zephyrhills, FL 33542 · Pasco CountyPhone(800) 877-5227
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Greg J. Jun is affiliated with 4 sites of care and 6 medical groups
Dr. Jun's primary practice is Laboratory Corporation of America in Zephyrhills, Florida. The medical group on file is Legacy Healthcare Services. Dmand AI also links Dr. Jun to 5 more medical groups, 2 group practices and clinics and 1 therapy and rehab clinic, each 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. Greg J. Jun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Jun practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Laboratory Corporation of America | Available with a free account |
| +3 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Greg J. Jun is one of 9,009 internists in Florida
Internal medicine is Dr. Jun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Jun is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Jun's licenses on file in 2 states: Florida and Illinois.
Specialties and state licenses
- Internal medicine, FloridaPrimary
- Illinois license
Clinical focus
Dmand AI lists asthma, chronic hypertension, chronic kidney disease, congestive heart failure, high cholesterol, kidney failure, obesity and sleep apnea among the conditions Dr. Jun treats.
Internists near Dr. Jun
Counts of internists 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. Greg J. Jun billed Medicare for 181 services in 2020
CMS data shows 181 Medicare services from Dr. Jun across 5 procedure codes in 2020. Medicare paid $10,294 for them.
Dr. Jun's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 7972020: 17079%
- Other services
- 2019: 2312020: 1195%
- Tests and treatments
- 2019: 1222020: 0100%
Where Dr. Jun's Medicare services took place, 2020
- In an office10558%
- In a facility7642%
Dr. Jun compared with the Florida median for internists, 2020
- Dr. Jun
- Florida median
- Medicare services
- 181vs 55567% below
- Part D claims
- 6,778vs 46614.5 times
Medians across 8,488 internists in Florida with Dmand AI profiles that report each measure.
Dr. Jun's most billed Medicare procedure codes, 2020
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. Jun and other internists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Greg J. Jun's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Jun's median patient age at 74, with 41% women.
Dr. Jun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women41%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Greg J. Jun wrote 7,548 Medicare Part D claims in 2024
In 2024, Dr. Jun wrote 7,548 Medicare Part D claims for 694 patients. 87% of them were for generic drugs. CMS names the drug for 6,778 of them, across 108 drugs with 11 or more claims each, at $539,294 in total drug cost. In 2023, CMS named 7,103 claims across 102 drugs.
Dr. Jun's Part D claims by kind of drug, 2024
- Generic6,581 claims87%
- Brand-name952 claims13%
- Other15 claims0%
Dr. Jun's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Jun's Part D claims, 2024
- Opioids1%70 of 7,548 claims
- Antibiotics1%77 of 7,548 claims
- Antipsychotics, patients 65 and over0%19 of 7,548 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7,1032024: 6,7785%
Drugs named by CMS: 108 in 2024, 102 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Greg J. Jun takes part in Medicare
Dr. Jun 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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Dr. Greg J. Jun received $1,803 in industry payments from 2016 to 2025
CMS Open Payments shows 82 general payments to Dr. Jun from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $432.
General payments to Dr. Jun by program year, 2016 to 2025
General payments to Dr. Jun by kind, 2016 to 2025
- Food and beverage$1,798100%
- Education$50%
Companies that paid Dr. Jun the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Greg J. Jun has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Jun, most recently NCQA DRP in 2016.
Awards and honors for Dr. Jun
- 2016
- NCQA DRP
- 2013
- CMS Stage 1 EHR
- Undated
- Bridges to Excellence
Source: Dmand AI Professional Profile Data
Dr. Greg J. Jun graduated from Feinberg School of Medicine
Dr. Jun graduated from Feinberg School of Medicine in 1997. Dr. Jun is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Greg J. Jun accepts plans from 17 insurance carriers
Dr. Jun is in network with 17 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- Aetna
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. Jun accepts, by number of carriers
- PPO11
- HMO8
- Medicare8
- POS4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Greg J. Jun'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| 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. Greg J. Jun
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. Greg J. Jun's NPI number?
Dr. Greg J. Jun's NPI number is 1043212780. It was assigned on August 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Greg J. Jun?
Dr. Greg J. Jun is an internist in Zephyrhills, Florida. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Greg J. Jun practice?
Dr. Jun practices at 5611 St, Zephyrhills, FL 33542. Dr. Jun's primary practice is Laboratory Corporation of America in Zephyrhills, Florida. Dmand AI also links Dr. Jun to 5 medical groups, 2 group practices and clinics and 1 therapy and rehab clinic.
What is Dr. Greg J. Jun's office phone number?
The practice phone on file for Dr. Jun is (800) 877-5227.
What is Dr. Greg J. Jun's medical license number?
Dr. Jun holds Florida license ME144859, one of the licenses on file in 2 states.
Which states has Dr. Greg J. Jun been licensed in?
Dmand AI has state licenses on file for Dr. Jun in Florida (2020 to 2026) and Illinois (2001 to 2026).
What medical group is Dr. Greg J. Jun part of?
Dr. Jun is linked to Legacy Healthcare Services. Dmand AI links Dr. Jun to 5 more medical groups.
Does Dr. Greg J. Jun accept Medicare?
Yes. CMS data shows Dr. Jun billed Medicare for 181 services in 2020, and Dr. Jun accepts Medicare assignment.
Is Dr. Greg J. Jun board certified?
Yes. Dr. Jun is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Greg J. Jun bill to Medicare?
In 2020, Dr. Jun's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and hospital inpatient care (99233).
Show 5 more questionsShow fewer questions
Where did Dr. Greg J. Jun go to medical school?
Dr. Jun graduated from Feinberg School of Medicine in 1997.
What drugs does Dr. Greg J. Jun prescribe most?
In 2024 Medicare Part D data, Dr. Jun's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Greg J. Jun received payments from drug or device companies?
CMS Open Payments shows $1,803 in general payments to Dr. Jun from 24 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Greg J. Jun been practicing?
Dr. Jun graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Greg J. Jun accept?
Dr. Jun is in network with 17 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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