Anti-Bacterial AgentsArthroplasty, Replacement, KneeBone and Bones
Dr. Frederick O'Neal Gregg, DO
NPI1952523607PAC ID2668505355
- Medicare services, 2024
- 16,956
- Medicare patients, 2024
- 1,177
- Part D claims, 2024
- 1,315
- Publications
- 1
- MIPS score, 2024
- 62
- Practice address
- 3688 Veterans Memorial Highway, Ste 100, Hattiesburg, MS 39401
- Practice phone
- Call (601) 554-7525
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern Surgery Center - Hattiesburg
Surgery Center - Medicare-Certified · Hattiesburg, Mississippi
Find Dr. Gregg's professional email, personal email and mobile number
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Dr. Frederick O'Neal Gregg is an orthopedic surgeon in Hattiesburg, Mississippi
Dr. Gregg practices at Southern Surgery Center - Hattiesburg in Hattiesburg, Mississippi.
Dr. Gregg's NPI, 1952523607, was assigned on May 3, 2007. Dr. Gregg holds Mississippi license 20954.
NPI and contact details
- NPI
- 1952523607NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668505355
- NPI enumeration date
- May 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (601) 554-7525
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Frederick O'Neal Gregg practices at Southern Surgery Center - Hattiesburg in Hattiesburg, Mississippi
Dr. Gregg's primary practice is Southern Surgery Center - Hattiesburg, at 3688 Veterans Memorial Highway, Ste 100, Hattiesburg, MS 39401. The practice phone is (601) 554-7525.
- Southern Surgery Center - Hattiesburg3688 Veterans Memorial Highway, Ste 100, Hattiesburg, MS 39401Phone(601) 554-7525
Source: Dmand AI Affiliation Data
Dr. Frederick O'Neal Gregg is affiliated with 12 sites of care and 1 medical group
Dr. Gregg's primary practice is Southern Surgery Center - Hattiesburg in Hattiesburg, Mississippi. Dr. Gregg is also affiliated with Forrest General Hospital. The medical group on file is Southern Bone & Joint Specialists, P.A. Dmand AI also links Dr. Gregg to 4 more hospitals, 5 home health agencies and 1 group practice or clinic, each named with a free account.
Southern Surgery Center - HattiesburgPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Frederick O'Neal Gregg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gregg practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern Surgery Center - Hattiesburg | Available with a free account |
| +11 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Frederick O'Neal Gregg is one of 159 orthopedic surgeons in Mississippi
Orthopaedic surgery is Dr. Gregg's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Gregg's licenses on file in 2 states: Mississippi and Georgia.
Specialties and state licenses
- Orthopaedic surgery, MississippiPrimary
- Georgia license
Orthopedic surgeons near Dr. Gregg
Counts of orthopedic surgeons 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. Frederick O'Neal Gregg billed Medicare for 16,956 services in 2024
CMS data shows 16,956 Medicare services from Dr. Gregg across 33 procedure codes in 2024, for 1,177 Medicare patients. Medicare paid $230,317 for them.
Medicare services, 202416,956
Medicare patients1,177
Paid by Medicare$230,317
Procedure codes33
Dr. Gregg's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 6272024: 13,7822098%
- Imaging
- 2023: 1,6922024: 1,50711%
- Office and hospital visits
- 2023: 1,0632024: 96010%
- Surgery
- 2023: 6162024: 6302%
- Tests and treatments
- 2023: 522024: 544%
- Other services
- 2023: 302024: 2323%
Where Dr. Gregg's Medicare services took place, 2024
- In an office16,78899%
- In a facility1681%
Dr. Gregg compared with the Mississippi median for orthopedic surgeons, 2024
- Dr. Gregg
- Mississippi median
- Medicare services
- 16,956vs 1,8829.0 times
- Medicare patients
- 1,177vs 3593.3 times
- Part D claims
- 1,244vs 2954.2 times
Medians across 150 orthopedic surgeons in Mississippi with Dmand AI profiles that report each measure.
Dr. Gregg'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
Dr. Frederick O'Neal Gregg treated 1,177 Medicare patients in 2024, average age 74
CMS counts 1,177 Medicare patients who saw Dr. Gregg in 2024. The largest group is 65 to 74, with 546 patients. 75% of them have arthritis, and 75% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gregg's median patient age at 71, with 61% women.
Medicare patients, 20241,177
Average age74
Average risk score1.06
Also on Medicaid8%
Dr. Gregg's Medicare patients by age, 2024
Dr. Gregg's Medicare patients by sex, 2024
- Women73663%
- Men44137%
Chronic conditions among Dr. Gregg's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol74%
- Ischemic heart disease36%
- Anxiety29%
- Diabetes29%
- Mood disorders28%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gregg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Frederick O'Neal Gregg wrote 1,315 Medicare Part D claims in 2024
In 2024, Dr. Gregg wrote 1,315 Medicare Part D claims for 433 patients. 99% of them were for generic drugs. CMS names the drug for 1,244 of them, across 15 drugs with 11 or more claims each, at $6,389 in total drug cost. In 2023, CMS named 1,276 claims across 14 drugs.
Part D claims, 20241,315
Drugs named by CMS15
Total drug cost$6,389
Part D patients433
Dr. Gregg's Part D claims by kind of drug, 2024
- Generic1,302 claims99%
- Brand-name13 claims1%
Dr. Gregg'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. Gregg's Part D claims, 2024
- Opioids28%366 of 1,315 claims
- Antibiotics7%90 of 1,315 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: 1,2762024: 1,2443%
Drugs named by CMS: 15 in 2024, 14 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
Dr. Frederick O'Neal Gregg scored 62 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 62 out of 100 for Dr. Gregg for performance year 2024, reported individually. Dr. Gregg accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of lower limb (leg) arthroscopy (minimally invasive joint repair) by Dr. Gregg, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Gregg's MIPS scores, performance year 2024
- 62of 100Final score
- 32.4of 100Quality
- 58of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Gregg ranks in Medicare procedure volume
- Knee replacement
- 88th percentile73 procedures
- Lower limb (leg) arthroscopy (minimally invasive joint repair)
- 96th percentile27 procedures
- Hip replacement
- 60th percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Frederick O'Neal Gregg has 1 publication on record
Dmand AI links 1 paper to Dr. Gregg. Dr. Gregg's most frequent co-authors are Raymond Scott Corpe, MD and Dale Nicholas Reed, MD.
Papers1
Dr. Gregg's most frequent co-authors
Recent publications by Dr. Gregg
See who Dr. Gregg researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gregg works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Frederick O'Neal Gregg received $45 in industry payments from 2017 to 2022
CMS Open Payments shows 3 general payments to Dr. Gregg from 2 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $30.
General payments to Dr. Gregg by program year, 2017 to 2022
Companies that paid Dr. Gregg the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Frederick O'Neal Gregg'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) |
| 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Frederick O'Neal Gregg
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. Frederick O'Neal Gregg's NPI number?
Dr. Frederick O'Neal Gregg's NPI number is 1952523607. It was assigned on May 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Frederick O'Neal Gregg?
Dr. Frederick O'Neal Gregg is an orthopedic surgeon in Hattiesburg, Mississippi. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Frederick O'Neal Gregg practice?
Dr. Gregg practices at 3688 Veterans Memorial Highway, Ste 100, Hattiesburg, MS 39401. Dr. Gregg's primary practice is Southern Surgery Center - Hattiesburg in Hattiesburg, Mississippi. Dmand AI also links Dr. Gregg to 4 hospitals, 5 home health agencies and 1 group practice or clinic.
What is Dr. Frederick O'Neal Gregg's office phone number?
The practice phone on file for Dr. Gregg is (601) 554-7525.
What is Dr. Frederick O'Neal Gregg's medical license number?
Dr. Gregg holds Mississippi license 20954, one of the licenses on file in 2 states.
Which states has Dr. Frederick O'Neal Gregg been licensed in?
Dmand AI has state licenses on file for Dr. Gregg in Mississippi and Georgia.
Which hospitals is Dr. Frederick O'Neal Gregg affiliated with?
Dr. Gregg is affiliated with Forrest General Hospital. Dmand AI links Dr. Gregg to 4 more hospitals.
What medical group is Dr. Frederick O'Neal Gregg part of?
Dr. Gregg is linked to Southern Bone & Joint Specialists, P.A.
Does Dr. Frederick O'Neal Gregg accept Medicare?
Yes. CMS data shows Dr. Gregg billed Medicare for 16,956 services in 2024, and Dr. Gregg accepts Medicare assignment.
What is Dr. Frederick O'Neal Gregg's MIPS score?
Dr. Gregg's MIPS final score for performance year 2024 is 62 out of 100, reported individually.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Frederick O'Neal Gregg see?
CMS counts 1,177 Medicare patients who saw Dr. Gregg in 2024, with an average age of 74.
What services does Dr. Frederick O'Neal Gregg bill to Medicare?
In 2024, Dr. Gregg's most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99214) and diagnostic imaging (73560).
What drugs does Dr. Frederick O'Neal Gregg prescribe most?
In 2024 Medicare Part D data, Dr. Gregg's most prescribed drugs by claims were Meloxicam, Tramadol HCl and Oxycodone HCl.
Has Dr. Frederick O'Neal Gregg received payments from drug or device companies?
CMS Open Payments shows $45 in general payments to Dr. Gregg from 2 companies from 2017 to 2022. The largest total came from Boston Scientific Corporation.
How long has Dr. Frederick O'Neal Gregg been practicing?
Dr. Gregg graduated from medical school in 2005, 21 years ago.
Does Dr. Frederick O'Neal Gregg do research?
Dmand AI links 1 publication to Dr. Gregg.
Who does Dr. Frederick O'Neal Gregg publish with?
Dr. Gregg's most frequent co-authors are Raymond Scott Corpe, MD (1 shared paper) and Dale Nicholas Reed, MD (1 shared paper).
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