DR. FREDERICK O'NEAL GREGG D.O.
NPI 1952523607
Orthopaedic Surgery in Hattiesburg, MS

Q: What is Frederick Gregg's NPI number?

The NPI number for Frederick Gregg is 1952523607. It was assigned to this individual provider in the NPPES registry on May 3, 2007.

Q: What is Frederick Gregg's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Frederick Gregg was last updated on July 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 03, 2007PECOS EnrolledAccepts Medicare Assignment

99.75/100

CMS Quality Rating

3688 VETERANS MEMORIAL DR, SUITE 200, HATTIESBURG, MS 39401(601) 554-7400(601) 554-7488 Get Directions Write a Review

NPPES record last updated: July 27, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Frederick O'neal Gregg D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. FREDERICK O'NEAL GREGG D.O. (NPI 1952523607) is an individual orthopaedic surgery provider in Hattiesburg, Mississippi, licensed in Mississippi (20954) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Jasper General Hospital, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1952523607

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameDR. FREDERICK O'NEAL GREGGCredential: D.O.

Location Address3688 VETERANS MEMORIAL DR, SUITE 200Hattiesburg, MS 39401

Mailing Address3688 Veterans Memorial Dr, Suite 200Hattiesburg, MS 39401 · (601) 554-7400 · Fax (601) 554-7488

Phone(601) 554-7400

Fax(601) 554-7488

Sole ProprietorNo

Medical School CMSOtherGraduated 2005

Enumeration DateMay 3, 2007

Last NPPES UpdateJuly 27, 2010

✔ NPI 1952523607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in MS · 20954✔ Licensed in GA · 001226

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

3688 VETERANS MEMORIAL DR, Hattiesburg, MS 39401

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, Cigna Healthcare, Oscar Health Plan, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Frederick O'neal Gregg D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2668505355

PECOS Enrollment IDI20100802000495

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Frederick Gregg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern Bone & Joint Specialists, PA

Same address

Orthopaedic Surgery

3688 VETERANS MEMORIAL DRIVE, SUITE 200
Hattiesburg, MS 39401

Reassigned Medicare billing, Mississippi enrollment
52 clinicians in this Medicare group

NPI 1831110725 (601) 554-7400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 32

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

641 services415 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

618 services427 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

462 services267 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

193 services137 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

150 services133 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

128 services126 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

126 services126 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

117 services98 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

103 services81 patients

Computer-assisted surgery for muscle and bone procedure 20985

Computer-assisted surgery for muscle and bone procedures involves using a computer to aid in planning and performing surgery. This technology helps increase precision, reduce invasiveness, and improve outcomes. It's commonly used in orthopedic surgeries like joint replacements.

77 services74 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

77 services74 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

66 services66 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

57 services39 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

54 services44 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

49 services43 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

48 services37 patients

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

45 services43 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

35 services35 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

34 services27 patients

Mri scan of leg joint without contrast 73721

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

33 services33 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

28 services28 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

27 services27 patients

X-ray of wrist, 2 views 73100

An X-ray of the wrist, 2 views, is a diagnostic procedure where two different images of your wrist are taken using a small amount of radiation. This helps identify any abnormalities or injuries such as fractures or arthritis. It's a quick, non-invasive process.

25 services13 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

23 services23 patients

Hyaluronan or derivative, gel-one, for intra-articular injection, per dose J7326

Hyaluronan or Gel-One is a substance injected directly into your joint space. It's aimed to supplement your body's natural joint fluid, helping to lubricate and cushion the joint, reducing pain and improving mobility. It's often used for arthritis relief.

23 services15 patients

X-ray of elbow, 2 views 73070

An elbow X-ray, 2 views, is a quick, painless imaging test. It uses a small amount of radiation to produce detailed images of your elbow from two different angles. This helps in diagnosing conditions like fractures, infection, or arthritis. It's a safe and effective way to monitor your elbow health.

22 services17 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

19 services19 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

15 services15 patients

Removal of knee cartilage using an endoscope 29881

This procedure, known as arthroscopic knee surgery, involves using a small camera (endoscope) to view the inside of your knee. Small instruments are used to remove damaged cartilage. This can help alleviate pain and improve knee function.

14 services14 patients

Mri scan of lower spinal canal before and after contrast 72158

An MRI scan of the lower spinal canal with contrast is a non-invasive imaging procedure. It uses magnetic fields to generate detailed images of your lower spine. A contrast agent is injected to enhance these images, helping doctors see issues more clearly.

13 services13 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

12 services12 patients

X-ray of both hips, 2 views 73521

An X-ray of both hips, 2 views, is an imaging test that uses a small amount of radiation to create detailed pictures of your hip joints. This procedure helps to detect fractures, infections, or other abnormalities in the hip area. Two different angles will be captured for a comprehensive assessment.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Jasper General Hospital

Acute Care Hospitals · Bay Springs, MS

OwnershipGovernment - Local

CMS Certification Number250018

Location15A South 6th StreetBay Springs, MS 39422 · Jasper County

Wayne General Hospital

Acute Care Hospitals · Waynesboro, MS

OwnershipGovernment - Local

CMS Certification Number250077

Location950 Matthew DrWaynesboro, MS 39367 · Wayne County

Emergency services Birthing friendly

Forrest General Hospital

Acute Care Hospitals · Hattiesburg, MS

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number250078

Location6051 Us Highway 49 SouthHattiesburg, MS 39404 · Forrest County

Emergency services Birthing friendly

Merit Health Wesley

Acute Care Hospitals · Hattiesburg, MS

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number250094

Location5001 W Hardy StHattiesburg, MS 39402 · Lamar County

Emergency services Birthing friendly

Lawrence County Hospital Cah

Critical Access Hospitals · Monticello, MS

OwnershipGovernment - Local

CMS Certification Number251305

Location1065 East Broad StMonticello, MS 39654 · Lawrence County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 39401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$80.50 typical visit price

range $51.65 – $159.18

Typical copayment $20.12 (range $12.91 – $39.79)

Most-billed visit code 99203

Established Patient

$64.96 typical visit price

range $16.15 – $129.61

Typical copayment $16.24 (range $4.03 – $32.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

99.75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

90.99

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Risk-standardized complication rate (RSCR) following elective primary total hip arthroplasty (THA) and/or total knee arthroplasty (TKA) for Merit-based Incentive Payment System (MIPS)

Lower rates are better for this measure.

0.03%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Crutches underarm, other than wood, adjustable or fixed, pair, with pads, tips and handgrips E0114

DME-Other DME · category DE000N

1 supplier13 claims13 services$32.35 avg. paid by Medicare

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

5 suppliers28 claims28 services$56.97 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. D ENISE W REYNOLDS M.D.

Anesthesiology

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7402

RILEY PHILLIPS PA-C

Physician Assistant

3688 VETERANS MEMORIAL DR
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

DR. MICHAEL C PATTERSON M.D.,

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

CLIFTON H DAVIS P.A.-C

Physician Assistant (Medical)

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

KIMBERLY T SIMNICHT CFNP

Specialist

3688 VETERANS MEMORIAL DR, STE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

MR. JIMMIE G MOORE JR. PA-C

Physician Assistant (Medical)

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

MARSHALL BYNUM PA

Physician Assistant (Medical)

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7400

DR. JAMES A ANTINNES M.D.,

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

3688 VETERANS MEMORIAL DR, SUITE 200
HATTIESBURG, MS 39401

Forrest County (601) 554-7451

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Frederick Gregg's NPI number?

The NPI number for Frederick Gregg is 1952523607. It was assigned to this individual provider in the NPPES registry on May 3, 2007.

Where is Frederick Gregg located?

Frederick Gregg practices at 3688 Veterans Memorial Dr Suite 200, Hattiesburg, MS 39401. The listed phone number is (601) 554-7400.

What is Frederick Gregg's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Frederick Gregg enrolled in Medicare?

Yes. Frederick Gregg is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Frederick Gregg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Gregg reassigns Medicare benefits to Southern Bone & Joint Specialists, PA (Hattiesburg, MS). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Frederick Gregg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Frederick Gregg accept?

Health plans from Blue Cross and Blue Shield of Alabama, Cigna Healthcare, Oscar Health Plan, Inc. and UnitedHealthcare list Frederick Gregg as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Frederick Gregg affiliated with any hospitals?

According to CMS data, Frederick Gregg is affiliated with Jasper General Hospital, Wayne General Hospital, Forrest General Hospital, Merit Health Wesley and Lawrence County Hospital Cah.

When was this NPI record last updated?

The NPPES record for Frederick Gregg was last updated on July 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.