Dr. Mark S. Duffield , DO
Orthopaedic Surgery • Austell, GA
3672 Marathon Cir, Suite 200
Austell, GA 301066821
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Mark Duffield is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on May 23, 2005; this date does not establish years in practice.
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Published CMS data list 12,794 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J1010 — Injection, methylprednisolone acetate, 1 mg: 11,520 service units.
- 99213 — Established patient outpatient office visit: 325 service units.
- J1100 — Injection, dexamethasone sodium phosphate, 1 mg: 282 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 11 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 976 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Meloxicam — 311 prescription fills, including refills.
- Celecoxib — 304 prescription fills, including refills.
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) — 93 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 12 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 65% of clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 13 clinicians with data). Median for this group: 6,863. Middle half: 2,756 to 21,588.
More Medicare Part B services than 90% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 466 clinicians with data). Median for this group: 2,112. Middle half: 682 to 5,937.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,289 in 2020 to 12,794 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
3672 Marathon Cir
Suite 200
Austell, GA 301066821
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Piedmont Orthopedics, Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
At Still University Of Health Sciences, College Of Osteo Med, Kirksville
1987
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
283 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $72,788 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $51,499 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
1,062 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$14,253 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $123.91 across 7 records.
By nature of payment
- Food and Beverage: $123.91 across 7 records.
Reporting-company totals (3 largest of 5)
- MOXIMED, INC: $52.55 across 3 records.
- Smith+Nephew, Inc.: $23.32 across 1 record.
- VERTEX PHARMACEUTICALS INCORPORATED: $19.92 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
39 years (graduated 1987)
CMS Doctors and Clinicians data list 1987 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Duffield has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Duffield as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Austell and Georgia
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 65% of clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 13 clinicians with data). Median for this group: 6,863. Middle half: 2,756 to 21,588.
More Medicare Part B services than 90% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 466 clinicians with data). Median for this group: 2,112. Middle half: 682 to 5,937.
Medicare-allowed amount
Close to the middle for clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 13 clinicians with data). Median for this group: $77,273. Middle half: $53,761 to $179,972.
A lower Medicare-allowed amount than 60% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 466 clinicians with data). Median for this group: $96,431. Middle half: $41,948 to $181,444.
Paid by Medicare
Close to the middle for clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 13 clinicians with data). Median for this group: $55,023. Middle half: $38,836 to $135,176.
A lower Medicare payment amount than 60% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 466 clinicians with data). Median for this group: $71,995. Middle half: $31,204 to $136,115.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 12 clinicians with data). Median for this group: 622. Middle half: 468 to 806.
More Part D prescriptions than 75% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 487 clinicians with data). Median for this group: 491. Middle half: 182 to 889.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Orthopaedic Surgery in Austell, GA (2024, 12 clinicians with data). Median for this group: $5,242. Middle half: $3,241 to $7,773.
A higher Part D drug cost than 85% of clinicians listed under Orthopaedic Surgery in Georgia (2024, 487 clinicians with data). Median for this group: $3,700. Middle half: $1,125 to $8,077.
17 active clinicians are listed under Orthopaedic Surgery with a practice address in Austell, GA (753 in Georgia).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austell
0% of these 17 clinicians have the CMS telehealth indicator.
76.5% of these 17 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 893% from 1,289 in 2020 to 12,794 in 2024.
- 2020: 1,289
- 2021: 2,512
- 2022: 1,555
- 2023: 1,590
- 2024: 12,794
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Medicare-allowed amount
Medicare-allowed amount increased 18% from $61,607 in 2020 to $72,788 in 2024.
- 2020: $61,607
- 2021: $74,314
- 2022: $102,943
- 2023: $101,670
- 2024: $72,788
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Paid by Medicare
Paid by Medicare increased 15% from $44,841 in 2020 to $51,499 in 2024.
- 2020: $44,841
- 2021: $53,804
- 2022: $76,056
- 2023: $75,810
- 2024: $51,499
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 18% from 825 in 2020 to 976 in 2024.
- 2020: 825
- 2021: 1,050
- 2022: 1,207
- 2023: 1,137
- 2024: 976
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30-day fills
30-day fills increased 15% from 927 in 2020 to 1,062 in 2024.
- 2020: 927
- 2021: 1,155
- 2022: 1,291
- 2023: 1,246
- 2024: 1,062
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Part D drug cost
Part D drug cost decreased 30% from $20,335 in 2020 to $14,253 in 2024.
- 2020: $20,335
- 2021: $29,380
- 2022: $34,183
- 2023: $22,692
- 2024: $14,253
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $169.48 in 2019 to $123.91 in 2025.
- 2019: $169.48
- 2021: $83.26
- 2023: $1,321.32
- 2024: $209.05
- 2025: $123.91
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $123.91.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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NA | General | $23.32 |
| MOXIMED, INC |
Food and Beverage
In-kind items and services
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MISHA KNEE SYSTEM, SMALL, LEFT | General | $20.99 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $19.92 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VENCLEXTA | General | $18.27 |
| MOXIMED, INC |
Food and Beverage
In-kind items and services
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MISHA KNEE SYSTEM, SMALL, LEFT | General | $17.07 |
| MOXIMED, INC |
Food and Beverage
In-kind items and services
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MISHA KNEE SYSTEM, SMALL, LEFT | General | $14.49 |
| Orthofix Medical, Inc. |
Food and Beverage
Cash or cash equivalent
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Physio-Stim | General | $9.85 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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J1010
Injection, methylprednisolone acetate, 1 mg
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11,520 | 73 | $0.57 | $0.13 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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325 | 209 | $261.06 | $90.00 |
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J1100
Injection, dexamethasone sodium phosphate, 1 mg
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282 | 62 | $1.00 | $0.11 |
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20610
Aspiration and/or injection of fluid from large joint
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214 | 145 | $258.18 | $69.66 |
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J1040
Injection, methylprednisolone acetate, 80 mg
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89 | 35 | $44.00 | $9.69 |
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73502
X-ray of hip, 2-3 views
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78 | 69 | $146.00 | $47.30 |
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73562
X-ray of knee, 3 views
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78 | 69 | $127.00 | $40.88 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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72 | 57 | $380.83 | $126.11 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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71 | 71 | $370.00 | $111.86 |
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73030
X-ray of shoulder, minimum of 2 views
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46 | 44 | $103.00 | $34.85 |
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72100
X-ray of lower and sacral spine, 2-3 views
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19 | 19 | $125.00 | $38.79 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Meloxicam | Meloxicam | 311 | 10,635 | $719.12 | 118 |
| Celecoxib | Celecoxib | 304 | 10,190 | $7,632.80 | 122 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 93 | 538 | $601.46 | 61 |
| Ondansetron Hcl | Ondansetron Hcl | 55 | 954 | $329.56 | 48 |
| Tramadol Hcl | Tramadol Hcl | 54 | 377 | $109.51 | 42 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 40 | 288 | $302.08 | 32 |
| Gabapentin | Gabapentin | 34 | 987 | $261.00 | 13 |
| Methocarbamol | Methocarbamol | 32 | 331 | $105.38 | 19 |
| Diclofenac Sodium | Diclofenac Sodium | 15 | 447 | $685.76 | — |
| Cephalexin | Cephalexin | 13 | 49 | $51.21 | 11 |
| Methylprednisolone | Methylprednisolone | 13 | 78 | $72.12 | 12 |
| Xarelto | Rivaroxaban | 12 | 184 | $3,383.32 | 12 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207X00000X
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.
NUCC Taxonomy Code: 207XX0005X
An orthopaedic surgeon trained in sports medicine provides appropriate care for all structures of the musculoskeletal system directly affected by participation in sporting activity. This specialist is proficient in areas including conditioning, training and fitness, athletic performance and the impact of dietary supplements, pharmaceuticals, and nutrition on performance and health, coordination of care within the team setting utilizing other health care professionals, field evaluation and management, soft tissue biomechanics and injury healing and repair. Knowledge and understanding of the principles and techniques of rehabilitation, athletic equipment and orthotic devices enables the specialist to prevent and manage athletic injuries.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20050119000587
GA
9638066541
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Piedmont Orthopedics, Llc
3672 Marathon Cir, Austell, GA 301066821
Phone: 7709443303
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery - Orthopaedic Surgery of the Spine
Doctor of Medicine (M.D.)
Physical Therapist
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated May 23, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Austell
- Dr. Gary Simon, MD
- Dr. Sudhir Belagaje, MD
- Dr. Freddy Achecar, MD
- Dr. Raj Bhole, MD
- Dr. D Brooks, MD
- Dr. Eduardo Olmedo, MD
Mailing Address
900 Circle 75 Pkwy Se, Suite 1700
Atlanta, GA 303393035
Phone: 7709536929