Dr. Gregory P Duff , MD
Orthopaedic Surgery โข Silverdale, WA
4409 Nw Anderson Hill Rd
Silverdale, WA 983836807
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. Gregory Duff is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on February 8, 2006; this date does not establish years in practice.
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Published CMS data list 1,068 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J3301 โ Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 348 service units.
- 99214 โ Established patient outpatient office visit: 213 service units.
- 73030 โ X-ray of shoulder, minimum of 2 views: 144 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 12 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 214 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) โ 73 prescription fills, including refills.
- Cephalexin โ 57 prescription fills, including refills.
- Ondansetron Odt (Ondansetron) โ 49 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Orthopaedic Surgery in Washington (2024, 328 clinicians with data). Median for this group: 860. Middle half: 274 to 1,938.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 596 in 2020 to 1,068 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
4409 Nw Anderson Hill Rd
Silverdale, WA 983836807
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: Franciscan Medical Group. 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
Harvard Medical School
1992
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
239 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 โ by Provider, 2024.
Medicare-allowed amount
About $109,314 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 โ by Provider and Service, 2024.
Paid by Medicare
About $83,435 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 โ by Provider and Service, 2024.
30-day fills
215 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
$1,480 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 โ by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $1,200.00 in 2021
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2021.
Years since graduation
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 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
2006
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, โDoes your provider accept Medicare as full payment?โ
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. Duff 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. Duff 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 Silverdale and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Orthopaedic Surgery in Washington (2024, 328 clinicians with data). Median for this group: 860. Middle half: 274 to 1,938.
Too few clinicians listed under Orthopaedic Surgery in Silverdale have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Orthopaedic Surgery in Washington (2024, 328 clinicians with data). Median for this group: $77,267. Middle half: $35,050 to $159,685.
Too few clinicians listed under Orthopaedic Surgery in Silverdale have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Orthopaedic Surgery in Washington (2024, 328 clinicians with data). Median for this group: $58,185. Middle half: $25,628 to $121,402.
Too few clinicians listed under Orthopaedic Surgery in Silverdale have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Orthopaedic Surgery in Washington (2024, 317 clinicians with data). Median for this group: 145. Middle half: 54 to 316.
Too few clinicians listed under Orthopaedic Surgery in Silverdale have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 60% of clinicians listed under Orthopaedic Surgery in Washington (2024, 317 clinicians with data). Median for this group: $840. Middle half: $304 to $2,080.
Too few clinicians listed under Orthopaedic Surgery in Silverdale have Medicare Part D data for 2024 to compare.
10 active clinicians are listed under Orthopaedic Surgery with a practice address in Silverdale, WA (657 in Washington).
Addresses are self-reported to NPPES and may be out of date.
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 79% from 596 in 2020 to 1,068 in 2024.
- 2020: 596
- 2021: 584
- 2022: 686
- 2023: 890
- 2024: 1,068
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Medicare-allowed amount
Medicare-allowed amount increased 76% from $62,266 in 2020 to $109,314 in 2024.
- 2020: $62,266
- 2021: $63,699
- 2022: $60,773
- 2023: $84,757
- 2024: $109,314
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Paid by Medicare
Paid by Medicare increased 72% from $48,629 in 2020 to $83,435 in 2024.
- 2020: $48,629
- 2021: $48,940
- 2022: $45,169
- 2023: $64,421
- 2024: $83,435
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 106% from 104 in 2020 to 214 in 2024.
- 2020: 104
- 2021: 48
- 2022: 112
- 2023: 209
- 2024: 214
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30-day fills
30-day fills increased 106% from 104 in 2020 to 215 in 2024.
- 2020: 104
- 2021: 48
- 2022: 112
- 2023: 209
- 2024: 215
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Part D drug cost
Part D drug cost went from $896 in 2020 to $1,480 in 2024.
- 2020: $896
- 2021: $442
- 2022: $825
- 2023: $1,570
- 2024: $1,480
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $15.28 in 2020 to $1,200.00 in 2021.
- 2020: $15.28
- 2021: $1,200.00
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2021 (payments made January 1 โ December 31, 2021): fewer than 11 records totaling $1,200.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Summit Surgical Corp. |
Education
In-kind items and services
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โ | General | $1,200.00 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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348 | 67 | $4.00 | $0.97 |
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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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213 | 135 | $371.27 | $127.80 |
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73030
X-ray of shoulder, minimum of 2 views
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144 | 116 | $102.13 | $35.36 |
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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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76 | 60 | $262.17 | $89.39 |
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20611
Aspiration and/or injection of fluid large joint using ultrasound guidance
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71 | 59 | $291.00 | $99.28 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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67 | 54 | $520.78 | $179.53 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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61 | 61 | $485.28 | $166.39 |
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23472
Prosthetic repair of shoulder joint, total shoulder
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25 | 23 | $4202.44 | $1416.92 |
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73564
X-ray of knee, 4 or more views
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25 | 20 | $137.68 | $48.07 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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14 | 14 | $640.14 | $218.23 |
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73080
X-ray of elbow, minimum of 3 views
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13 | 13 | $96.31 | $33.31 |
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73502
X-ray of hip, 2-3 views
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11 | 11 | $138.64 | $48.10 |
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 |
|---|---|---|---|---|---|
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 73 | 471 | $810.93 | 51 |
| Cephalexin | Cephalexin | 57 | 107 | $108.49 | 53 |
| Ondansetron Odt | Ondansetron | 49 | 203 | $290.18 | 44 |
| Ibuprofen | Ibuprofen | 35 | 851 | $270.27 | 28 |
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
Self-certified to NPPES: 2020-12-02NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20040303000622
WA
3375438351
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
Franciscan Medical Group
4409 Nw Anderson Hill Rd, Silverdale, WA 983836807
Phone: 3606986630
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 - Orthopaedic Surgery of the Spine
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant - Medical
Physician Assistant (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated February 08, 2006.
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 November 2026.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Silverdale
- Dr. Erin Moyer, MD
- Dr. Dawson Brown, MD
- Dr. Bradley Watters, MD
- Dr. Vadim Goz, MD
- Dr. Christopher Rankin, MD
- Dr. Stacee Kessinger, MD
Mailing Address
4409 Nw Anderson Hill Rd
Silverdale, WA 983836807
Phone: 3606986630