GREGORY P DUFF M.D.
NPI 1952374290
Orthopaedic Surgery in Silverdale, WA

Q: What is Gregory Duff's NPI number?

The NPI number for Gregory Duff is 1952374290. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Q: What is Gregory Duff'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 Gregory Duff was last updated on December 2, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since February 08, 2006PECOS EnrolledAccepts Medicare Assignment

4409 NW ANDERSON HILL RD, SILVERDALE, WA 98383(360) 698-6630(360) 825-6536 Get Directions Write a Review

NPPES record last updated: December 2, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Gregory P Duff M.d. NPPES

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

GREGORY P DUFF M.D. (NPI 1952374290) is an individual orthopaedic surgery provider in Silverdale, Washington, licensed in Washington (MD00034439) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Harrison Medical Center, and is a graduate of Harvard Medical School (1992).

NPPES Registry Identity

NPI1952374290

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameGREGORY P DUFFCredential: M.D.

Location Address4409 NW ANDERSON HILL RDSilverdale, WA 98383-6807

Mailing Address4409 Nw Anderson Hill RdSilverdale, WA 98383-6807 · (360) 698-6630 · Fax (360) 825-6536

Phone(360) 698-6630

Fax(360) 825-6536

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 1992

Enumeration DateFebruary 8, 2006

Last NPPES UpdateDecember 2, 2020

NPPES CertifiedDecember 2, 2020

✔ NPI 1952374290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in WA · MD00034439

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.

4409 NW ANDERSON HILL RD, Silverdale, WA 98383

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Other Identifiers 3

Other0199377WA · Labor And Industries

Medicaid1105137WA

Medicaid1023009WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory P Duff M.d. 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 ID3375438351

PECOS Enrollment IDI20040303000622

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.

Areas of Expertise CMS Part B claims 12

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

196 services40 patients

Established patient office or other outpatient visit, 20-29 minutes 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.

175 services112 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.

107 services82 patients

Established patient office or other outpatient visit, 30-39 minutes 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.

58 services50 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

45 services38 patients

New patient office or other outpatient visit, 30-44 minutes 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

41 services41 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

21 services21 patients

New patient office or other outpatient visit, 45-59 minutes 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.

17 services17 patients

Prosthetic repair of shoulder joint, total shoulder 23472

Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.

13 services13 patients

Established patient office or other outpatient visit, 40-54 minutes 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

13 services13 patients

Lower limb (leg) arthroscopy (minimally invasive joint repair) NAN15

Lower limb arthroscopy is a minimally invasive procedure that allows doctors to examine and repair issues in your leg joints. It involves making small incisions through which a tiny camera and instruments are inserted. This technique can help diagnose and treat various joint problems with less pain and quicker recovery time.

0 services1 patient

Upper limb (arm) arthroscopy (minimally invasive joint repair) NAN17

Upper limb arthroscopy is a minimally invasive procedure used to examine and treat issues within your arm's joints. A small camera, called an arthroscope, is inserted through a tiny incision, providing a clear view of the joint. This method often results in less pain and faster recovery compared to open surgery.

0 services1 patient

Hospital Affiliations CMS Care Compare 2

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

Harrison Medical Center

Acute Care Hospitals · Bremerton, WA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500039

Location2520 Cherry AvenueBremerton, WA 98310 · Kitsap County

Emergency services Birthing friendly

Olympic Medical Center

Acute Care Hospitals · Port Angeles, WA

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number500072

Location939 Caroline StPort Angeles, WA 98362 · Clallam County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98383 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

$88.29 typical visit price

range $57.27 – $172.80

Typical copayment $22.07 (range $14.31 – $43.20)

Most-billed visit code 99203

Established Patient

$71.29 typical visit price

range $18.56 – $141.11

Typical copayment $17.82 (range $4.64 – $35.27)

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.

Referred Medical Equipment & Supplies CMS DME claims

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

Shoulder orthosis, acromio/clavicular (canvas and webbing type), prefabricated, off-the-shelf L3670

DME-Orthotic Devices · category DF000N

1 supplier23 claims23 services$88.91 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.

JAMES A ALLEN JR. PA-C

Physician Assistant