Gregory Dean Dietrich, MD

Orthopedic Surgery (CMS) · Lewiston, ID

At a glance

320 Warner Drive, Lewiston, ID 83501

Published activity: Hip replacement · Knee replacement · Laminectomy or laminotomy (partial removal of spine bones). View counts and coverage

NPPES record updated Jun 30, 2026. Public records can lag behind changes at a practice.

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Medicare & insurance

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Practice location

320 Warner Drive
Lewiston, ID 83501

REPORTED BACKGROUND

Education & affiliations

Medical / professional school: Loma Linda University School Of Medicine
Graduation year: 1992
CMS specialties: Orthopedic Surgery

Practice groups

Reported hospital affiliations

Clearwater Valley Hospital & Clinics Orofino, ID
St Joseph Regional Medical Center Lewiston, ID
St Mary's Hospital Cottonwood, ID
Syringa General Hospital Grangeville, ID
Tri-State Memorial Hospital Clarkston, WA

Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.

Source: CMS National Downloadable File · Published Oct 15, 2026.

Source: CMS Facility Affiliation Data · Published Oct 15, 2026.

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PUBLISHED MEDICARE ACTIVITY

Procedures in the public data

Reported activity can help you ask more informed questions about a practice’s services.

Procedure category	Published Medicare activity
Hip replacement	26
Knee replacement	1-10
Laminectomy or laminotomy (partial removal of spine bones)	95
Lower limb (leg) arthroscopy (minimally invasive joint repair)	1-10
Removal of tissue	1-10
Spinal fusion	198

CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology

Source: CMS Utilization Data · Published Oct 15, 2026.

Find providers with a similar service mix

Compare 2024 published Medicare activity in the same reported specialty, here or in another city.

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PAYMENT TRANSPARENCY

Industry-reported general payments

$140.32General payments · 2025

4Reported transactions

4Reporting companies

Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.

See payment purposes and reporting companies

Reported purposes

Purpose	Amount
Food and beverage	$140.32

Reporting companies

Company	Amount
DEPUY SYNTHES SALES INC.	$58.50
SAWTOOTH SURGICAL SOLUTIONS INC	$32.37
FERRING PHARMACEUTICALS INC.	$25.11
GLOBUS MEDICAL, INC.	$24.34

View official Open Payments profile ↗

Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.

Professional details: NPI, taxonomy & registry record

NPI1306831698

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Registry details

Primary taxonomy: Orthopedic Surgery (CMS)
Taxonomy code: 207XS0117X
Enumeration date: Sep 13, 2005
Record updated: Jun 30, 2026

More registry details

Provider type: Individual · Type 1
Reported credentials: MD

Reported taxonomies and licenses

Specialty details in registry

207XS0117X

License reported: 00034506 WA

Specialty details in registry

207XS0117X · Primary

License reported: M7482 ID

License numbers and credentials are reported to NPPES; HCPList does not independently verify them.

Practice location

320 Warner Drive
Lewiston, ID 83501

Phone: (208) 743-3523
Fax: (208) 746-8741

Mailing address

320 WARNER DR

LEWISTON, ID 835014441

Source: NPPES Source through Oct 18, 2026An NPI does not verify licensure or credentials.

Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.

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