DR. JAMES C MASON (M.D.) – Internal Medicine Physician, NPI 1174675524

DR. JAMES C MASON (M.D.) is a healthcare provider. based in Walla walla, Washington. specializing in Internal Medicine Physician. They hold the professional credentials M.D.. They hold a License No. MD60166611 (WA). The NPI Number for DR. JAMES C MASON (M.D.) is 1174675524

Main info

Male
Sole Proprietor
Name
DR. JAMES C MASON (M.D.)
NPI
1174675524
Phone
(509) 525-0480
Address
1025 S 2ND AVE
Enumeration Date
17 January 2007
Last Update Date
27 October 2011
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience66
Completeness75
Years active:19State licenses:2Digital endpointsOther names

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Provider Addresses for DR. JAMES C MASON (M.D.)

  • 1025, South 2nd Avenue, Walla Walla, Walla Walla County, Washington, 99362, United States

    WALLA WALLA, WA 993624116

    Phone: (509) 525-0480

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

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Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

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Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 99362)

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Reviews

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Frequently asked questions

What is the 10-digit NPI for DR. JAMES C MASON (M.D.)?
DR. JAMES C MASON (M.D.) — NPI 1174675524 — is the standard way to identify this listing.
Is DR. JAMES C MASON (M.D.) listed as active for patients and plans?
The listing shows DR. JAMES C MASON (M.D.) as active in the NPI system.
What is DR. JAMES C MASON (M.D.) best known for clinically?
Directory data describes DR. JAMES C MASON (M.D.) with Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Where is DR. JAMES C MASON (M.D.) based?
DR. JAMES C MASON (M.D.) is tied to Walla Walla, Washington in the data we show; additional addresses may exist on the full record.
Why does DR. JAMES C MASON (M.D.) have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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