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Internal Medicine in Seattle, WA
Sidney H Allison is an internal medicine physician at 747 Broadway in Seattle, WA. View phone 206-215-2520 and NPI 1275893752.
Loa does not yet have a verified provider-submitted price for this listing. Ask the provider and your insurer for a current estimate before scheduling care.
Primary care providers handle preventive visits, common illness care, screenings, and ongoing management of chronic conditions. Office visits, labs, and immunizations are among the most frequently billed services.
For NPI 1275893752, the CMS Doctors and Clinicians National Downloadable File released July 9, 2026 reports Hospitalist and Internal Medicine.
CMS enrollment records list group affiliations including American Specialty Physicians Group Inc, San Francisco Unified Physicians GROUP, Inc, and Swedish Health Services.
Review the CMS source dataset. Confirm current participation and services directly with the provider.
Published and estimated prices are a starting point. Confirm these details before scheduling to avoid surprises.
Request a written estimate for the exact service, including professional and facility fees.
Verify the CPT or other billing code and whether care is billed as an office, outpatient, or hospital service.
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Sidney H Allison MD is published from source-labeled provider data. Registry classifications, practice locations, network participation, and contact information can change, so verify current details before care, billing, or referral.
Source: NPI Registry. Source record updated February 10, 2026. Loa profile refreshed Jul 21, 2026.
Loa does not yet have a verified provider-submitted price for Sidney H Allison MD. Ask the office for a written self-pay estimate and compare nearby source-labeled prices before scheduling.
This profile shows public provider information for Internal Medicine in Seattle, WA, including contact details, NPI source information, and source-labeled price context when available.
Sidney H Allison MD is listed as an NPI individual under Internal Medicine (207R00000X). Registry classifications can change and do not guarantee that every listed service is currently offered.
The NPI Registry lists May 18, 2012 as the enumeration date for NPI 1275893752. The record certification date is February 10, 2026. These are registry dates, not necessarily the date the provider began practicing.
The CMS Doctors and Clinicians file lists Hospitalist and Internal Medicine for NPI 1275893752. Medicare enrollment details can change, so confirm current credentials, participation, and services directly.
The CMS record indicates that Sidney H Allison MD may accept Medicare assignment. Confirm current participation, network status, and patient responsibility before care.
Contact the office before care to confirm the location, appointment availability, network participation, exact service and billing code, and all expected professional or facility fees.
The provider or an authorized representative can claim the profile or suggest a correction. Loa reviews submitted changes before publishing them.