Sidney H Allison, MD
Internal Medicine in Seattle, Washington
1275893752- Practice location
- 747 Broadway, Seattle, WA 98122-4379
- Phone
- 206-215-2520
- Fax
- 206-386-3180
- Last updated
- February 10, 2026
Sidney H Allison, MD is a Internal Medicine based in Seattle, WA. Sidney H Allison, MD holds the professional credentials of MD. The NPI number for Sidney H Allison, MD is 1275893752 and holds license No. MD60476243 (WA). The current practice location address is 747 Broadway, Seattle, WA 98122-4379 and the office can be reached by phone at 206-215-2520 and by fax at 206-386-3180. The NPI was assigned on May 18, 2012 and the record was last updated in NPPES on February 10, 2026.
●Provider Profile Details
- NPI Number
- 1275893752
- Provider Name
- Sidney H Allison
- Credential
- MD
- Entity Type
- Individual (Type 1 NPI)
- Gender
- Female
- Primary Taxonomy
- Internal Medicine · 207R00000X
- Sole Proprietor
- No
- Enumeration Date
- May 18, 2012
- Last Update Date
- February 10, 2026
- Certification Date
- February 10, 2026
- NPI Status
- Active
◉Business Practice Location Address
- Address
- 747 Broadway
Seattle, WA 98122-4379 - City
- Seattle
- State
- Washington
- ZIP
- 98122-4379
- Country
- US
- Phone Number
- 206-215-2520
- Fax Number
- 206-386-3180
✉Business Mailing Address
- Address
- Po Box 25608
Salt Lake City, UT 84125-0608 - City
- Salt Lake City
- State
- UT
- ZIP
- 84125-0608
- Phone Number
- 206-320-4476
✎Taxonomy & License Information
| Taxonomy | Code | Primary | License | State |
|---|---|---|---|---|
| Internal Medicine | 207R00000X | Yes | MD60476243 | WA |
| Hospitalist | 208M00000X | No | MD60476243 | WA |
#Other Provider Identifiers
No legacy or other identifiers (Medicaid, Medicare or plan IDs) are on file for this provider.
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View all providers in Seattle →?Frequently Asked Questions
What is the NPI number of Sidney H Allison, MD?
The NPI number of Sidney H Allison, MD is 1275893752. It was assigned on May 18, 2012 and is currently active in the NPPES registry.
What is the specialty of Sidney H Allison, MD?
Sidney H Allison, MD is registered under the primary taxonomy Internal Medicine (code 207R00000X) and holds license No. MD60476243 (WA).
Where does Sidney H Allison, MD practice?
The practice location is 747 Broadway, Seattle, WA 98122-4379. The office can be reached at 206-215-2520 (phone) or 206-386-3180 (fax).
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). It is used in HIPAA standard transactions.
How do I verify this NPI record?
This record is sourced from the public NPPES NPI Registry maintained by CMS. You can confirm it by searching NPI 1275893752 directly on the NPPES registry website at npiregistry.cms.hhs.gov.