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SIDNEY H ALLISON MD
NPI 1275893752
Internal Medicine in Seattle, WA

Active since May 18, 2012PECOS Enrolled
747 BROADWAY, SEATTLE, WA 98122(206) 215-2520(206) 386-3180 Get Directions Write a Review

NPPES record last updated: February 10, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 21, 2022, Jul 6, 2021, May 5, 2021 and 4 more (7 updates tracked since 2017).

About Sidney H Allison Md NPPES

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

SIDNEY H ALLISON MD (NPI 1275893752) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD60476243) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center / Cherry Hill, and is a graduate of Other (2012).

NPPES Registry Identity

NPI1275893752
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameSIDNEY H ALLISONCredential: MD
Location Address747 BROADWAYSeattle, WA 98122-4379
Mailing AddressPo Box 25608Salt Lake City, UT 84125-0608 · (206) 320-4476
Phone(206) 215-2520
Fax(206) 386-3180
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateMay 18, 2012
Last NPPES UpdateFebruary 10, 20267 updates tracked since enumeration
NPPES CertifiedFebruary 10, 2026
✔ NPI 1275893752 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD60476243
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License MD60476243 (WA)
747 BROADWAY, Seattle, WA 98122
Open in Google Maps ↗

Other Identifiers 1

Medicaid2029080WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, CareSource, Premera Blue Cross Blue Shield of Alaska and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sidney H Allison Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2264709377
PECOS Enrollment IDI20170525002692, I20250205003011
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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
192 services50 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
83 services82 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
43 services19 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
17 services17 patients

Hospital Affiliations CMS Care Compare 4

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

Swedish Medical Center / Cherry Hill

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500025
Location500 17th AvenueSeattle, WA 98122 · King County
Emergency services

Swedish Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500027
Location747 BroadwaySeattle, WA 98122 · King County
Emergency services Birthing friendly

Valley Medical Center

Acute Care Hospitals · Renton, WA
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number500088
Location400 S 43rd StRenton, WA 98055 · King County
Emergency services Birthing friendly

Swedish Issaquah

Acute Care Hospitals · Issaquah, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500152
Location751 NE Blakely DrIssaquah, WA 98029 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98122 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
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%78 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

ASHLEY NICOLE WILSON PHARMD.
Pharmacist
747 BROADWAY, ATTN: INPATIENT PHARMACY
SEATTLE, WA 98122
King County (206) 215-6283
MOHAMMAD IFFAT KABIR ANINDO MD
Internal Medicine
747 BROADWAY
SEATTLE, WA 98122
King County (206) 215-2520
DR. RICHARD KADERA MD
Hospitalist
747 BROADWAY
SEATTLE, WA 98122
King County (206) 215-2520
ROBERT C HANSEN MD
Hospitalist
747 BROADWAY
SEATTLE, WA 98122
King County (206) 215-2520
DR. ELIZABETH JEAN POTTER MD
Internal Medicine
747 BROADWAY
SEATTLE, WA 98122
King County (206) 215-2520
MR. BOBBY WALKER HOLLOWELL CPHT
Pharmacy Technician
747 BROADWAY
SEATTLE, WA 98122
King County (206) 386-6150
JOHN CAMPBELL MD
Radiology (Vascular & Interventional Radiology)
747 BROADWAY, HEATH BUILDING 10TH FLOOR
SEATTLE, WA 98122
King County (206) 215-4253
DAVID ROMANET PHARMD
Pharmacist
747 BROADWAY
SEATTLE, WA 98122
King County (602) 312-2220

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sidney Allison's NPI number?

The NPI number for Sidney Allison is 1275893752. It was assigned to this individual provider in the NPPES registry on May 18, 2012.

Where is Sidney Allison located?

Sidney Allison practices at 747 Broadway, Seattle, WA 98122. The listed phone number is (206) 215-2520.

What is Sidney Allison's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Sidney Allison enrolled in Medicare?

Yes. Sidney Allison is registered in the Medicare PECOS enrollment system.

What insurance does Sidney Allison accept?

Health plans from Blue Cross and Blue Shield of Texas, CareSource, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Sidney Allison as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Sidney Allison affiliated with any hospitals?

According to CMS data, Sidney Allison is affiliated with Swedish Medical Center / Cherry Hill, Swedish Medical Center, Valley Medical Center and Swedish Issaquah.

When was this NPI record last updated?

The NPPES record for Sidney Allison was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.