WILLIAM THOMAS SIMONSON MD PHD
NPI 1306080262
Pathology - Anatomic Pathology & Clinical Pathology in Tacoma, WA

Q: What is William Simonson's NPI number?

The NPI number for William Simonson is 1306080262. It was assigned to this individual provider in the NPPES registry on April 22, 2009.

Q: What is William Simonson's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for William Simonson was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 22, 2009PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

315 MARTIN LUTHER KING JR WAY, WESTERN WASHINGTON PATHOLOGY, TACOMA, WA 98405(253) 403-1043 Get Directions Write a Review

NPPES record last updated: February 27, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About William Thomas Simonson Md Phd NPPES

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

WILLIAM THOMAS SIMONSON MD PHD (NPI 1306080262) is an individual anatomic pathology & clinical pathology provider in Tacoma, Washington, licensed in Washington (MD60295980) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS, is affiliated with Multicare Auburn Medical Center, and is a graduate of University Of Wisconsin School Of Medicine (2009).

NPPES Registry Identity

NPI1306080262

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameWILLIAM THOMAS SIMONSONCredential: MD PHD

Location Address315 MARTIN LUTHER KING JR WAY, WESTERN WASHINGTON PATHOLOGYTacoma, WA 98405-4234

Mailing Address315 Martin Luther King Jr Way, Western Washington PathologyTacoma, WA 98405-4234 · (253) 403-1043

Phone(253) 403-1043

Sole ProprietorNo

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2009

Enumeration DateApril 22, 2009

Last NPPES UpdateFebruary 27, 2026

NPPES CertifiedFebruary 27, 2026

✔ NPI 1306080262 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

Licenses✔ Licensed in WA · MD60295980✔ Licensed in AZ · 79372

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

315 MARTIN LUTHER KING JR WAY, Tacoma, WA 98405

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Thomas Simonson Md Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4688894512

PECOS Enrollment IDI20140927000595, I20260317000679

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 30

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.

Protein measurement, serum 84165

A serum protein measurement is a blood test that determines the levels of proteins in your blood. It is used to evaluate your overall health, and diagnose nutritional problems, kidney disease, liver disease, or immune disorders.

339 services316 patients

Protein measurement, serum 84165

317 services251 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

312 services192 patients

Immunologic analysis technique on serum (immunofixation) 86334

Immunofixation is a lab test that helps identify proteins called immunoglobulins in your blood serum. These proteins are part of your immune system. Changes in their levels can indicate certain diseases. The test is simple and only requires a blood sample.

203 services192 patients

Immunologic analysis technique on serum (immunofixation) 86334

199 services172 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

139 services36 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

126 services120 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

93 services57 patients

Protein measurement, body fluid 84166

A protein measurement of body fluid is a test that gauges the amount of proteins in your fluids. This analysis helps in detecting various health conditions. It's done via a simple sample collection process, usually from blood or urine, in a safe and painless manner.

89 services70 patients

Flow cytometry technique for dna or cell analysis, 16 or more markers 88189

Flow cytometry is a method used to measure and analyze cells. It uses a beam of light to detect up to 16 or more markers on cells, helping to identify their type, function, or abnormalities. This technique aids in diagnosing various health conditions.

77 services70 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

71 services67 patients

Protein measurement, body fluid 84166

67 services63 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

65 services46 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

58 services44 patients

Cell examination of specimen, selective cellular enhancement technique 88112

Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.

57 services56 patients

Bone marrow, smear interpretation 85097

Bone marrow smear interpretation is a procedure where a small sample of your bone marrow is taken and examined under a microscope. This helps doctors identify any abnormal cells or signs of diseases such as anemia, leukemia, or infections. It's a crucial step in diagnosing various blood disorders.

51 services51 patients

Biopsy and aspiration of bone marrow sample for diagnosis 38222

A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.

48 services48 patients

Flow cytometry technique for dna or cell analysis, 9 to 15 markers 88188

Flow cytometry is a technique used to measure physical and chemical characteristics of cells or particles. It can analyze multiple markers (9 to 15) on a cell, helping to identify its type and function. This process can also examine DNA within cells for any abnormalities.

43 services39 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

43 services41 patients

Flow cytometry technique for dna or cell analysis, 16 or more markers 88189

38 services37 patients

Coagulation function screening test with interpretation and report 85390

A coagulation function screening test is a type of blood test that checks how well your blood clots. It's important because clotting helps prevent excessive bleeding. The test results are interpreted and a report is provided to help guide your doctor's treatment plan.

34 services31 patients

Coagulation function screening test with interpretation and report 85390

23 services21 patients

Microscopic genetic analysis of tumor, manual 88360

23 services12 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

21 services12 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

21 services17 patients

Bone marrow, smear interpretation 85097

18 services18 patients

Preparation of tissue for examination by removing any calcium present 88311

17 services17 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

16 services15 patients

Biopsy and aspiration of bone marrow sample for diagnosis 38222

15 services15 patients

Hemoglobin analysis and measurement, electrophoresis 83020

Hemoglobin analysis and measurement, electrophoresis, is a lab test that separates and identifies proteins in your blood. It's used to diagnose conditions affecting red blood cells. It's a simple, painless procedure where a small blood sample is taken and analyzed.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Multicare Auburn Medical Center

Acute Care Hospitals · Auburn, WA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500015

Location202 North Division Street Plaza OneAuburn, WA 98001 · King County

Emergency services Birthing friendly

Deaconess Medical Center

Acute Care Hospitals · Spokane, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500044

LocationW 800 Fifth AvenueSpokane, WA 99210 · Spokane County

Emergency services Birthing friendly

Multicare Good Samaritan Hospital

Acute Care Hospitals · Puyallup, WA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500079

Location401 15th Avenue SEPuyallup, WA 98372 · Pierce County

Emergency services Birthing friendly

Tacoma General Allenmore Hospital

Acute Care Hospitals · Tacoma, WA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500129

Location315 S Mlk Jr WayTacoma, WA 98405 · Pierce County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98405 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

$130.99 typical visit price

range $57.27 – $172.80

Typical copayment $32.74 (range $14.31 – $43.20)

Most-billed visit code 99204

Established Patient

$100.78 typical visit price

range $18.56 – $141.11

Typical copayment $25.19 (range $4.64 – $35.27)

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.

75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Reported Quality Measures

Quantitative Immunohistochemical (IHC) Evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) for Breast Cancer Patients

This is a measure based on whether quantitative evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) by immunohistochemistry (IHC) uses the system recommended in the current ASCO/CAP Guidelines for Human Epidermal Growth Factor Receptor 2…

100%21 patients

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.

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