DR. MARK THOMAS SONDERMAN MD
NPI 1578128658
Internal Medicine in Seattle, WA

Q: What is Mark Sonderman's NPI number?

The NPI number for Mark Sonderman is 1578128658. It was assigned to this individual provider in the NPPES registry on May 5, 2019.

Q: What is Mark Sonderman's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Sonderman was last updated on May 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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 May 05, 2019PECOS Enrolled

97.12/100

CMS Quality Rating

1959 NE PACIFIC ST, SEATTLE, WA 98195(206) 520-5000 Get Directions Write a Review

NPPES record last updated: May 2, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 2, 2023, May 19, 2022, Jun 5, 2020 and 1 more (4 updates tracked since 2019).

On this page

About Dr. Mark Thomas Sonderman Md NPPES

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

DR. MARK THOMAS SONDERMAN MD (NPI 1578128658) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD61401126) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1578128658

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. MARK THOMAS SONDERMANCredential: MD

Location Address1959 NE PACIFIC STSeattle, WA 98195-0001

Mailing AddressPo Box 50095Seattle, WA 98145-5095 · (206) 520-5700

Phone(206) 520-5000

Sole ProprietorNo

Enumeration DateMay 5, 2019

Last NPPES UpdateMay 2, 20234 updates tracked since enumeration

NPPES CertifiedJuly 1, 2022

✔ NPI 1578128658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in WA · MD61401126✔ Licensed in TN · 63952

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.

1959 NE PACIFIC ST, Seattle, WA 98195

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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 (PECOS)

Dr. Mark Thomas Sonderman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

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 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.

38 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98195 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.

97.12/100

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

Scored through an Alternative Payment Model

Quality

85.64

Promoting Interoperability

100

Improvement Activities

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.

LEONIE A NEVILLE PHARMD

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (206) 598-4874

ALISA BETH KACHIKIS M.D.

Obstetrics & Gynecology (Maternal & Fetal Medicine)

1959 NE PACIFIC ST, 3RD FLOOR SW 350
SEATTLE, WA 98195

King County (206) 598-4070

MS. MARY PATRICIA DODGE MS, OTR/L

Occupational Therapist

1959 NE PACIFIC ST, MAILBOX 356490
SEATTLE, WA 98195

King County (206) 598-4830

RIKA SHIRAKAWA M.D.

Ophthalmology

1959 NE PACIFIC ST, BOX 365485
SEATTLE, WA 98195

King County (206) 558-9616

VEDA TSOI M.D.

Anesthesiology

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (801) 556-7628

KATHRYN TAMURA PHARM.D.

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

1959 NE PACIFIC ST, BOX 356015
SEATTLE, WA 98195

King County (206) 598-6060

DR. MARK ROBERT, MICHAEL KILGORE M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

1959 NE PACIFIC ST, BOX 356100
SEATTLE, WA 98195

King County (206) 598-1821

DR. SERKAN MEHMET SAHIN M.D.

Hospitalist

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (206) 543-6420

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 Mark Sonderman's NPI number?

The NPI number for Mark Sonderman is 1578128658. It was assigned to this individual provider in the NPPES registry on May 5, 2019.

Where is Mark Sonderman located?

Mark Sonderman practices at 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (206) 520-5000.

What is Mark Sonderman's specialty?

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

Is Mark Sonderman enrolled in Medicare?

Yes. Mark Sonderman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Sonderman was last updated on May 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.