Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1477110419 Individual Practitioner Male Practitioner

Dr. Peter Zajac , DO

Surgery • Moses Lake, WA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Peter Zajac, DO is a certified Surgery practicing in Moses Lake, WA. With approximately 7 years of clinical experience since graduating from Edward Via Col Of Osteo Medicine-Virginia Campus in 2019, Dr. Zajac delivers high-quality medical care to the local community at 1550 S PIONEER WAY.

Dr. Zajac maintains professional affiliations with Grant County Public Hospital District 1, Multicare Health System and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

1550 S Pioneer Way

Moses Lake, WA 988374613

Telephone 5097939792
Fax 5097643287
Associated Practice Facility / Clinic
🏢 Samaritan Inland Mri Llc Facility NPI 1376504803

Medicare Profile & Education

Medical School

Edward Via Col Of Osteo Medicine-Virginia Campus

Graduation Year

2019

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Moses Lake, WA

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
7 Yrs -9.4 yrs vs City Avg
City Avg: 16.4 Yrs
State Avg: 22.8 Yrs
Regional Practice Density
10 Specialists

Practicing in Moses Lake, WA (818 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Zajac (7 Years) 7 Yrs
Moses Lake Specialty Average (16.4 Years) 16.4 Yrs

Medical Specialties & State Licenses

CMS Verified: 2026-05-04
Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License WA OP61502695

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
2291811 (WA)

Hospital & Practice Group Affiliations

Grant County Public Hospital District 1

1550 S Pioneer Way, Moses Lake, WA 988374613

Phone: 5097939780

Multicare Health System

1901 S Union Ave, Tacoma, WA 984051702

Multicare Health System

4700 Point Fosdick Dr, Gig Harbor, WA 983351706

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

4 Associated Practitioners
NPI 1023464609

Doctor of Osteopathic Medicine (D.O.)

NPI 1487031753

Doctor of Osteopathic Medicine (D.O.)

NPI 1922567205

Doctor of Medicine (M.D.)

NPI 1952325474

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

10 Historical Events
📍
Updated Business Mailing Address May 04, 2026

Registered at 1616 S PIONEER WAY, MOSES LAKE, WA 988372487 (Tel: 5097939715)

📍
Updated Practice Location September 29, 2025

Registered at 1550 S PIONEER WAY, MOSES LAKE, WA 988374613 (Tel: 5097939792)

📍
Updated Business Mailing Address September 29, 2025

Registered at 660 S COOLIDGE ST, MOSES LAKE, WA 988371872 (Tel: 5097939715)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 29, 2025

Surgery (License #OP61502695 in WA)

NPI Profile Active May 24, 2019

NPI status registered as active in NPPES database

📍
Updated Practice Location May 24, 2019

Registered at 1301 S CRISMON RD, MESA, AZ 852093767 (Tel: 4803732370)

📍
Updated Business Mailing Address May 24, 2019

Registered at 1301 S CRISMON RD, MESA, AZ 852093767

👤
Provider Name / Credentials Updated May 24, 2019

Recorded as PETER ZAJAC, DO

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 24, 2019

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration May 24, 2019

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1477110419
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 24, 2019
Last Update: May 04, 2026
Sole Proprietor: No

Mailing Address

1616 S Pioneer Way

Moses Lake, WA 988372487

Phone: 5097939715

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.