ZACHARY CHARLES MATTES M.D.
NPI 1841644432
Hospitalist in Seattle, WA

Active since April 20, 2016PECOS EnrolledAccepts Medicare Assignment
1101 MADISON ST STE 301, SEATTLE, WA 98104(206) 505-1300 Get Directions Write a Review

NPPES record last updated: June 17, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 17, 2021, Apr 6, 2021, Jul 26, 2019 and 1 more (4 updates tracked since 2019).

About Zachary Charles Mattes M.d. NPPES

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

ZACHARY CHARLES MATTES M.D. (NPI 1841644432) is an individual hospitalist provider in Seattle, Washington, licensed in Washington (MD60974864) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with St Joseph Medical Center, and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1841644432
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameZACHARY CHARLES MATTESCredential: M.D.
Location Address1101 MADISON ST STE 301Seattle, WA 98104-3599
Mailing Address925 Seneca StSeattle, WA 98101-2742 · (206) 341-0638
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 2016
Enumeration DateApril 20, 2016
Last NPPES UpdateJune 17, 20214 updates tracked since enumeration
NPPES CertifiedJune 17, 2021
NPI 1841644432 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License Licensed in WA · MD60974864
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD60974864 (WA)
1101 MADISON ST STE 301, Seattle, WA 98104

Secondary Practice Location 1

Location 1Virginia Mason Medical Center 925 Seneca StSeattle, WA 98101 · Phone (206) 515-5811

Accepted Insurance

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

Zachary Charles Mattes M.d. 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 ID1254624398
PECOS Enrollment IDI20201201002656
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 5

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.
262 services133 patients
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.
173 services119 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
97 services97 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
36 services21 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.
18 services18 patients

Hospital Affiliations CMS Care Compare 2

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

St Joseph Medical Center

Acute Care Hospitals · Tacoma, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500108
Location1717 South J StreetTacoma, WA 98405 · Pierce County
Emergency services Birthing friendly

St Francis Community Hospital

Acute Care Hospitals · Federal Way, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500141
Location34515 9th Avenue SFederal Way, WA 98003 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98104 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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier11 claims11 services$783.27 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Social Worker (Clinical)
1101 MADISON ST STE 301
SEATTLE, WA 98104
Internal Medicine
1101 MADISON ST STE 301
SEATTLE, WA 98104
Clinic/Center (Infusion Therapy)
1101 MADISON ST STE 301
SEATTLE, WA 98104
Social Worker
1101 MADISON ST STE 301
SEATTLE, WA 98104
Internal Medicine (Hematology & Oncology)
1101 MADISON ST STE 301
SEATTLE, WA 98104
Clinic/Center (Multi-Specialty)
1101 MADISON ST STE 301
SEATTLE, WA 98104
Urology
1101 MADISON ST STE 301
SEATTLE, WA 98104
Surgery
1101 MADISON ST STE 301
SEATTLE, WA 98104

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 Zachary Mattes's NPI number?

The NPI number for Zachary Mattes is 1841644432. It was assigned to this individual provider in the NPPES registry on April 20, 2016.

Where is Zachary Mattes located?

Zachary Mattes practices at 1101 Madison St Ste 301, Seattle, WA 98104. The listed phone number is (206) 505-1300.

What is Zachary Mattes's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Zachary Mattes enrolled in Medicare?

Yes. Zachary Mattes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Zachary Mattes accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Zachary Mattes 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 Zachary Mattes affiliated with any hospitals?

According to CMS data, Zachary Mattes is affiliated with St Joseph Medical Center and St Francis Community Hospital.

When was this NPI record last updated?

The NPPES record for Zachary Mattes was last updated on June 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.