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Timothy Michael Pierson , RD

Dietitian, Registered • Bothell, WA

Active NPI 1053235002 Individual Practitioner Male Practitioner
Practice location in NPPES

9911 Main St Apt 687
Bothell, WA 980113580

Call 8018592837 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

9911 Main St Apt 687

Bothell, WA 980113580

Telephone 8018592837

NPI first issued

2026

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Bothell and Washington

23 active clinicians are listed under Dietitian, Registered with a practice address in Bothell, WA (2,134 in Washington).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Bothell

0% of these 23 clinicians have the CMS telehealth indicator.

8.7% of these 23 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-08-04
Dietitian, Registered Primary Specialty

NUCC Taxonomy Code: 133V00000X

A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Washington State Department of Health Provider Lookup.
Look Up on State Board Site

Career & Practice History

NPI enumerated August 04, 2026.

This record first appears in the August 2026 NPPES data file, the latest one loaded here, so there is no change history for it yet.

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NPI Administrative Meta

NPI Number: 1053235002
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 04, 2026
Last Update: August 04, 2026
Sole Proprietor: Yes

Other Dietitian, Registereds in Bothell

Healthcare providers in Bothell

Mailing Address

9911 Main St Apt 687

Bothell, WA 980113580

Phone: 8018592837

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.