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Lois Lin Chen , MS, CCC-SLP

Speech-Language Pathologist β€’ San Francisco, CA

Active NPI 1831680982 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

2340 Clay St Fl 5
San Francisco, CA 941151932

Call 4156000151 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

2340 Clay St Fl 5

San Francisco, CA 941151932

Telephone 4156000151
Fax 4153667559
Organization at the Same NPPES Address or Phone
Sutter Bay Medical Foundation Facility NPI 1003267196

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Sutter Bay Medical Foundation. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

2015

Years since graduation

11 years (graduated 2015)

CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2018

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

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

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Lois Chen has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Compared with the same specialty in San Francisco and California

444 active clinicians are listed under Speech-Language Pathologist with a practice address in San Francisco, CA (13,149 in California).

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

Telehealth indicator in San Francisco

1.1% of these 444 clinicians have the CMS telehealth indicator.

3.2% of these 444 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 Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-08-25
Speech-Language Pathologist Primary Specialty

NUCC Taxonomy Code: 235Z00000X

License # reported to NPPES CA 24460

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

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: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - QUALIFIED SPEECH LANGUAGE PATHOLOGIST

Medicare Enrollment ID

I20250519002662

Enrollment State Jurisdiction

CA

PECOS Control ID

9133647555

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Sutter Bay Medical Foundation

2340 Clay St, San Francisco, CA 941151932

Phone: 4156001020

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

5 listed
William Buis

Nurse Practitioner - Family

NPI 1326544347
Patrick Carpenter

Otolaryngology - Plastic Surgery within the Head & Neck

NPI 1154718179
Dr. Nicholas Dewyer , MD

Otolaryngology - Otology & Neurotology

NPI 1154671089

Doctor of Medicine (M.D.)

Craig Eldridge , PA-C

Physician Assistant

NPI 1366833840

Physician Assistant (Certified)

Dr. Katherine Yung , MD

Otolaryngology - Otolaryngology/Facial Plastic Surgery

NPI 1508985243

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
πŸ“
Updated Practice Location August 25, 2025

Registered at 2340 CLAY ST FL 5, SAN FRANCISCO, CA 941151932 (Tel: 4156000151)

πŸ“
Updated Business Mailing Address August 25, 2025

Registered at PO BOX 276950, SACRAMENTO, CA 958276950 (Tel: 4156000151)

βœ…
NPI Profile Active May 24, 2018

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) May 24, 2018

Registered at 400 PARNASSUS AVE # A-68, SAN FRANCISCO, CA 941432202 (Tel: 4153531984)

πŸ“
Business Mailing Address (Initial Record) May 24, 2018

Registered at 3205 MERRILL DR APT 25, TORRANCE, CA 905037182 (Tel: 3109383983)

πŸ‘€
Provider Name / Credentials (Initial Record) May 24, 2018

Recorded as LOIS CHEN, MS, CCC-SLP

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) May 24, 2018

Speech-Language Pathologist (license number reported to NPPES: CA 24460)

🟒
Initial NPI Registration & Enumeration May 24, 2018

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1831680982
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 24, 2018
Last Update: August 25, 2025
Sole Proprietor: No

Other Speech-Language Pathologists in San Francisco

Healthcare providers in San Francisco

Mailing Address

Po Box 276950

Sacramento, CA 958276950

Phone: 4156000151

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.