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Ariel Haydee Chan , PA-C

Physician Assistant β€’ Pasadena, CA

Active NPI 1942983226 Individual Practitioner Female Practitioner
Practice location in NPPES

909 S Fair Oaks Ave
Pasadena, CA 911052625

Call 6263899300 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

909 S Fair Oaks Ave

Pasadena, CA 911052625

Telephone 6263899300
Organization at the Same NPPES Address or Phone
Aids Service Center Facility NPI 1659585834

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

NPPES lists 1 additional practice-address record in San Diego, CA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

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

Industry payments (Open Payments)

Fewer than 11 payment records totaling $46.15 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

NPI first issued

2023

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, β€œDoes 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

Enrolled in Medicare (PECOS)

Ariel Chan 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

Can order Medicare-covered services

CMS lists Ariel Chan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

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

Guide: What ordering and referring status means

Compared with the same specialty in Pasadena and California

88 active clinicians are listed under Physician Assistant with a practice address in Pasadena, CA (14,458 in California).

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

Telehealth indicator in Pasadena

10.2% of these 88 clinicians have the CMS telehealth indicator.

40.9% of these 88 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $46.15.

Manufacturer Payment Nature Product Type Amount ($)
Vericel Corporation
Food and Beverage
In-kind items and services
β€” General $46.15

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-02-04
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

License # reported to NPPES CA 65841

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Student in an Organized Health Care Education/Training Program

NUCC Taxonomy Code: 390200000X

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

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 - PHYSICIAN ASSISTANT

Medicare Enrollment ID

I20250502002442

Enrollment State Jurisdiction

CA

PECOS Control ID

9931626942

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

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

Secondary Practice Locations

9055 Balboa Ave

San Diego, CA 921231509

Phone: 6198497950

Clinicians Sharing This Practice Address or Phone

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

1 listed
Dr. Caroline Yao , MD

Plastic Surgery

NPI 1790041697

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

9 Historical Events
πŸ“
Updated Practice Location February 04, 2025

Registered at 909 S FAIR OAKS AVE, PASADENA, CA 911052625 (Tel: 6263899300)

πŸ“
Updated Business Mailing Address February 04, 2025

Registered at 455 SHARON RD, ARCADIA, CA 910077951

πŸ‘€
Provider Name / Credentials Updated February 04, 2025

Recorded as ARIEL CHAN, PA-C

βœ…
NPI Profile Active August 11, 2023

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) August 11, 2023

Registered at 9055 BALBOA AVE, SAN DIEGO, CA 921231509 (Tel: 6198497950)

πŸ“
Business Mailing Address (Initial Record) August 11, 2023

Registered at 9055 BALBOA AVE, SAN DIEGO, CA 921231509

πŸ‘€
Provider Name / Credentials (Initial Record) August 11, 2023

Recorded as ARIEL CHAN, PA-S

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) August 11, 2023

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration August 11, 2023

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1942983226
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 11, 2023
Last Update: February 04, 2025
Sole Proprietor: Yes

Other Physician Assistants in Pasadena

All Physician Assistants in Pasadena

Mailing Address

455 Sharon Rd

Arcadia, CA 910077951

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.