Cheiny Shiau, PA-C

  • Los Angeles, CA
  • Physician assistant
NPI1477036895PAC ID3274928486
Medicare services, 2024
160
Medicare patients, 2024
106
Part D claims, 2024
1,844
Industry payments
$67,621
Affiliated sites
2
Practice address
420 East 3rd Street Suite 110, Los Angeles, CA 90013
Practice phone
Call (213) 617-9194
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Third Street Surgery Center

Surgery Center - Medicare-Certified · Los Angeles, California

See all 3 affiliations

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Cheiny Shiau is a physician assistant in Los Angeles, California

Cheiny Shiau practices at Third Street Surgery Center in Los Angeles, California.

Cheiny Shiau's NPI, 1477036895, was assigned on September 11, 2018.

NPI and contact details
Medicare PAC ID
3274928486
NPI enumeration date
September 11, 2018
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(213) 617-9194
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
34
Medical school graduation
2018

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Cheiny Shiau practices at Third Street Surgery Center in Los Angeles, California

Cheiny Shiau's primary practice is Third Street Surgery Center, at 420 East 3rd Street Suite 110, Los Angeles, CA 90013. The practice phone is (213) 617-9194.

  • Third Street Surgery Center
    420 East 3rd Street Suite 110, Los Angeles, CA 90013Phone(213) 617-9194

Source: Dmand AI Affiliation Data

Cheiny Shiau is affiliated with 2 sites of care and 1 medical group

Cheiny Shiau's primary practice is Third Street Surgery Center in Los Angeles, California. The medical group on file is Irradiance Medical Group Dermatology. Dmand AI also links Cheiny Shiau to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Cheiny Shiau

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Cheiny Shiau's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Cheiny Shiau practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Third Street Surgery CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Cheiny Shiau is one of 2,381 physician assistants in California

Medical is Cheiny Shiau's primary specialty in the NPI Registry, under taxonomy code 363AM0700X.

Specialties and state licenses

  • Medical physician assistantPrimarytaxonomy 363AM0700X
  • Surgical physician assistanttaxonomy 363AS0400X

Clinical focus

Dmand AI lists acne, benign or precancerous skin growths, contact dermatitis and skin discoloration among the conditions Cheiny Shiau treats.

Physician assistants near Cheiny Shiau

Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Cheiny Shiau billed Medicare for 160 services in 2024

CMS data shows 160 Medicare services from Cheiny Shiau across 5 procedure codes in 2024, for 106 Medicare patients. Medicare paid $8,271 for them. Every service was in an office.

Medicare services, 2024160
Medicare patients106
Paid by Medicare$8,271
Procedure codes5

Cheiny Shiau's Medicare services by type, 2024

  1. Office and hospital visits124
  2. Surgery36

Cheiny Shiau compared with the California median for physician assistants, 2024

  • Cheiny Shiau
  • California median
Medicare services
160vs 27842% below
Medicare patients
106vs 1169% below
Part D claims
1,674vs 4403.8 times

Medians across 1,473 physician assistants in California with Dmand AI profiles that report each measure.

Cheiny Shiau's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Cheiny Shiau

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Cheiny Shiau treated 106 Medicare patients in 2024, average age 72

CMS counts 106 Medicare patients who saw Cheiny Shiau in 2024. The largest group is 65 to 74, with 61 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 74% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Cheiny Shiau's median patient age at 45, with 55% women.

Medicare patients, 2024106
Average age72
Average risk score1.24
Also on Medicaid74%

Cheiny Shiau's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Cheiny Shiau's Medicare patients by sex, 2024

  • Women5047%
  • Men5653%

Chronic conditions among Cheiny Shiau's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes50%
  4. Arthritis40%
  5. Chronic kidney disease32%
  6. Ischemic heart disease28%
  7. Anxiety20%
  8. Mood disorders17%

Share of Medicare patients with each condition. A patient can have several.

Cheiny Shiau's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 45

Patient panel by sex, all payers

  • Women55%
  • Men45%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Cheiny Shiau wrote 1,844 Medicare Part D claims in 2024

In 2024, Cheiny Shiau wrote 1,844 Medicare Part D claims for 331 patients. 71% of them were for generic drugs. CMS names the drug for 1,674 of them, across 34 drugs with 11 or more claims each, at $3,019,417 in total drug cost.

Part D claims, 20241,844
Drugs named by CMS34
Total drug cost$3M
Part D patients331

Cheiny Shiau's Part D claims by kind of drug, 2024

  • Generic1,308 claims71%
  • Brand-name536 claims29%

Cheiny Shiau's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Cheiny Shiau's Part D claims, 2024

  • Antibiotics2%34 of 1,844 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Cheiny Shiau

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Cheiny Shiau takes part in Medicare

Cheiny Shiau accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

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Cheiny Shiau received $67,621 in industry payments from 2024 to 2025

CMS Open Payments shows 785 general payments to Cheiny Shiau from 21 drug and device companies from 2024 to 2025. Speaker and faculty fees make up the largest share, 63% of the total. Abbvie Inc. paid the most, $27,748.

General payments to Cheiny Shiau by program year, 2024 to 2025

General payments to Cheiny Shiau by kind, 2024 to 2025

$67.6Kin total
  • Speaker and faculty fees$42,40563%
  • Food and beverage$18,83128%
  • Travel and lodging$5,4138%
  • Consulting fees$5001%
  • Other$4731%

Companies that paid Cheiny Shiau the most, 2024 to 2025

Share is of all general payments to this clinician.

See all payments to Cheiny Shiau

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Cheiny Shiau's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Cheiny Shiau

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Cheiny Shiau's NPI number?

Cheiny Shiau's NPI number is 1477036895. It was assigned on September 11, 2018, and it is active in the NPI Registry.

What does Cheiny Shiau specialize in?

Cheiny Shiau is a physician assistant in Los Angeles, California. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).

Where does Cheiny Shiau practice?

Cheiny Shiau practices at 420 East 3rd Street Suite 110, Los Angeles, CA 90013. Cheiny Shiau's primary practice is Third Street Surgery Center in Los Angeles, California. Dmand AI also links Cheiny Shiau to 1 group practice or clinic.

What is Cheiny Shiau's office phone number?

The practice phone on file for Cheiny Shiau is (213) 617-9194.

What medical group is Cheiny Shiau part of?

Cheiny Shiau is linked to Irradiance Medical Group Dermatology.

Does Cheiny Shiau accept Medicare?

Yes. CMS data shows Cheiny Shiau billed Medicare for 160 services in 2024, and Cheiny Shiau accepts Medicare assignment.

How many Medicare patients does Cheiny Shiau see?

CMS counts 106 Medicare patients who saw Cheiny Shiau in 2024, with an average age of 72.

What services does Cheiny Shiau bill to Medicare?

In 2024, Cheiny Shiau's most billed Medicare services were office visit, established patient (99214), surgery: skin and soft tissue (17110) and office visit, established patient (99213).

What drugs does Cheiny Shiau prescribe most?

In 2024 Medicare Part D data, Cheiny Shiau's most prescribed drugs by claims were Fluocinonide, Triamcinolone Acetonide and Dupixent Pen.

Has Cheiny Shiau received payments from drug or device companies?

CMS Open Payments shows $67,621 in general payments to Cheiny Shiau from 21 companies from 2024 to 2025. The largest total came from Abbvie Inc.

How long has Cheiny Shiau been practicing?

Cheiny Shiau graduated from medical school in 2018, 8 years ago.

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