Dr. Hellen Chiao, MD
- Medicare services, 2024
- 534
- Medicare patients, 2024
- 255
- Part D claims, 2024
- 600
- Hospital affiliations
- 1
- Industry payments
- $12,520
- Practice address
- 3923 Waring Road Ste A, Oceanside, CA 92056
- Practice phone
- Call (619) 724-8782
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
North County Gastroenterology
Clinical Lab - Basic Testing Only · Oceanside, California
Find Dr. Chiao's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Hellen Chiao is a gastroenterologist in Oceanside, California
Dr. Chiao practices at North County Gastroenterology in Oceanside, California.
Dr. Chiao's NPI, 1154681435, was assigned on May 21, 2012. Dr. Chiao graduated from Medical College of Wisconsin in 2012. Dr. Chiao holds California license A127722.
- NPI
- 1154681435NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890913750
- NPI enumeration date
- May 21, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (619) 724-8782
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hellen Chiao practices at North County Gastroenterology in Oceanside, California
Dr. Chiao's primary practice is North County Gastroenterology, at 3923 Waring Road Ste A, Oceanside, CA 92056. The practice phone is (619) 724-8782.
- North County Gastroenterology3923 Waring Road Ste A, Oceanside, CA 92056Phone(619) 724-8782
Source: Dmand AI Affiliation Data
Dr. Hellen Chiao is affiliated with 3 sites of care and 1 medical group
Dr. Chiao's primary practice is North County Gastroenterology in Oceanside, California. Dr. Chiao is also affiliated with Sharp Tri-City Medical Center. The medical group on file is North County Gastroenterology. Dmand AI also links Dr. Chiao to 1 more group practice or clinic, named with a free account. Dr. Chiao's employer is on file too: a clinical lab.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hellen Chiao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiao practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| North County Gastroenterology | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hellen Chiao is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Chiao's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Chiao is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Chiao
Counts of gastroenterologists 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
Dr. Hellen Chiao billed Medicare for 534 services in 2024
CMS data shows 534 Medicare services from Dr. Chiao across 11 procedure codes in 2024, for 255 Medicare patients. Medicare paid $53,009 for them.
Dr. Chiao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2072024: 26528%
- Surgery
- 2023: 1592024: 22240%
- Other services
- 2023: 162024: 47194%
Where Dr. Chiao's Medicare services took place, 2024
- In an office22442%
- In a facility31058%
Dr. Chiao compared with the California median for gastroenterologists, 2024
- Dr. Chiao
- California median
- Medicare services
- 534vs 5869% below
- Medicare patients
- 255vs 30216% below
- Part D claims
- 468vs 38023% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Chiao'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chiao and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hellen Chiao treated 255 Medicare patients in 2024, average age 73
CMS counts 255 Medicare patients who saw Dr. Chiao in 2024. The largest group is 65 to 74, with 146 patients. 73% of them have high cholesterol, and 65% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chiao's median patient age at 63, with 72% women.
Dr. Chiao's Medicare patients by age, 2024
Dr. Chiao's Medicare patients by sex, 2024
- Women17669%
- Men7931%
Chronic conditions among Dr. Chiao's Medicare patients, 2024
- High cholesterol73%
- High blood pressure65%
- Arthritis44%
- Diabetes27%
- Ischemic heart disease26%
- Mood disorders21%
- Osteoporosis21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chiao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hellen Chiao wrote 600 Medicare Part D claims in 2024
In 2024, Dr. Chiao wrote 600 Medicare Part D claims for 342 patients. 85% of them were for generic drugs. CMS names the drug for 468 of them, across 10 drugs with 11 or more claims each, at $98,241 in total drug cost. In 2023, CMS named 424 claims across 10 drugs.
Dr. Chiao's Part D claims by kind of drug, 2024
- Generic512 claims85%
- Brand-name88 claims15%
Dr. Chiao'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 Dr. Chiao's Part D claims, 2024
- Antibiotics7%40 of 600 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4242024: 46810%
Drugs named by CMS: 10 in 2024, 10 in 2023.
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
Dr. Hellen Chiao ranks in the 69th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Chiao accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chiao as offering telehealth. CMS counts 68 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Chiao, more than 69% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Chiao ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 69th percentile68 procedures
- Colonoscopy
- 61st percentile44 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Hellen Chiao received $12,520 in industry payments from 2016 to 2025
CMS Open Payments shows 569 general payments to Dr. Chiao from 39 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Abbvie Inc. paid the most, $4,214.
General payments to Dr. Chiao by program year, 2016 to 2025
General payments to Dr. Chiao by kind, 2016 to 2025
- Food and beverage$12,00996%
- Education$2562%
- Travel and lodging$2542%
Companies that paid Dr. Chiao the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hellen Chiao graduated from Medical College of Wisconsin
Dr. Chiao graduated from Medical College of Wisconsin in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hellen Chiao's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Hellen Chiao
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Hellen Chiao's NPI number?
Dr. Hellen Chiao's NPI number is 1154681435. It was assigned on May 21, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Hellen Chiao?
Dr. Hellen Chiao is a gastroenterologist in Oceanside, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Hellen Chiao practice?
Dr. Chiao practices at 3923 Waring Road Ste A, Oceanside, CA 92056. Dr. Chiao's primary practice is North County Gastroenterology in Oceanside, California. Dmand AI also links Dr. Chiao to 1 group practice or clinic.
What is Dr. Hellen Chiao's office phone number?
The practice phone on file for Dr. Chiao is (619) 724-8782.
What is Dr. Hellen Chiao's medical license number?
Dr. Chiao holds California license A127722.
Which hospitals is Dr. Hellen Chiao affiliated with?
Dr. Chiao is affiliated with Sharp Tri-City Medical Center.
What medical group is Dr. Hellen Chiao part of?
Dr. Chiao is linked to North County Gastroenterology.
Does Dr. Hellen Chiao accept Medicare?
Yes. CMS data shows Dr. Chiao billed Medicare for 534 services in 2024, and Dr. Chiao accepts Medicare assignment.
Does Dr. Hellen Chiao offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chiao as offering telehealth services.
How many Medicare patients does Dr. Hellen Chiao see?
CMS counts 255 Medicare patients who saw Dr. Chiao in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Hellen Chiao bill to Medicare?
In 2024, Dr. Chiao's most billed Medicare services were surgery: digestive system (45380), office visit, established patient (99214) and office visit, new patient (99204).
Where did Dr. Hellen Chiao go to medical school?
Dr. Chiao graduated from Medical College of Wisconsin in 2012.
What drugs does Dr. Hellen Chiao prescribe most?
In 2024 Medicare Part D data, Dr. Chiao's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole and Famotidine.
Has Dr. Hellen Chiao received payments from drug or device companies?
CMS Open Payments shows $12,520 in general payments to Dr. Chiao from 39 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Hellen Chiao been practicing?
Dr. Chiao graduated from medical school in 2012, 14 years ago.
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