Lillian Yao Chang
- Medicare services, 2024
- 55
- Medicare patients, 2024
- 70
- Part D claims, 2024
- 92
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040
- Practice phone
- Call (408) 739-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Mountain View
Surgery Center - Medicare-Certified · Mountain View, California
Find Lillian Chang'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.
Lillian Yao Chang is a physician assistant in Mountain View, California
Lillian Chang practices at Surgery Center Mountain View in Mountain View, California.
Lillian Chang's NPI, 1922630433, was assigned on February 12, 2020. Lillian Chang holds California license 59816.
- NPI
- 1922630433NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163818469
- NPI enumeration date
- February 12, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (408) 739-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Lillian Yao Chang practices at Surgery Center Mountain View in Mountain View, California
Lillian Chang's primary practice is Surgery Center Mountain View, at 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040. The practice phone is (408) 739-6000.
- Surgery Center Mountain View701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040Phone(408) 739-6000
Source: Dmand AI Affiliation Data
Lillian Yao Chang is affiliated with 2 sites of care and 1 medical group
Lillian Chang's primary practice is Surgery Center Mountain View in Mountain View, California. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Lillian Chang to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Lillian Yao Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Lillian Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Mountain View | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Lillian Yao Chang is one of 11,482 physician assistants in California
Physician assistant is Lillian Chang's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Lillian Chang is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Lillian Chang
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
Lillian Yao Chang billed Medicare for 55 services in 2024
CMS data shows 55 Medicare services from Lillian Chang across 2 procedure codes in 2024, all of them office visits, for 70 Medicare patients. Medicare paid $3,151 for them. Every service was in an office.
Lillian Chang compared with the California median for physician assistants, 2024
- Lillian Chang
- California median
- Medicare services
- 55vs 20473% below
- Medicare patients
- 70vs 10533% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Lillian Chang'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Lillian Yao Chang treated 70 Medicare patients in 2024, average age 78
CMS counts 70 Medicare patients who saw Lillian Chang in 2024. The largest group is 65 to 74, with 26 patients. 69% of them have high cholesterol, and 53% have high blood pressure. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Lillian Chang's median patient age at 54, with 62% women.
Lillian Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Lillian Chang's Medicare patients by sex, 2024
- Women4970%
- Men2130%
Chronic conditions among Lillian Chang's Medicare patients, 2024
- High cholesterol69%
- High blood pressure53%
- Arthritis30%
- Mood disorders21%
- Anxiety20%
- Chronic kidney disease20%
- Osteoporosis20%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Lillian Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Lillian Yao Chang wrote 92 Medicare Part D claims in 2024
In 2024, Lillian Chang wrote 92 Medicare Part D claims for 45 patients. 92% of them were for generic drugs.
Lillian Chang's Part D claims by kind of drug, 2024
- Generic85 claims92%
- Brand-name and other7 claims8%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Lillian Yao Chang offers telehealth to Medicare patients
Lillian Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Lillian Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Lillian Yao Chang'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 (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) |
| 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 Lillian Yao Chang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Lillian Yao Chang's NPI number?
Lillian Yao Chang's NPI number is 1922630433. It was assigned on February 12, 2020, and it is active in the NPI Registry.
What does Lillian Yao Chang specialize in?
Lillian Yao Chang is a physician assistant in Mountain View, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Lillian Yao Chang practice?
Lillian Chang practices at 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040. Lillian Chang's primary practice is Surgery Center Mountain View in Mountain View, California. Dmand AI also links Lillian Chang to 1 group practice or clinic.
What is Lillian Yao Chang's office phone number?
The practice phone on file for Lillian Chang is (408) 739-6000.
What is Lillian Yao Chang's medical license number?
Lillian Chang holds California license 59816.
What medical group is Lillian Yao Chang part of?
Lillian Chang is linked to Palo Alto Foundation Medical Group.
Does Lillian Yao Chang accept Medicare?
Yes. CMS data shows Lillian Chang billed Medicare for 55 services in 2024, and Lillian Chang accepts Medicare assignment.
Does Lillian Yao Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Lillian Chang as offering telehealth services.
How many Medicare patients does Lillian Yao Chang see?
CMS counts 70 Medicare patients who saw Lillian Chang in 2024, with an average age of 78.
What services does Lillian Yao Chang bill to Medicare?
In 2024, Lillian Chang's most billed Medicare services were office visit, established patient (99213) and office visit, new patient (99203).
How long has Lillian Yao Chang been practicing?
Lillian Chang graduated from medical school in 2021, 5 years ago.
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