Dr. Amy Li-Yen Peng, MD
- Medicare services, 2024
- 15
- Medicare patients, 2024
- 43
- Part D claims, 2024
- 18
- Hospital affiliations
- 2
- Industry payments
- $120
- Practice address
- 100 W. California Blvd, Pasadena, CA 91105
- Practice phone
- Call (626) 397-2618
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Huntington Hospital - Unit
Acute Care Hospital-Unit · Pasadena, California
Find Dr. Peng'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. Amy Li-Yen Peng is an emergency medicine physician in Pasadena, California
Dr. Peng practices at Huntington Hospital - Unit in Pasadena, California.
Dr. Peng's NPI, 1578546479, was assigned on November 23, 2005. Dr. Peng graduated from UC Irvine School of Medicine in 1997. Dr. Peng holds California license A68677.
- NPI
- 1578546479NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941257927
- NPI enumeration date
- November 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 397-2618
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Amy Li-Yen Peng practices at Huntington Hospital - Unit in Pasadena, California
Dr. Peng's primary practice is Huntington Hospital - Unit, at 100 W. California Blvd, Pasadena, CA 91105 in Los Angeles County. The practice phone is (626) 397-2618.
- Huntington Hospital - Unit100 W. California Blvd, Pasadena, CA 91105 · Los Angeles CountyPhone(626) 397-2618
Source: Dmand AI Affiliation Data
Dr. Amy Li-Yen Peng is affiliated with 3 sites of care and 4 medical groups
Dr. Peng's primary practice is Huntington Hospital - Unit in Pasadena, California. Dr. Peng is also affiliated with Huntington Hospital. The medical group on file is Facey Medical Group. Dmand AI also links Dr. Peng to 3 more medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Amy Li-Yen Peng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peng practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Huntington Hospital - Unit | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Amy Li-Yen Peng is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Peng's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Peng is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Peng is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Peng
Counts of emergency medicine physicians 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. Amy Li-Yen Peng billed Medicare for 15 services in 2024
CMS data shows 15 Medicare services from Dr. Peng across 1 procedure code in 2024, for 43 Medicare patients. Medicare paid $2,110 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Peng's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 132024: 1515%
- Tests and treatments
- 2023: 182024: 0100%
Dr. Peng compared with the California median for emergency medicine physicians, 2024
- Dr. Peng
- California median
- Medicare services
- 15vs 26594% below
- Medicare patients
- 43vs 24382% below
- Part D claims
- 13vs 6279% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Peng'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.
Need commercial claims for Dr. Peng?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Peng and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Amy Li-Yen Peng treated 43 Medicare patients in 2024, average age 77
CMS counts 43 Medicare patients who saw Dr. Peng in 2024. The largest group is 75 to 84, with 18 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Peng's median patient age at 31, with 62% women.
Dr. Peng's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Peng's Medicare patients by sex, 2024
- Women2353%
- Men2047%
Chronic conditions among Dr. Peng's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes47%
- Chronic kidney disease40%
- Cancer35%
- Ischemic heart disease35%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Peng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 31
Patient panel by sex, all payers
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Amy Li-Yen Peng wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Peng wrote 18 Medicare Part D claims for 14 patients. 94% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $115 in total drug cost. In 2016, CMS named 16 claims across 1 drug.
Dr. Peng's Part D claims by kind of drug, 2024
- Generic17 claims94%
- Brand-name and other1 claims6%
Dr. Peng's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2020
- 2016
- 2020
- Claims for drugs CMS names
- 2016: 162020: 1319%
Drugs named by CMS: 1 in 2020, 1 in 2016.
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 Dr. Amy Li-Yen Peng takes part in Medicare
Dr. Peng 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)
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Dr. Amy Li-Yen Peng received $120 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Peng from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $120.
Companies that paid Dr. Peng the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Amy Li-Yen Peng graduated from UC Irvine School of Medicine
Dr. Peng graduated from UC Irvine School of Medicine in 1997. Dr. Peng is a member of AAEM.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Amy Li-Yen Peng accepts plans from 14 insurance carriers
Dr. Peng is in network with 14 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Peng accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Amy Li-Yen Peng'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Amy Li-Yen Peng
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. Amy Li-Yen Peng's NPI number?
Dr. Amy Li-Yen Peng's NPI number is 1578546479. It was assigned on November 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Amy Li-Yen Peng?
Dr. Amy Li-Yen Peng is an emergency medicine physician in Pasadena, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Amy Li-Yen Peng practice?
Dr. Peng practices at 100 W. California Blvd, Pasadena, CA 91105. Dr. Peng's primary practice is Huntington Hospital - Unit in Pasadena, California. Dmand AI also links Dr. Peng to 3 medical groups and 1 group practice or clinic.
What is Dr. Amy Li-Yen Peng's office phone number?
The practice phone on file for Dr. Peng is (626) 397-2618.
What is Dr. Amy Li-Yen Peng's medical license number?
Dr. Peng holds California license A68677.
Which hospitals is Dr. Amy Li-Yen Peng affiliated with?
Dr. Peng is affiliated with Huntington Hospital. Dmand AI links Dr. Peng to 1 more hospital.
What medical group is Dr. Amy Li-Yen Peng part of?
Dr. Peng is linked to Facey Medical Group. Dmand AI links Dr. Peng to 3 more medical groups.
Does Dr. Amy Li-Yen Peng accept Medicare?
Yes. CMS data shows Dr. Peng billed Medicare for 15 services in 2024, and Dr. Peng accepts Medicare assignment.
How many Medicare patients does Dr. Amy Li-Yen Peng see?
CMS counts 43 Medicare patients who saw Dr. Peng in 2024, with an average age of 77.
Is Dr. Amy Li-Yen Peng board certified?
Yes. Dr. Peng is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Amy Li-Yen Peng bill to Medicare?
In 2024, Dr. Peng's most billed Medicare services were emergency department visit (99285).
Where did Dr. Amy Li-Yen Peng go to medical school?
Dr. Peng graduated from UC Irvine School of Medicine in 1997.
What drugs does Dr. Amy Li-Yen Peng prescribe most?
In 2020 Medicare Part D data, Dr. Peng's most prescribed drugs by claims were Cephalexin.
Has Dr. Amy Li-Yen Peng received payments from drug or device companies?
CMS Open Payments shows $120 in general payments to Dr. Peng from 1 company from 2016 to 2016. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Amy Li-Yen Peng been practicing?
Dr. Peng graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Amy Li-Yen Peng accept?
Dr. Peng is in network with 14 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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