Dr. Haywon Lieh, MD
- Medicare services, 2024
- 341
- Medicare patients, 2024
- 400
- Part D claims, 2022
- 107
- Hospital affiliations
- 1
- Industry payments
- $373
- Practice address
- 2750 Sycamore Dr, Simi Valley, CA 93065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aspen Surgery Center - HOPD
Acute Care Hospital outpatient department · Simi Valley, California
Find Dr. Lieh'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. Haywon Lieh is an anesthesiologist in Walnut Creek, California
Dr. Lieh practices at Aspen Surgery Center - HOPD in Simi Valley, California.
Dr. Lieh's NPI, 1013952308, was assigned on June 19, 2006. Dr. Lieh graduated from UCSF School of Medicine in 1986. Dr. Lieh's California license number on file is A47721.
- NPI
- 1013952308NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486708898
- NPI enumeration date
- June 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Haywon Lieh practices in Simi Valley and Walnut Creek
Dr. Lieh's primary practice is Aspen Surgery Center - HOPD, at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Lieh also practices at Aspen Surgery Center, 133 La Casa Via, Walnut Creek, CA 94598.
- Aspen Surgery Center - HOPDPrimary2750 Sycamore Dr, Simi Valley, CA 93065
- Aspen Surgery Center133 La Casa Via, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 210-8400
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Haywon Lieh is affiliated with 2 sites of care and 1 medical group
Dr. Lieh's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California. Dr. Lieh is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is G2 Anesthesia.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Haywon Lieh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lieh practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aspen Surgery Center - HOPD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Haywon Lieh is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Lieh's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Lieh is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Lieh's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Texas license
Anesthesiologists near Dr. Lieh
Counts of anesthesiologists 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. Haywon Lieh billed Medicare for 341 services in 2024
CMS data shows 341 Medicare services from Dr. Lieh across 8 procedure codes in 2024, for 400 Medicare patients. Medicare paid $39,577 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lieh's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 2702024: 34126%
Dr. Lieh compared with the California median for anesthesiologists, 2024
- Dr. Lieh
- California median
- Medicare services
- 341vs 724.7 times
- Medicare patients
- 400vs 1432.8 times
- Part D claims
- 107vs 234.7 times
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Lieh'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. Lieh?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lieh and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Haywon Lieh treated 400 Medicare patients in 2024, average age 74
CMS counts 400 Medicare patients who saw Dr. Lieh in 2024. The largest group is 65 to 74, with 185 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 15% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lieh's median patient age at 66, with 58% women.
Dr. Lieh's Medicare patients by age, 2024
Dr. Lieh's Medicare patients by sex, 2024
- Women22155%
- Men17945%
Chronic conditions among Dr. Lieh's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis39%
- Diabetes27%
- Chronic kidney disease20%
- Ischemic heart disease20%
- Osteoporosis20%
- Cancer19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lieh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Haywon Lieh wrote 107 Medicare Part D claims in 2022
In 2022, Dr. Lieh wrote 107 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $716 in total drug cost. In 2021, CMS named 74 claims across 1 drug.
Dr. Lieh's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 742022: 10745%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Haywon Lieh takes part in Medicare
Dr. Lieh 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. Haywon Lieh received $373 in industry payments from 2016 to 2022
CMS Open Payments shows 7 general payments to Dr. Lieh from 6 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $138.
General payments to Dr. Lieh by program year, 2016 to 2022
Companies that paid Dr. Lieh the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Haywon Lieh graduated from UCSF School of Medicine
Dr. Lieh graduated from UCSF School of Medicine in 1986.
- Medical school
- Board certified in anesthesiology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Haywon Lieh accepts plans from 1 insurance carrier
Dr. Lieh is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Haywon Lieh'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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) |
| 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. Haywon Lieh
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. Haywon Lieh's NPI number?
Dr. Haywon Lieh's NPI number is 1013952308. It was assigned on June 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Haywon Lieh?
Dr. Haywon Lieh is an anesthesiologist in Walnut Creek, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Haywon Lieh practice?
Dr. Lieh practices at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Lieh also practices at 133 La Casa Via, Walnut Creek, CA 94598. Dr. Lieh's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California.
What is Dr. Haywon Lieh's medical license number?
Dr. Lieh's California license number on file is A47721, one of the licenses on file in 2 states.
Which states has Dr. Haywon Lieh been licensed in?
Dmand AI has state licenses on file for Dr. Lieh in California (1989 to 2025) and Texas (1987 to 1990).
Which hospitals is Dr. Haywon Lieh affiliated with?
Dr. Lieh is affiliated with John Muir Medical Center, Walnut Creek.
What medical group is Dr. Haywon Lieh part of?
Dr. Lieh is linked to G2 Anesthesia.
Does Dr. Haywon Lieh accept Medicare?
Yes. CMS data shows Dr. Lieh billed Medicare for 341 services in 2024, and Dr. Lieh accepts Medicare assignment.
How many Medicare patients does Dr. Haywon Lieh see?
CMS counts 400 Medicare patients who saw Dr. Lieh in 2024, with an average age of 74.
Is Dr. Haywon Lieh board certified?
Yes. Dr. Lieh is board certified in anesthesiology by the American Board of Anesthesiology.
Show 6 more questionsShow fewer questions
What services does Dr. Haywon Lieh bill to Medicare?
In 2024, Dr. Lieh's most billed Medicare services were anesthesia (00142), anesthesia (00811) and anesthesia (00103).
Where did Dr. Haywon Lieh go to medical school?
Dr. Lieh graduated from UCSF School of Medicine in 1986.
What drugs does Dr. Haywon Lieh prescribe most?
In 2022 Medicare Part D data, Dr. Lieh's most prescribed drugs by claims were Pantoprazole Sodium.
Has Dr. Haywon Lieh received payments from drug or device companies?
CMS Open Payments shows $373 in general payments to Dr. Lieh from 6 companies from 2016 to 2022. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Haywon Lieh been practicing?
Dr. Lieh graduated from medical school in 1986, 40 years ago.
What insurance does Dr. Haywon Lieh accept?
Dr. Lieh is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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