Dr. Homer Kam Yun Lew, DO
- Medicare services, 2024
- 1,467
- Medicare patients, 2024
- 204
- Part D claims, 2024
- 9,178
- Hospital affiliations
- 3
- Industry payments
- $4,461
- Practice address
- 23521 Paseo De Valencia, Suite 204, Laguna Hills, CA 92653
- Practice phone
- Call (949) 458-2026
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Saddleback Pain and Surgical Center
Surgery Center - Medicare-Certified · Laguna Hills, California
Find Dr. Lew'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. Homer Kam Yun Lew is an internist in Laguna Hills, California
Dr. Lew practices at Saddleback Pain and Surgical Center in Laguna Hills, California.
Dr. Lew's NPI, 1154452142, was assigned on March 8, 2007. Dr. Lew graduated from WesternU College of Osteopathic Medicine of the Pacific in 1996. Dr. Lew holds California license 20A7156.
- NPI
- 1154452142NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981665627
- NPI enumeration date
- March 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 458-2026
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Homer Kam Yun Lew practices at Saddleback Pain and Surgical Center in Laguna Hills, California
Dr. Lew's primary practice is Saddleback Pain and Surgical Center, at 23521 Paseo De Valencia, Suite 204, Laguna Hills, CA 92653. The practice phone is (949) 458-2026.
- Saddleback Pain and Surgical Center23521 Paseo De Valencia, Suite 204, Laguna Hills, CA 92653Phone(949) 458-2026
Source: Dmand AI Affiliation Data
Dr. Homer Kam Yun Lew is affiliated with 15 sites of care and 2 medical groups
Dr. Lew's primary practice is Saddleback Pain and Surgical Center in Laguna Hills, California. Dr. Lew is also affiliated with MemorialCare Saddleback Medical Center. Dmand AI also links Dr. Lew to 2 more hospitals, 4 skilled nursing facilities, 3 home health agencies, 2 group practices and clinics, 2 medical groups, 1 physician office and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Homer Kam Yun Lew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lew practices, 15 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saddleback Pain and Surgical Center | Available with a free account |
| +14 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Homer Kam Yun Lew is one of 16,751 internists in California
Internal medicine is Dr. Lew's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lew is board certified in internal medicine by the American Board of Internal Medicine. Dr. Lew is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute skin infection, arthritis, asthma, atrial fibrillation and flutter, cerebrovascular disease, chronic anemia and chronic diabetes among the conditions Dr. Lew treats.
Internists near Dr. Lew
Counts of internists 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. Homer Kam Yun Lew billed Medicare for 1,467 services in 2024
CMS data shows 1,467 Medicare services from Dr. Lew across 13 procedure codes in 2024, for 204 Medicare patients. Medicare paid $101,823 for them.
Dr. Lew's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0272024: 1,15713%
- Other services
- 2023: 372024: 310738%
Where Dr. Lew's Medicare services took place, 2024
- In an office92263%
- In a facility54537%
Dr. Lew compared with the California median for internists, 2024
- Dr. Lew
- California median
- Medicare services
- 1,467vs 3614.1 times
- Medicare patients
- 204vs 15135% above
- Part D claims
- 8,342vs 42119.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Lew'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. Lew and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Homer Kam Yun Lew treated 204 Medicare patients in 2024, average age 81
CMS counts 204 Medicare patients who saw Dr. Lew in 2024. The largest group is 85 and over, with 83 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.78, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lew's median patient age at 80, with 58% women.
Dr. Lew's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lew's Medicare patients by sex, 2024
- Women12662%
- Men7838%
Chronic conditions among Dr. Lew's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Mood disorders41%
- Depression38%
- Diabetes38%
- Anxiety32%
- Chronic kidney disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
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. Homer Kam Yun Lew wrote 9,178 Medicare Part D claims in 2024
In 2024, Dr. Lew wrote 9,178 Medicare Part D claims for 471 patients. 88% of them were for generic drugs. CMS names the drug for 8,342 of them, across 153 drugs with 11 or more claims each, at $449,376 in total drug cost. In 2023, CMS named 7,568 claims across 138 drugs.
Dr. Lew's Part D claims by kind of drug, 2024
- Generic8,049 claims88%
- Brand-name1,107 claims12%
- Other22 claims0%
Dr. Lew'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. Lew's Part D claims, 2024
- Opioids3%266 of 9,178 claims
- Antibiotics3%248 of 9,178 claims
- Antipsychotics, patients 65 and over1%94 of 9,178 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: 7,5682024: 8,34210%
Drugs named by CMS: 153 in 2024, 138 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. Homer Kam Yun Lew offers telehealth to Medicare patients
Dr. Lew accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lew as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Homer Kam Yun Lew received $4,461 in industry payments from 2016 to 2025
CMS Open Payments shows 259 general payments to Dr. Lew from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Janssen Pharmaceuticals, Inc paid the most, $461. It also lists 1 research payment totaling $975 in 2018.
General payments to Dr. Lew by program year, 2016 to 2025
General payments to Dr. Lew by kind, 2016 to 2025
- Food and beverage$4,38598%
- Speaker and faculty fees$651%
- Education$110%
Companies that paid Dr. Lew 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. Homer Kam Yun Lew has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Lew, most recently Top Docs - Internal Medicine (Orange Coast Magazine) in 2014.
Awards and honors for Dr. Lew
- 2014
- Top Docs - Internal Medicine (Orange Coast Magazine)
- 2013
- Top Docs- Internal Medicine (Orange Coast Magazine)
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Homer Kam Yun Lew graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Lew graduated from WesternU College of Osteopathic Medicine of the Pacific in 1996. Dr. Lew is a member of ACOI and ACP.
- Medical school
- Board certified in internal medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Homer Kam Yun Lew accepts plans from 11 insurance carriers
Dr. Lew is in network with 11 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Lew accepts, by number of carriers
- Medicare7
- PPO7
- HMO4
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Homer Kam Yun Lew'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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Homer Kam Yun Lew
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. Homer Kam Yun Lew's NPI number?
Dr. Homer Kam Yun Lew's NPI number is 1154452142. It was assigned on March 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Homer Kam Yun Lew?
Dr. Homer Kam Yun Lew is an internist in Laguna Hills, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Homer Kam Yun Lew practice?
Dr. Lew practices at 23521 Paseo De Valencia, Suite 204, Laguna Hills, CA 92653. Dr. Lew's primary practice is Saddleback Pain and Surgical Center in Laguna Hills, California. Dmand AI also links Dr. Lew to 2 hospitals, 4 skilled nursing facilities, 3 home health agencies, 2 group practices and clinics, 2 medical groups, 1 physician office and 1 hospice.
What is Dr. Homer Kam Yun Lew's office phone number?
The practice phone on file for Dr. Lew is (949) 458-2026.
What is Dr. Homer Kam Yun Lew's medical license number?
Dr. Lew holds California license 20A7156.
Which hospitals is Dr. Homer Kam Yun Lew affiliated with?
Dr. Lew is affiliated with MemorialCare Saddleback Medical Center. Dmand AI links Dr. Lew to 2 more hospitals.
Does Dr. Homer Kam Yun Lew accept Medicare?
Yes. CMS data shows Dr. Lew billed Medicare for 1,467 services in 2024, and Dr. Lew accepts Medicare assignment.
Does Dr. Homer Kam Yun Lew offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lew as offering telehealth services.
How many Medicare patients does Dr. Homer Kam Yun Lew see?
CMS counts 204 Medicare patients who saw Dr. Lew in 2024, with an average age of 81.
Is Dr. Homer Kam Yun Lew board certified?
Yes. Dr. Lew is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Homer Kam Yun Lew bill to Medicare?
In 2024, Dr. Lew's most billed Medicare services were nursing facility care (99309), medicare service (G2211) and office visit, established patient (99214).
Where did Dr. Homer Kam Yun Lew go to medical school?
Dr. Lew graduated from WesternU College of Osteopathic Medicine of the Pacific in 1996.
What drugs does Dr. Homer Kam Yun Lew prescribe most?
In 2024 Medicare Part D data, Dr. Lew's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Homer Kam Yun Lew received payments from drug or device companies?
CMS Open Payments shows $4,461 in general payments to Dr. Lew from 43 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Homer Kam Yun Lew been practicing?
Dr. Lew graduated from medical school in 1996, 30 years ago.
What insurance does Dr. Homer Kam Yun Lew accept?
Dr. Lew is in network with 11 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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