Dr. Osmund T. Chan, MD
- Medicare services, 2024
- 2,352
- Medicare patients, 2024
- 432
- Part D claims, 2024
- 1,911
- Industry payments
- $132
- Affiliated sites
- 1
- Practice address
- 711 W. College St., Los Angeles, CA 90012-1163
- Practice phone
- Call (213) 626-8338
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Osmund T. Chan, MD
Physician office · Los Angeles, California
Find Dr. Chan'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. Osmund T. Chan is an otolaryngologist in Los Angeles, California
Dr. Chan practices at Osmund T. Chan, MD in Los Angeles, California.
Dr. Chan's NPI, 1346385663, was assigned on February 21, 2007. Dr. Chan graduated from Feinberg School of Medicine in 1976. Dr. Chan holds California license G43950.
- NPI
- 1346385663NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911156229
- NPI enumeration date
- February 21, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 626-8338
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Osmund T. Chan practices at Osmund T. Chan, MD in Los Angeles, California
Dr. Chan's primary practice is Osmund T. Chan, MD, at 711 W. College St., Los Angeles, CA 90012-1163. The practice phone is (213) 626-8338.
- Osmund T. Chan, MD711 W. College St., Los Angeles, CA 90012-1163Phone(213) 626-8338
Source: Dmand AI Affiliation Data
Dr. Osmund T. Chan is affiliated with 1 site of care
Dr. Chan's primary practice is Osmund T. Chan, MD in Los Angeles, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Osmund T. Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Osmund T. Chan, MD | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Osmund T. Chan is one of 1,107 otolaryngologists in California
Otolaryngology is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Chan is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dmand AI has Dr. Chan's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Otolaryngology, CaliforniaPrimary
- Illinois license
Clinical focus
Dmand AI lists chronic nasal allergies, hearing loss and impairment, swimmer's ear, tinnitus, upper respiratory infection (URI) and vertigo among the conditions Dr. Chan treats.
Otolaryngologists near Dr. Chan
Counts of otolaryngologists 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. Osmund T. Chan billed Medicare for 2,352 services in 2024
CMS data shows 2,352 Medicare services from Dr. Chan across 9 procedure codes in 2024, for 432 Medicare patients. Medicare paid $125,553 for them. Every service was in an office.
Dr. Chan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,2232024: 1,1268%
- Office and hospital visits
- 2023: 9632024: 8878%
- Surgery
- 2023: 3432024: 3391%
Dr. Chan compared with the California median for otolaryngologists, 2024
- Dr. Chan
- California median
- Medicare services
- 2,352vs 6663.5 times
- Medicare patients
- 432vs 29646% above
- Part D claims
- 1,851vs 11815.7 times
Medians across 1,045 otolaryngologists in California with Dmand AI profiles that report each measure.
Dr. Chan'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. Chan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chan and other otolaryngologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Osmund T. Chan treated 432 Medicare patients in 2024, average age 78
CMS counts 432 Medicare patients who saw Dr. Chan in 2024. The largest group is 65 to 74, with 147 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 83% are also on Medicaid. Their average risk score is 1.51, 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. Chan's median patient age at 67, with 54% women.
Dr. Chan's Medicare patients by age, 2024
Dr. Chan's Medicare patients by sex, 2024
- Women25559%
- Men17741%
Chronic conditions among Dr. Chan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease52%
- Arthritis50%
- Diabetes47%
- Osteoporosis40%
- Ischemic heart disease35%
- COPD33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Osmund T. Chan wrote 1,911 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 1,911 Medicare Part D claims for 559 patients. 97% of them were for generic drugs. CMS names the drug for 1,851 of them, across 11 drugs with 11 or more claims each, at $61,572 in total drug cost. In 2023, CMS named 2,089 claims across 14 drugs.
Dr. Chan's Part D claims by kind of drug, 2024
- Generic1,853 claims97%
- Brand-name and other58 claims3%
Dr. Chan'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. Chan's Part D claims, 2024
- Antibiotics10%192 of 1,911 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: 2,0892024: 1,85111%
Drugs named by CMS: 11 in 2024, 14 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
How Dr. Osmund T. Chan takes part in Medicare
Dr. Chan 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. Osmund T. Chan received $132 in industry payments from 2016 to 2024
CMS Open Payments shows 8 general payments to Dr. Chan from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $93.
General payments to Dr. Chan by program year, 2016 to 2024
Companies that paid Dr. Chan the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Osmund T. Chan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chan.
Awards and honors for Dr. Chan
- Undated
- AAO-HNS Fellow
Source: Dmand AI Professional Profile Data
Dr. Osmund T. Chan graduated from Feinberg School of Medicine
Dr. Chan graduated from Feinberg School of Medicine in 1976. Dr. Chan is a member of NHS.
- Medical school
- Board certified in otolaryngology
Source: Dmand AI Professional Profile Data
Dr. Osmund T. Chan accepts plans from 13 insurance carriers
Dr. Chan is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Chan accepts, by number of carriers
- Medicare8
- HMO7
- PPO7
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Osmund T. Chan'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) |
| 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. Osmund T. Chan
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. Osmund T. Chan's NPI number?
Dr. Osmund T. Chan's NPI number is 1346385663. It was assigned on February 21, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Osmund T. Chan?
Dr. Osmund T. Chan is an otolaryngologist in Los Angeles, California. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Osmund T. Chan practice?
Dr. Chan practices at 711 W. College St., Los Angeles, CA 90012-1163. Dr. Chan's primary practice is Osmund T. Chan, MD in Los Angeles, California.
What is Dr. Osmund T. Chan's office phone number?
The practice phone on file for Dr. Chan is (213) 626-8338.
What is Dr. Osmund T. Chan's medical license number?
Dr. Chan holds California license G43950, one of the licenses on file in 2 states.
Which states has Dr. Osmund T. Chan been licensed in?
Dmand AI has state licenses on file for Dr. Chan in California (1980 to 2026) and Illinois (1977 to 2005).
Does Dr. Osmund T. Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 2,352 services in 2024, and Dr. Chan accepts Medicare assignment.
How many Medicare patients does Dr. Osmund T. Chan see?
CMS counts 432 Medicare patients who saw Dr. Chan in 2024, with an average age of 78.
Is Dr. Osmund T. Chan board certified?
Yes. Dr. Chan is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery.
What services does Dr. Osmund T. Chan bill to Medicare?
In 2024, Dr. Chan's most billed Medicare services were ear, nose and throat service (92504), office visit, established patient (99213) and office visit, established patient (99214).
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Where did Dr. Osmund T. Chan go to medical school?
Dr. Chan graduated from Feinberg School of Medicine in 1976.
What drugs does Dr. Osmund T. Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Ofloxacin, Neomycin-Polymyxin-Hydrocort and Azithromycin.
Has Dr. Osmund T. Chan received payments from drug or device companies?
CMS Open Payments shows $132 in general payments to Dr. Chan from 4 companies from 2016 to 2024. The largest total came from Boston Scientific Corporation.
How long has Dr. Osmund T. Chan been practicing?
Dr. Chan graduated from medical school in 1976, 50 years ago.
What insurance does Dr. Osmund T. Chan accept?
Dr. Chan is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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