AdenocarcinomaCaliforniaEsophageal Neoplasms
Dr. Chaewoo Ahn, MD
NPI1861569741
- Part D claims, 2026
- 25
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $609
- Medical group
- 1
- Practice address
- 13652 Cantara St, Panorama City, CA 91402
- Practice phone
- Call (818) 375-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ahn's professional email, personal email and mobile number
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Dr. Chaewoo Ahn is a general surgeon in Lancaster, California
Dr. Ahn practices at Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente.
Dr. Ahn's NPI, 1861569741, was assigned on November 29, 2006. Dr. Ahn graduated from VCU School of Medicine in 1988. Dr. Ahn holds California license G67557.
NPI and contact details
- NPI
- 1861569741NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Practice phone
- (818) 375-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chaewoo Ahn practices in Panorama City and Lancaster
Dr. Ahn's primary practice is Panorama City Medical Center, at 13652 Cantara St, Panorama City, CA 91402 in Los Angeles County. The practice phone is (818) 375-2000. The NPI Registry lists Dr. Ahn's practice address as 1600 W Ave J, Lancaster, CA 93534.
- Panorama City Medical CenterPrimary13652 Cantara St, Panorama City, CA 91402 · Los Angeles CountyPhone(818) 375-2000
- NPI Registry address1600 W Ave J, Lancaster, CA 93534 · Los Angeles CountyPhone(818) 375-2000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Chaewoo Ahn is affiliated with 1 site of care and 1 medical group
Dr. Ahn's primary practice is Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chaewoo Ahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Panorama City Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chaewoo Ahn is one of 2,926 general surgeons in California
Surgery is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Ahn is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Ahn's licenses on file in 3 states: California, District of Columbia and Maryland.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- District of Columbia license
- Maryland license
General surgeons near Dr. Ahn
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
2,926general surgeons in California12general surgeons in Lancaster14general surgeons at Panorama City Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chaewoo Ahn's patients have a median age of 89
Across all payers, Dmand AI patient panel data puts Dr. Ahn's median patient age at 89, with 100% women.
Dr. Ahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 89
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Chaewoo Ahn wrote 25 Medicare Part D claims in 2026
In 2026, Dr. Ahn wrote 25 Medicare Part D claims for 19 patients. 88% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $138 in total drug cost. In 2023, CMS named 38 claims across 1 drug.
Part D claims, 202625
Drugs named by CMS1
Total drug cost$138
Part D patients19
Dr. Ahn's Part D claims by kind of drug, 2026
- Generic22 claims88%
- Brand-name and other3 claims12%
Dr. Ahn'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. Ahn's Part D claims, 2026
- Opioids60%15 of 25 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: 382024: 1561%
Drugs named by CMS: 1 in 2024, 1 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), 2026 data
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Dr. Chaewoo Ahn has 2 publications on record
Dmand AI links 2 papers to Dr. Ahn.
Papers2
Recent publications by Dr. Ahn
Ann Thorac Surg
LipomaMediastinal Neoplasms
See who Dr. Ahn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ahn works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chaewoo Ahn received $609 in industry payments from 2016 to 2021
CMS Open Payments shows 5 general payments to Dr. Ahn from 4 drug and device companies from 2016 to 2021. Travel and lodging make up the largest share, 69% of the total. Stryker Corporation paid the most, $422.
General payments to Dr. Ahn by program year, 2016 to 2021
General payments to Dr. Ahn by kind, 2016 to 2021
$609in total
- Travel and lodging$42269%
- Food and beverage$18731%
Companies that paid Dr. Ahn the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chaewoo Ahn has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Ahn, most recently ACS Fellow in 2011.
Awards and honors for Dr. Ahn
- 2011
- ACS Fellow
- Undated
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Chaewoo Ahn graduated from VCU School of Medicine
Dr. Ahn graduated from VCU School of Medicine in 1988. Dr. Ahn is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. Chaewoo Ahn'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 |
| 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. Chaewoo Ahn
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. Chaewoo Ahn's NPI number?
Dr. Chaewoo Ahn's NPI number is 1861569741. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chaewoo Ahn?
Dr. Chaewoo Ahn is a general surgeon in Lancaster, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Chaewoo Ahn practice?
Dr. Ahn practices at 13652 Cantara St, Panorama City, CA 91402. Dr. Ahn also practices at 1600 W Ave J, Lancaster, CA 93534. Dr. Ahn's primary practice is Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente.
What is Dr. Chaewoo Ahn's office phone number?
The practice phone on file for Dr. Ahn is (818) 375-2000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Chaewoo Ahn's email address?
Dmand AI checks professional and personal email addresses for Dr. Ahn through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Chaewoo Ahn's medical license number?
Dr. Ahn holds California license G67557, one of the licenses on file in 3 states.
Which states has Dr. Chaewoo Ahn been licensed in?
Dmand AI has state licenses on file for Dr. Ahn in California (1989 to 2027), District of Columbia (1994 to 1997) and Maryland (1994 to 1996).
Which hospitals is Dr. Chaewoo Ahn affiliated with?
Dr. Ahn practices at Panorama City Medical Center in Panorama City, California.
What medical group is Dr. Chaewoo Ahn part of?
Dr. Ahn is linked to Southern California Permanente Medical Group.
Who does Dr. Chaewoo Ahn practice with?
Dmand AI links 17,030 HCPs to Dr. Ahn's primary medical group, 280 of them general surgeons. A free account lists them, with verified contacts.
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Is Dr. Chaewoo Ahn board certified?
Yes. Dr. Ahn is board certified in surgery by the American Board of Surgery.
Where did Dr. Chaewoo Ahn go to medical school?
Dr. Ahn graduated from VCU School of Medicine in 1988.
What drugs does Dr. Chaewoo Ahn prescribe most?
In 2024 Medicare Part D data, Dr. Ahn's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Chaewoo Ahn received payments from drug or device companies?
CMS Open Payments shows $609 in general payments to Dr. Ahn from 4 companies from 2016 to 2021. The largest total came from Stryker Corporation.
How long has Dr. Chaewoo Ahn been practicing?
Dr. Ahn graduated from medical school in 1988, 38 years ago.
Does Dr. Chaewoo Ahn do research?
Dmand AI links 2 publications to Dr. Ahn.
What EHR does Dr. Chaewoo Ahn's practice use?
Dmand AI tracks the EHR system at Panorama City Medical Center. The vendor and product are available with a free Dmand AI account.
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