Dr. Kyu D. Ahn, MD
- Medicare services, 2024
- 948
- Medicare patients, 2024
- 153
- Part D claims, 2024
- 12,076
- Hospital affiliations
- 2
- Industry payments
- $3,967
- Practice address
- 1798 N Garey Ave, Pomona, CA 91767
- Practice phone
- Call (909) 865-9500
- 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
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. Kyu D. Ahn is an internist in Pomona, California
Dr. Ahn practices at Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center.
Dr. Ahn's NPI, 1427015593, was assigned on May 1, 2006. Dr. Ahn graduated from Chung-Ang University College of Medicine in 1977. Dr. Ahn's California license number on file is A35299.
- NPI
- 1427015593NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345264719
- NPI enumeration date
- May 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 865-9500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kyu D. Ahn practices at Pomona Valley Hospital Medical Center in Pomona, California
Dr. Ahn's primary practice is Pomona Valley Hospital Medical Center, at 1798 N Garey Ave, Pomona, CA 91767 in Los Angeles County. The practice phone is (909) 865-9500.
- Pomona Valley Hospital Medical Center1798 N Garey Ave, Pomona, CA 91767 · Los Angeles CountyPhone(909) 865-9500
Source: Dmand AI Affiliation Data
Dr. Kyu D. Ahn is affiliated with 3 sites of care
Dr. Ahn's primary practice is Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center. Dr. Ahn is also affiliated with Casa Colina Hospital and Centers for Healthcare. Dmand AI also links Dr. Ahn to 1 more home health agency, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kyu D. Ahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pomona Valley Hospital Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Pomona Valley Hospital Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kyu D. Ahn is one of 16,751 internists in California
Internal medicine is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ahn is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ahn's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists acute gastroduodenitis, acute mini-stroke (TIA), acute skin infection, ADHD, adjustment disease, alzheimer's disease, aneurysm and anxiety among the conditions Dr. Ahn treats.
Internists near Dr. Ahn
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. Kyu D. Ahn billed Medicare for 948 services in 2024
CMS data shows 948 Medicare services from Dr. Ahn across 6 procedure codes in 2024, for 153 Medicare patients. Medicare paid $56,846 for them. Every service was in an office.
Dr. Ahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7782024: 57226%
- Other services
- 2023: 1592024: 23548%
- Surgery
- 2023: 1962024: 14128%
- Tests and treatments
- 2023: 852024: 0100%
Dr. Ahn compared with the California median for internists, 2024
- Dr. Ahn
- California median
- Medicare services
- 948vs 3612.6 times
- Medicare patients
- 153vs 151Close to median
- Part D claims
- 11,305vs 42126.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Ahn'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. Ahn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ahn and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kyu D. Ahn treated 153 Medicare patients in 2024, average age 76
CMS counts 153 Medicare patients who saw Dr. Ahn in 2024. The largest group is 65 to 74, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 68% are also on Medicaid. Their average risk score is 1.64, 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. Ahn's median patient age at 65, with 55% women.
Dr. Ahn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ahn's Medicare patients by sex, 2024
- Women9864%
- Men5536%
Chronic conditions among Dr. Ahn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes52%
- Arthritis43%
- Chronic kidney disease35%
- Mood disorders31%
- Osteoporosis30%
- Depression29%
Share of Medicare patients with each condition. A patient can have several.
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 65
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kyu D. Ahn wrote 12,076 Medicare Part D claims in 2024
In 2024, Dr. Ahn wrote 12,076 Medicare Part D claims for 569 patients. 86% of them were for generic drugs. CMS names the drug for 11,305 of them, across 130 drugs with 11 or more claims each, at $981,569 in total drug cost. In 2023, CMS named 11,781 claims across 141 drugs.
Dr. Ahn's Part D claims by kind of drug, 2024
- Generic10,355 claims86%
- Brand-name1,607 claims13%
- Other114 claims1%
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, 2024
- Opioids0%51 of 12,076 claims
- Antibiotics2%225 of 12,076 claims
- Antipsychotics, patients 65 and over0%16 of 12,076 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: 11,7812024: 11,3054%
Drugs named by CMS: 130 in 2024, 141 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. Kyu D. Ahn takes part in Medicare
Dr. Ahn 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. Kyu D. Ahn received $3,967 in industry payments from 2016 to 2025
CMS Open Payments shows 185 general payments to Dr. Ahn from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Amarin Pharma Inc. paid the most, $1,172.
General payments to Dr. Ahn by program year, 2016 to 2025
General payments to Dr. Ahn by kind, 2016 to 2025
- Food and beverage$3,87398%
- Education$952%
Companies that paid Dr. Ahn 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. Kyu D. Ahn graduated from Chung-Ang University College of Medicine
Dr. Ahn graduated from Chung-Ang University College of Medicine in 1977.
- Medical school
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Kyu D. Ahn accepts plans from 11 insurance carriers
Dr. Ahn is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- LA Care
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- +3 more carriersWith a free account
Plan types Dr. Ahn accepts, by number of carriers
- Medicare9
- HMO6
- PPO6
- POS4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kyu D. 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 | 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) |
| 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. Kyu D. 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. Kyu D. Ahn's NPI number?
Dr. Kyu D. Ahn's NPI number is 1427015593. It was assigned on May 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kyu D. Ahn?
Dr. Kyu D. Ahn is an internist in Pomona, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kyu D. Ahn practice?
Dr. Ahn practices at 1798 N Garey Ave, Pomona, CA 91767. Dr. Ahn's primary practice is Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center. Dmand AI also links Dr. Ahn to 1 home health agency.
What is Dr. Kyu D. Ahn's office phone number?
The practice phone on file for Dr. Ahn is (909) 865-9500.
What is Dr. Kyu D. Ahn's medical license number?
Dr. Ahn's California license number on file is A35299, one of the licenses on file in 2 states.
Which states has Dr. Kyu D. Ahn been licensed in?
Dmand AI has state licenses on file for Dr. Ahn in California (1980 to 2025) and New York (since 1979).
Which hospitals is Dr. Kyu D. Ahn affiliated with?
Dr. Ahn practices at Pomona Valley Hospital Medical Center in Pomona, California. Dr. Ahn is also affiliated with Casa Colina Hospital and Centers for Healthcare.
Does Dr. Kyu D. Ahn accept Medicare?
Yes. CMS data shows Dr. Ahn billed Medicare for 948 services in 2024, and Dr. Ahn accepts Medicare assignment.
How many Medicare patients does Dr. Kyu D. Ahn see?
CMS counts 153 Medicare patients who saw Dr. Ahn in 2024, with an average age of 76.
Is Dr. Kyu D. Ahn board certified?
Yes. Dr. Ahn is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Kyu D. Ahn bill to Medicare?
In 2024, Dr. Ahn's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36410) and medicare service (G0444).
Where did Dr. Kyu D. Ahn go to medical school?
Dr. Ahn graduated from Chung-Ang University College of Medicine in 1977.
What drugs does Dr. Kyu D. Ahn prescribe most?
In 2024 Medicare Part D data, Dr. Ahn's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Vascepa.
Has Dr. Kyu D. Ahn received payments from drug or device companies?
CMS Open Payments shows $3,967 in general payments to Dr. Ahn from 21 companies from 2016 to 2025. The largest total came from Amarin Pharma Inc.
How long has Dr. Kyu D. Ahn been practicing?
Dr. Ahn graduated from medical school in 1977, 49 years ago.
What insurance does Dr. Kyu D. Ahn accept?
Dr. Ahn is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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