Dr. Phillip C. Ahn, MD
- Medicare services, 2024
- 16,530
- Medicare patients, 2024
- 600
- Part D claims, 2024
- 5,499
- MIPS score, 2024
- 100
- Industry payments
- $23,929
- Practice address
- 520 S Virgil Ave Ste 205, Los Angeles, CA 90020
- Practice phone
- Call (213) 251-3333
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Phillip C. Ahn, MD
Physician office · Los Angeles, California
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. Phillip C. Ahn is a neurologist in Los Angeles, California
Dr. Ahn practices at Phillip C. Ahn, MD in Los Angeles, California.
Dr. Ahn's NPI, 1104921832, was assigned on September 14, 2006. Dr. Ahn graduated from Korea University College of Medicine in 1989. Dr. Ahn holds California license A52241.
- NPI
- 1104921832NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557406907
- NPI enumeration date
- September 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (213) 251-3333
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Phillip C. Ahn practices at Phillip C. Ahn, MD in Los Angeles, California
Dr. Ahn's primary practice is Phillip C. Ahn, MD, at 520 S Virgil Ave Ste 205, Los Angeles, CA 90020. The practice phone is (213) 251-3333.
- Phillip C. Ahn, MD520 S Virgil Ave Ste 205, Los Angeles, CA 90020Phone(213) 251-3333
Source: Dmand AI Affiliation Data
Dr. Phillip C. Ahn is affiliated with 1 site of care
Dr. Ahn's primary practice is Phillip C. Ahn, MD in Los Angeles, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Phillip C. 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 |
|---|---|
| Phillip C. Ahn, MD | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Phillip C. Ahn is one of 2,207 neurologists in California
Neurology is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Ahn is licensed in California.
Specialties and state licenses
- Neurology, CaliforniaPrimary
Clinical focus
Dmand AI lists alzheimer's disease, carpal tunnel syndrome, cerebrovascular disease, epilepsy, essential tremor, fibromyalgia and chronic pain, lower back pain and migraine and chronic headache among the conditions Dr. Ahn treats.
Neurologists near Dr. Ahn
Counts of neurologists 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. Phillip C. Ahn billed Medicare for 16,530 services in 2024
CMS data shows 16,530 Medicare services from Dr. Ahn across 22 procedure codes in 2024, for 600 Medicare patients. Medicare paid $352,547 for them. Every service was in an office.
Dr. Ahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 12,9832024: 13,9477%
- Office and hospital visits
- 2023: 2,0232024: 1,8439%
- Tests and treatments
- 2023: 6792024: 6396%
- Surgery
- 2023: 1562024: 10135%
- Other services
- 2023: 152024: 0100%
Dr. Ahn compared with the California median for neurologists, 2024
- Dr. Ahn
- California median
- Medicare services
- 16,530vs 40440.9 times
- Medicare patients
- 600vs 1903.2 times
- Part D claims
- 5,208vs 32416.1 times
Medians across 1,995 neurologists 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ahn and other neurologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Phillip C. Ahn treated 600 Medicare patients in 2024, average age 78
CMS counts 600 Medicare patients who saw Dr. Ahn in 2024. The largest group is 75 to 84, with 258 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 75% are also on Medicaid. Their average risk score is 1.69, 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 74, with 58% women.
Dr. Ahn's Medicare patients by age, 2024
Dr. Ahn's Medicare patients by sex, 2024
- Women37763%
- Men22337%
Chronic conditions among Dr. Ahn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis66%
- Diabetes63%
- Alzheimer's and dementia36%
- Chronic kidney disease35%
- Mood disorders35%
- Depression34%
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 74
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. Phillip C. Ahn wrote 5,499 Medicare Part D claims in 2024
In 2024, Dr. Ahn wrote 5,499 Medicare Part D claims for 902 patients. 97% of them were for generic drugs. CMS names the drug for 5,208 of them, across 51 drugs with 11 or more claims each, at $183,840 in total drug cost. In 2023, CMS named 4,781 claims across 57 drugs.
Dr. Ahn's Part D claims by kind of drug, 2024
- Generic5,333 claims97%
- Brand-name154 claims3%
- Other12 claims0%
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
- Opioids2%98 of 5,499 claims
- Antipsychotics, patients 65 and over1%72 of 5,499 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: 4,7812024: 5,2089%
Drugs named by CMS: 51 in 2024, 57 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. Phillip C. Ahn scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Ahn for performance year 2024, reported individually. Dr. Ahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ahn as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Ahn's MIPS scores, performance year 2024
- 100of 100Final score
- 96.3of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Phillip C. Ahn received $23,929 in industry payments from 2016 to 2025
CMS Open Payments shows 682 general payments to Dr. Ahn from 55 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 65% of the total. SK Life Science, Inc. paid the most, $5,855.
General payments to Dr. Ahn by program year, 2016 to 2025
General payments to Dr. Ahn by kind, 2016 to 2025
- Food and beverage$15,44765%
- Consulting fees$4,73320%
- Honoraria$1,7607%
- Travel and lodging$1,1365%
- Other$8544%
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. Phillip C. Ahn has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ahn, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Ahn
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Phillip C. Ahn graduated from Korea University College of Medicine
Dr. Ahn graduated from Korea University College of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Phillip C. Ahn accepts plans from 17 insurance carriers
Dr. Ahn is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Molina
- +9 more carriersWith a free account
Plan types Dr. Ahn accepts, by number of carriers
- PPO10
- Medicare9
- HMO8
- POS6
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Phillip C. 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 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)Clinician Public Reporting: Overall MIPS Performance (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. Phillip C. 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. Phillip C. Ahn's NPI number?
Dr. Phillip C. Ahn's NPI number is 1104921832. It was assigned on September 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Phillip C. Ahn?
Dr. Phillip C. Ahn is a neurologist in Los Angeles, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Phillip C. Ahn practice?
Dr. Ahn practices at 520 S Virgil Ave Ste 205, Los Angeles, CA 90020. Dr. Ahn's primary practice is Phillip C. Ahn, MD in Los Angeles, California.
What is Dr. Phillip C. Ahn's office phone number?
The practice phone on file for Dr. Ahn is (213) 251-3333.
What is Dr. Phillip C. Ahn's medical license number?
Dr. Ahn holds California license A52241.
Does Dr. Phillip C. Ahn accept Medicare?
Yes. CMS data shows Dr. Ahn billed Medicare for 16,530 services in 2024, and Dr. Ahn accepts Medicare assignment.
Does Dr. Phillip C. Ahn offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ahn as offering telehealth services.
What is Dr. Phillip C. Ahn's MIPS score?
Dr. Ahn's MIPS final score for performance year 2024 is 100 out of 100, reported individually.
How many Medicare patients does Dr. Phillip C. Ahn see?
CMS counts 600 Medicare patients who saw Dr. Ahn in 2024, with an average age of 78.
What services does Dr. Phillip C. Ahn bill to Medicare?
In 2024, Dr. Ahn's most billed Medicare services were injected or infused drug (J0588), injected or infused drug (J0585) and office visit, established patient (99213).
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Where did Dr. Phillip C. Ahn go to medical school?
Dr. Ahn graduated from Korea University College of Medicine in 1989.
What drugs does Dr. Phillip C. Ahn prescribe most?
In 2024 Medicare Part D data, Dr. Ahn's most prescribed drugs by claims were Donepezil HCl, Gabapentin and Carbidopa-Levodopa.
Has Dr. Phillip C. Ahn received payments from drug or device companies?
CMS Open Payments shows $23,929 in general payments to Dr. Ahn from 55 companies from 2016 to 2025. The largest total came from SK Life Science, Inc.
How long has Dr. Phillip C. Ahn been practicing?
Dr. Ahn graduated from medical school in 1989, 37 years ago.
What insurance does Dr. Phillip C. Ahn accept?
Dr. Ahn is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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