DR. PHILLIP C. AHN M.D.
NPI 1104921832
Psychiatry & Neurology - Neurology in Los Angeles, CA

Q: What is Phillip Ahn's NPI number?

The NPI number for Phillip Ahn is 1104921832. It was assigned to this individual provider in the NPPES registry on September 14, 2006.

Q: What is Phillip Ahn's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for Phillip Ahn was last updated on July 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 14, 2006PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

520 S VIRGIL AVE., SUITE 205, LOS ANGELES, CA 90020(213) 251-3333(213) 383-3845 Get Directions Write a Review

NPPES record last updated: July 24, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Phillip C. Ahn M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. PHILLIP C. AHN M.D. (NPI 1104921832) is an individual neurology provider in Los Angeles, California, licensed in California (A52241) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1989).

NPPES Registry Identity

NPI1104921832

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. PHILLIP C. AHNCredential: M.D.

Location Address520 S VIRGIL AVE., SUITE 205Los Angeles, CA 90020-1425

Mailing Address520 S Virgil Ave., Suite 205Los Angeles, CA 90020-1425 · (213) 251-3333 · Fax (213) 383-3845

Phone(213) 251-3333

Fax(213) 383-3845

Sole ProprietorYes

Medical School CMSOtherGraduated 1989

Enumeration DateSeptember 14, 2006

Last NPPES UpdateJuly 24, 2013

✔ NPI 1104921832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in CA · A52241

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

520 S VIRGIL AVE., Los Angeles, CA 90020

Open in Google Maps ↗

Other Identifiers 4

Medicare PINA52241CA

Medicare UPING45708CA

Medicaid00A522410CA

Medicare UPING45708

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Phillip C. Ahn M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557406907

PECOS Enrollment IDI20100310000027

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 22

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, incobotulinumtoxin a, 1 unit J0588

Incobotulinumtoxin A, 1 unit, is an injection commonly known as Botox. It's used to treat various conditions like muscle spasms or wrinkles. The substance temporarily paralyzes muscles, providing relief or aesthetic improvement.

7,490 services18 patients

Injection, onabotulinumtoxina, 1 unit J0585

Onabotulinumtoxina, also known as Botox, is a medication injected into muscles. It's used to treat various conditions by blocking nerve activity in the muscles, causing a temporary reduction in muscle activity. The units refer to the dosage.

6,353 services27 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

1,203 services435 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

311 services182 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

185 services185 patients

Needle measurement of electrical activity in arm or leg muscles, complete study 95886

This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.

173 services77 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

92 services84 patients

Measurement of brain wave activity (eeg), awake and drowsy 95816

Measurement of brain wave activity, also known as an EEG, is a non-invasive test that records electrical patterns in your brain. This procedure is done when you're awake and drowsy to understand how your brain functions during different states of consciousness.

72 services72 patients

Measurement of nerve conduction using visual stimulation testing with report 95930

This procedure involves testing the speed and strength of signals traveling through your nerves, using visual stimuli. It helps identify any nerve damage or dysfunction. A report of the results is provided for further analysis.

72 services72 patients

Measurement of brain wave activity (eeg), digital analysis 95957

The measurement of brain wave activity, or EEG, involves recording and analyzing electrical signals from your brain. Small sensors are placed on the scalp to capture these signals. This digital analysis helps in diagnosing conditions like epilepsy or sleep disorders.

72 services72 patients

Evaluation of neuropsychological test, first hour 96132

An evaluation of neuropsychological tests is a process to assess your brain's function. It involves tasks designed to measure cognitive abilities such as memory, attention, problem-solving, and language skills. The first hour involves initial testing and observation.

72 services72 patients

Administration of psychological or neuropsychological test by technician, first 30 minutes 96138

This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.

72 services72 patients

Injection of chemical for paralysis of nerve muscles on side of face 64612

This procedure involves injecting a chemical into specific facial nerves, causing temporary muscle paralysis. It's used to treat conditions like facial spasms or wrinkles. The effects are usually temporary, requiring repeat treatments.

69 services21 patients

Injection, mepivacaine hydrochloride, per 10 ml J0670

Mepivacaine hydrochloride injection is a local anesthetic used to numb a specific area of your body during minor surgeries or procedures. It helps to reduce pain and discomfort. The 10 ml denotes the volume of the solution that will be used.

52 services22 patients

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

52 services22 patients

Nerve conduction, 7-8 studies 95910

Nerve conduction studies involve testing the speed and strength of signals traveling through your nerves. This helps doctors identify nerve damage. In a 7-8 study procedure, 7-8 specific nerves are tested. You may feel a mild, brief tingling or shock during the test.

34 services34 patients

Measurement of brain wave activity (eeg), awake and asleep 95819

The measurement of brain wave activity, known as an EEG, records the brain's electrical signals. It's performed when you're awake and asleep to monitor your brain's functioning. It helps in diagnosing conditions like epilepsy, sleep disorders, and other neurological issues.

33 services33 patients

Injection by continuous infusion of anesthetic agent into lower back nerve bundle 64449

This procedure involves a steady flow of anesthetic medication into your lower back nerve bundle. It's done to manage pain effectively. A small tube delivers the anesthetic continuously, numbing the specific area and reducing discomfort.

32 services15 patients

Assessment of and care planning for patient with impaired thought processing, typically 60 minutes 99483

This service involves a thorough evaluation of your thought processes, which may be impacting your daily life. In a typical 50-minute session, a healthcare professional will assess your cognitive abilities, identify any areas of concern, and develop a personalized care plan to help improve your mental function.

27 services27 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

25 services21 patients

Nerve conduction, 9-10 studies 95911

Nerve conduction studies involve sending small electrical shocks through the skin to measure how quickly nerves transmit signals. This helps detect nerve damage. 9-10 studies mean this process will be repeated on different nerves to gather comprehensive data.

23 services22 patients

Nerve conduction, 13 or more studies 95913

Nerve conduction studies involve 13 or more tests to check the speed and strength of signals traveling between your nerves and muscles. It helps diagnose conditions affecting nerves and muscles. The test involves small shocks and may cause minor discomfort.

16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90020 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Reported Quality Measures

Assessment of Cognitive Impairment or Dysfunction for Patients with Parkinson's Disease

100%58 patients5/55-star benchmark: 100%

Assessment of Mood Disorders and Psychosis for Patients with Parkinson's Disease

100%58 patients

Dementia: Education and Support of Caregivers for Patients with Dementia

100%105 patients

Dementia: Functional Status Assessment

100%105 patients

Dementia: Safety Concern Screening and Follow-Up for Patients with Dementia

100%105 patients

Documentation of Current Medications in the Medical Record

100%988 patients5/55-star benchmark: 100%

Rehabilitative Therapy Referral for Patients with Parkinson's Disease

100%58 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Leave this field empty

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Phillip Ahn's NPI number?

The NPI number for Phillip Ahn is 1104921832. It was assigned to this individual provider in the NPPES registry on September 14, 2006.

Where is Phillip Ahn located?

Phillip Ahn practices at 520 S Virgil Ave. Suite 205, Los Angeles, CA 90020. The listed phone number is (213) 251-3333.

What is Phillip Ahn's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Phillip Ahn enrolled in Medicare?

Yes. Phillip Ahn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Phillip Ahn was last updated on July 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.