Physician Profile
Unclaimed ProfileAbout PHAN
Based in Fountain Valley, CA, Duke An Michael Phan, MD is listed in the NPI registry under neurology. Duke graduated from Geisel School of Medicine at Dartmouth in 1991. According to Medicare claims data, Duke cared for 545 Medicare patients across 1,121 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 546-4367
- Email not available
Practice Locations
17220 NEWHOPE ST SUITE 217
Fountain Valley, CA 92708
Procedures Most Often Billed to Medicare
1,121 services · 545 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Measurement of brain wave activity (eeg), awake and drowsy | Treatment | 95816 |
45 |
| Needle measurement of electrical activity in arm or leg muscles, complete study | Treatment | 95886 |
19 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
538 |
| Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by t | Billing code | G0316 |
163 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
93 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
77 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
77 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
56 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
53 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other neurology specialists in Fountain Valley 8
Same specialty, same city.
Trained at Geisel School of Medicine at Dartmouth 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1991 at Geisel School of Medicine at Dartmouth 8
Providers who graduated from the same medical school in the same year.
Also performs Measurement of brain wave activity (eeg), awake and drowsy 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Phan specialize in?
Dr. Phan is a neurology in Fountain Valley, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEUROLOGY”.
NPI registry
Where is Dr. Phan located?
Dr. Phan is listed at 17220 NEWHOPE ST SUITE 217, Fountain Valley, CA 92708. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Phan's phone number?
The number on file is (714) 546-4367. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Phan's NPI number?
Dr. Phan's National Provider Identifier is 1437352630. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Phan go to medical school?
Dr. Phan attended Geisel School of Medicine at Dartmouth, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Phan been practicing?
Dr. Phan has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Phan do most often?
According to Medicare billing data, Dr. Phan provides treatments such as measurement of brain wave activity , awake and drowsy and needle measurement of electrical activity in arm or leg muscles, complete study, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Phan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Phan. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.