Provider Profile
Monica H. Lieu, PA
Unclaimed ProfileAbout Monica Lieu
Monica H. Lieu, PA is a physician assistant based in Santa Ana, CA. Medicare claims data shows Monica provided 279 services to 229 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, urinalysis, manual test, and telephone medical discussion with physician, 5-10 minutes. The provider's National Provider Identifier (NPI) is 1184225377.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (714) 545-5550
- Email not available
Practice Locations
999 N TUSTIN AVE STE 216
Santa Ana, CA 92705
Procedures Most Often Billed to Medicare
279 services · 229 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
191 | More often than most peers in Physician Assistant |
| Urinalysis, manual test | Lab test | 81002 |
23 | As often as other peers in Physician Assistant |
| Telephone medical discussion with physician, 5-10 minutes | Office visit | 99441 |
20 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
17 | Less often than most peers in Physician Assistant |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | Lab test | 87635 |
16 | Less often than most peers in Physician Assistant |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
12 | Less often than most peers in Physician Assistant |
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.
Other physician assistants at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 24 related providers in 3 groups
Other physician assistants in Santa Ana 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Monica H. Lieu specialize in?
Monica H. Lieu is a physician assistant in Santa Ana, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Monica H. Lieu located?
Monica H. Lieu is listed at 999 N Tustin Ave Ste 216, Santa Ana, CA 92705. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Monica H. Lieu's phone number?
The number on file is (714) 545-5550. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Monica H. Lieu?
Monica H. Lieu's National Provider Identifier is 1184225377. 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 Monica H. Lieu train?
Monica H. Lieu attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Monica H. Lieu have?
Monica H. Lieu has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What does Monica H. Lieu do most often?
According to Medicare billing data, Monica H. Lieu the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Monica H. Lieu's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Monica H. Lieu. If this is you, claiming it is free.
Guide.md
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