Provider Profile
Garrett J. Kobayashi
Unclaimed ProfileAbout Garrett Kobayashi
Garrett J. Kobayashi is a physician assistant based in Mesa, AZ. According to Medicare claims data, Garrett cared for 428 Medicare patients across 692 services. The services billed most often include injection, dexamethasone sodium phosphate, 1 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and detection test by immunoassay with direct visual observation for influenza virus.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (661) 755-3421
- Email not available
Practice Locations
5850 E STILL CIR
Mesa, AZ 85206
1895 N Jasper Dr Ste 3
Flagstaff, AZ 86001
Procedures Most Often Billed to Medicare
692 services · 428 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
42 | More often than most peers in Physician Assistant |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
170 | As often as other peers in Physician Assistant |
| Injection, ketorolac tromethamine, per 15 mg | Drug given | J1885 |
50 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
144 | More often than most peers in Physician Assistant |
| Detection test by immunoassay with direct visual observation for influenza virus | Lab test | 87804 |
95 | More often than most 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 |
54 | As often as other peers in Physician Assistant |
| Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | Lab test | 87426 |
54 | More often than most peers in Physician Assistant |
| Automated urinalysis test | Lab test | 81003 |
32 | As often as other peers in Physician Assistant |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
21 | As often as other peers in Physician Assistant |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
15 | 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 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 28 related providers in 4 groups
Other physician assistants in Mesa 4
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2022 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in AZ who bill this service to Medicare most often.
Common questions
What is Garrett J. Kobayashi's specialty?
Garrett J. Kobayashi is a physician assistant in Mesa, AZ. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Garrett J. Kobayashi?
Garrett J. Kobayashi is listed at 5850 E Still Cir, Mesa, AZ 85206. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Garrett J. Kobayashi?
The number on file is (661) 755-3421. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Garrett J. Kobayashi's NPI number?
Garrett J. Kobayashi's National Provider Identifier is 1376214684. 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
What is Garrett J. Kobayashi's education?
Garrett J. Kobayashi attended Other, graduating in 2022. This comes from the CMS National Downloadable File.
CMS public data
How long has Garrett J. Kobayashi been practicing?
Garrett J. Kobayashi has 4 years experience. Calculated from a graduation year of 2022, reported in the CMS National Downloadable File.
CMS public data
What is Garrett J. Kobayashi known for?
According to Medicare billing data, Garrett J. Kobayashi provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Garrett J. Kobayashi confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Garrett J. Kobayashi. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.