Provider Profile
Jason Justin, PA-C
Unclaimed ProfileAbout Jason Justin
Listed in the NPI registry as a physician assistant, Jason Justin, PA-C practices in Mill Valley, CA. Jason is also listed as specializing in physician assistant — surgical. Medicare claims data shows Jason provided 729 services to 396 patients. The services billed most often include injection, triamcinolone acetonide, not otherwise specified, 10 mg, aspiration and/or injection of fluid from large joint, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
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
- (415) 384-4778
- Email not available
Practice Locations
750 REDWOOD HWY FRONTAGE RD STE 1204
Mill Valley, CA 94941
34 Mark West Springs Rd
Santa Rosa, CA 95403
434 S San Vicente Blvd # 100
Los Angeles, CA 90048
Procedures Most Often Billed to Medicare
729 services · 396 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
109 | More often than most peers in Physician Assistant |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
11 | Less often than most peers in Physician Assistant |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
370 | More often than most 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 |
86 | 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 |
65 | As often as other peers in Physician Assistant |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
57 | More often than most 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 |
31 | As often as other 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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other physician assistants in Mill Valley 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Jason Justin specialize in?
Jason Justin is a physician assistant in Mill Valley, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Jason Justin located?
Jason Justin is listed at 750 Redwood Hwy Frontage Rd Ste 1204, Mill Valley, CA 94941. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Jason Justin's phone number?
The number on file is (415) 384-4778. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Jason Justin?
Jason Justin's National Provider Identifier is 1265967079. 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 Jason Justin train?
Jason Justin attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Jason Justin have?
Jason Justin has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What does Jason Justin do most often?
According to Medicare billing data, Jason Justin performs procedures including aspiration and/or injection of fluid from large joint and replacement of knee joint, both sides of knee, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Jason Justin's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Jason Justin. 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.