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Edit this profileAt a glance
- 3751 Katella Ave, Los Alamitos, CA 90720
About Troy Williamson
Troy Williamson is a physician assistant practicing in Los Alamitos, CA. Medicare claims data shows Troy provided 91 services to 78 patients. The services billed most often include emergency department visit with moderate level of medical decision making, emergency department visit with high level of medical decision making, and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only. This provider record is associated with NPI 1750166591.
Factual summary compiled by Guide.md from public records; not written by this provider.
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
- (562) 598-1311
- Email not available
Practice Locations
3751 KATELLA AVE
Los Alamitos, CA 90720
Procedures Most Often Billed to Medicare
91 services · 78 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
12 | Less often than most peers in Physician Assistant |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
44 | As often as other peers in Physician Assistant |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
35 | 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 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 — 15 related providers in 2 groups
Other physician assistants in Los Alamitos 7
Same specialty, same city.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Troy Williamson?
Troy Williamson is a physician assistant in Los Alamitos, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Troy Williamson's address?
Troy Williamson is listed at 3751 Katella Ave, Los Alamitos, CA 90720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Troy Williamson?
The number on file is (562) 598-1311. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Troy Williamson?
Troy Williamson's National Provider Identifier is 1750166591. 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
How much experience does Troy Williamson have?
Troy Williamson has 3+ years experience. Registered with an NPI since 2023. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What procedures does Troy Williamson perform?
According to Medicare billing data, Troy Williamson provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Troy Williamson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Troy Williamson. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.