Are you Cassandra L. Karn, P.A.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 27700 Medical Center Rd, Mission Viejo, CA 92691
About Cassandra Karn
Cassandra L. Karn, P.A. is a physician assistant based in Mission Viejo, CA. According to Medicare claims data, Cassandra cared for 108 Medicare patients across 111 services. The services billed most often include emergency department visit with high level of medical decision making, emergency department visit with moderate level of medical decision making, and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only. The provider's National Provider Identifier (NPI) is 1245247774.
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
- (949) 365-3862
- Email not available
Practice Locations
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
Procedures Most Often Billed to Medicare
111 services · 108 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
20 | 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 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
32 | As often as other peers in Physician Assistant |
| Critical care, first 30-74 minutes | Office visit | 99291 |
13 | Less often than most peers in Physician Assistant |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
11 | 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 5
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 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 — 12 related providers in 2 groups
Other physician assistants in Mission Viejo 4
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 does Cassandra L. Karn specialize in?
Cassandra L. Karn is a physician assistant in Mission Viejo, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Cassandra L. Karn located?
Cassandra L. Karn is listed at 27700 Medical Center Rd, Mission Viejo, CA 92691. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Cassandra L. Karn's phone number?
The number on file is (949) 365-3862. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Cassandra L. Karn's NPI number?
Cassandra L. Karn's National Provider Identifier is 1245247774. 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 long has Cassandra L. Karn been practicing?
Cassandra L. Karn has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Cassandra L. Karn do most often?
According to Medicare billing data, Cassandra L. Karn 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
Has Cassandra L. Karn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Cassandra L. Karn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.