Physician Profile
Unclaimed ProfileAbout WARNSHUIS
Devin Warnshuis is a healthcare provider located in Covina, CA. Devin is also listed as specialising in nurse practitioner — psychiatric/mental health.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Common questions
Where can I find Dr. Warnshuis?
Dr. Warnshuis is listed at 1161 E COVINA BLVD, Covina, CA 91724. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Warnshuis?
The number on file is (559) 737-1039. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Warnshuis's NPI number?
Dr. Warnshuis's National Provider Identifier is 1801564620. 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 Dr. Warnshuis been practising?
Dr. Warnshuis has 5+ years experience. Registered with an NPI since 2021. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
What is Dr. Warnshuis known for?
According to Medicare billing data, Dr. Warnshuis provides treatments such as psychotherapy with evaluation and management visit, 30 minutes and psychotherapy with evaluation and management visit, 45 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Warnshuis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Warnshuis. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (559) 737-1039
- Email not available
Practice Locations
1161 E COVINA BLVD
Covina, CA 91724
Procedures Most Often Billed to Medicare
3,595 services · 788 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
1,074 |
| Psychotherapy with evaluation and management visit, 45 minutes | Treatment | 90836 |
541 |
| Psychotherapy with evaluation and management visit, 1 hour | Treatment | 90838 |
77 |
| Psychiatric services complicated by communication factor | Treatment | 90785 |
34 |
| Psychotherapy with evaluation and management visit, 45 minutes | Treatment | 90836 |
31 |
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
27 |
| Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | Office visit | 99350 |
1,534 |
| Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99349 |
170 |
| Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes | Office visit | 99345 |
51 |
| Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | Office visit | 99350 |
23 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other providers at this location 8
Same specialty, same street address — most likely the same department or group.
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.
Also performs Psychotherapy with evaluation and management visit, 30 minutes 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.