Provider Profile
William L. Van der Reis
Unclaimed ProfileAbout William Van Der Reis
William L. Van der Reis is a specialist based in San Clemente, CA. William is a 1993 graduate of Js Weill Medical College, Cornell University. According to Medicare claims data, William cared for 347 Medicare patients across 657 services. The services billed most often include injection, triamcinolone acetonide, not otherwise specified, 10 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and aspiration and/or injection of fluid from large joint.
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
- (949) 661-2423
- Email not available
Practice Locations
653 CAMINO DE LOS MARES STE 109
San Clemente, CA 92673
Procedures Most Often Billed to Medicare
657 services · 347 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
68 | As often as other peers in Specialist |
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
26 | As often as other peers in Specialist |
| X-ray of knee, 4 or more views | Imaging | 73564 |
19 | Less often than most peers in Specialist |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
281 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
105 | As often as other peers in Specialist |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
66 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
47 | As often as other peers in Specialist |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
19 | More often than most peers in Specialist |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
14 | Less often than most peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
12 | Less often than most peers in Specialist |
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 specialists at this location 1
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.
Other specialists in San Clemente 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Js Weill Medical College, Cornell University 8
Other providers in the same specialty who trained at the same institution.
Class of 1993 at Js Weill Medical College, Cornell University 7
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 kind of doctor is William L. Van der Reis?
William L. Van der Reis is a specialist in San Clemente, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is William L. Van der Reis's address?
William L. Van der Reis is listed at 653 Camino de Los Mares Ste 109, San Clemente, CA 92673. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with William L. Van der Reis?
The number on file is (949) 661-2423. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is William L. Van der Reis's NPI number?
William L. Van der Reis's National Provider Identifier is 1710911078. 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 William L. Van der Reis train?
William L. Van der Reis attended Js Weill Medical College, Cornell University, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How long has William L. Van der Reis been practicing?
William L. Van der Reis has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What procedures does William L. Van der Reis perform?
According to Medicare billing data, William L. Van der Reis performs procedures including aspiration and/or injection of fluid from large joint; reads or performs imaging such as x-ray of knee, 4 or more views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William L. Van der Reis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William L. Van der Reis. 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.