Physician Profile
Unclaimed ProfileAbout NAPPER
Clay Hughes Napper, M.D. practises diagnostic radiology in San Mateo, CA. Clay is a 1992 graduate of Wake Forest University School of Medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Napper's specialty?
Dr. Napper is a diagnostic radiology in San Mateo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where can I find Dr. Napper?
Dr. Napper is listed at 100 S SAN MATEO DR, San Mateo, CA 94401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Napper?
The number on file is (650) 696-4515. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Napper?
Dr. Napper's National Provider Identifier is 1053352815. 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
What is Dr. Napper's medical education?
Dr. Napper attended Wake Forest University School of Medicine, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Napper have?
Dr. Napper has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Napper known for?
According to Medicare billing data, Dr. Napper performs imaging including x-ray of chest, 1 view and ct scan head or brain without contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Napper's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Napper. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (650) 696-4515
- Email not available
Practice Locations
100 S SAN MATEO DR
San Mateo, CA 94401
Procedures Most Often Billed to Medicare
2,174 services · 2,088 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
473 |
| Ct scan head or brain without contrast | Imaging | 70450 |
202 |
| X-ray of chest, 2 views | Imaging | 71046 |
191 |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
179 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
110 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | Imaging | 78815 |
96 |
| Limited ultrasound scan of abdomen | Imaging | 76705 |
88 |
| Complete ultrasound scan behind abdominal cavity | Imaging | 76770 |
73 |
| Screening mammography | Imaging | 77067 |
62 |
| Screening 3d breast mammography | Imaging | 77063 |
62 |
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.
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 diagnostic radiology specialists in San Mateo 8
Same specialty, same city.
Trained at Wake Forest University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1992 at Wake Forest University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 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.