DR. ROBERT NATHAN CLAPP M.D.
NPI 1689721136
General Practice in Oceanside, CA
About Dr. Robert Nathan Clapp M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT NATHAN CLAPP M.D. (NPI 1689721136) is an individual general practice provider in Oceanside, California, licensed in Alabama (MD.27192) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Robert Nathan Clapp M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Robert Clapp reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Robert Clapp's NPI number?
The NPI number for Robert Clapp is 1689721136. It was assigned to this individual provider in the NPPES registry on January 5, 2007.
Where is Robert Clapp located?
Robert Clapp practices at 328 Angeles St, Oceanside, CA 92058. The listed phone number is (760) 237-6958.
What is Robert Clapp's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Robert Clapp enrolled in Medicare?
Yes. Robert Clapp is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Robert Clapp's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Clapp reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert Clapp's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Robert Clapp was last updated on December 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Robert Nathan Clapp, M.D. · NPI 1689721136
General Practice physician in Oceanside, California. Individual provider, active in the CMS NPPES registry since January 5, 2007.
## Identity
- **NPI:** 1689721136 (Entity type: Individual)
- **Enumerated:** January 5, 2007
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** MD.27192 (Alabama)
- **Sole proprietor:** No
## Practice location
- **Address:** 328 ANGELES ST, Oceanside, CA 92058-8255
- **Phone:** (760) 237-6958
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 20, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1689721136) · Data from the CMS NPPES public registry.