ROBERT GERALD DEISS MD
NPI 1194977652
Internal Medicine in San Diego, CA
About Robert Gerald Deiss Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT GERALD DEISS MD (NPI 1194977652) is an individual internal medicine provider in San Diego, California, licensed in California (A111310) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Diego, and is a graduate of University Of California, San Diego School Of Medicine (2007).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Robert Gerald Deiss Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Robert Deiss reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 1,051 clinicians in this Medicare group
San Diego, CA 92101
- Reassigned Medicare billing, California enrollment
- 105 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Deiss's NPI number?
The NPI number for Robert Deiss is 1194977652. It was assigned to this individual provider in the NPPES registry on October 15, 2008.
Where is Robert Deiss located?
Robert Deiss practices at 4168 Front St Fl 3, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Robert Deiss's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Robert Deiss enrolled in Medicare?
Yes. Robert Deiss is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Robert Deiss's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Deiss reassigns Medicare benefits to 2 organizations: Regents Of The University Of California (San Diego, CA) and County Of San Diego (San Diego, CA). Each 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 Deiss'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 Deiss was last updated on January 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Robert Gerald Deiss, MD · NPI 1194977652
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since October 15, 2008.
## Identity
- **NPI:** 1194977652 (Entity type: Individual)
- **Enumerated:** October 15, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A111310 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4168 FRONT ST FL 3, San Diego, CA 92103-2030
- **Phone:** (800) 926-8273 · **Fax:** (888) 539-8781
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1487772380, San Diego, CA); County Of San Diego (NPI 1225255375, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2007
## Record status
- **NPPES last updated:** January 21, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1194977652) · Data from the CMS NPPES public registry.