MOHAMED BASSYOUNYABOUELEININ ELNAGGAR MD
NPI 1801317888
Internal Medicine in San Diego, CA
About Mohamed Bassyounyaboueleinin Elnaggar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MOHAMED BASSYOUNYABOUELEININ ELNAGGAR MD (NPI 1801317888) is an individual internal medicine provider in San Diego, California, licensed in California (210209) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, maintains 6 additional practice locations, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 6
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
Mohamed Bassyounyaboueleinin Elnaggar 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
4Medicare enrollment records show Mohamed Elnaggar reassigns Medicare billing to 4 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
Meriden, CT 06451
- Reassigned Medicare billing, Connecticut enrollment
- 505 clinicians in this Medicare group
New Britain, CT 06052
- Reassigned Medicare billing, Connecticut enrollment
- 745 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 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
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Mohamed Elnaggar's NPI number?
The NPI number for Mohamed Elnaggar is 1801317888. It was assigned to this individual provider in the NPPES registry on June 29, 2017.
Where is Mohamed Elnaggar located?
Mohamed Elnaggar practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Mohamed Elnaggar's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mohamed Elnaggar enrolled in Medicare?
Yes. Mohamed Elnaggar 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 Mohamed Elnaggar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mohamed Elnaggar reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Diego, CA), Midstate Medical Center (Meriden, CT), The Hospital Of Central Connecticut At New Britain General And Bradley (New Britain, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). 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 Mohamed Elnaggar'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 Mohamed Elnaggar was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mohamed Bassyounyaboueleinin Elnaggar, MD · NPI 1801317888
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since June 29, 2017.
## Identity
- **NPI:** 1801317888 (Entity type: Individual)
- **Enumerated:** June 29, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 210209 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **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:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1487772380, San Diego, CA); Midstate Medical Center (NPI 1154425288, Meriden, CT); The Hospital Of Central Connecticut At New Britain General And Bradley (NPI 1053477075, New Britain, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1801317888) · Data from the CMS NPPES public registry.