DR. FREDDY S CALDERON M.D.
NPI 1932316338
Internal Medicine - Nephrology in Pasadena, CA
About Dr. Freddy S Calderon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FREDDY S CALDERON M.D. (NPI 1932316338) is an individual nephrology provider in Pasadena, California, licensed in California (A96401) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Freddy S Calderon M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Freddy Calderon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90041
- Reassigned Medicare billing, California enrollment
- 13,921 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91188 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 20
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 Freddy Calderon's NPI number?
The NPI number for Freddy Calderon is 1932316338. It was assigned to this individual provider in the NPPES registry on May 16, 2007.
Where is Freddy Calderon located?
Freddy Calderon practices at 393 E Walnut St 3rd Floor Phrs, Pasadena, CA 91188. The listed phone number is (626) 405-7914.
What is Freddy Calderon's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Freddy Calderon enrolled in Medicare?
Yes. Freddy Calderon is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Freddy Calderon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Freddy Calderon reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, 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 Freddy Calderon'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 Freddy Calderon was last updated on November 29, 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. Freddy S Calderon, M.D. · NPI 1932316338
Nephrology physician in Pasadena, California. Individual provider, active in the CMS NPPES registry since May 16, 2007.
## Identity
- **NPI:** 1932316338 (Entity type: Individual)
- **Enumerated:** May 16, 2007
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** A96401 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 393 E WALNUT ST, 3RD FLOOR PHRS, Pasadena, CA 91188-0001
- **Phone:** (626) 405-7914
## 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:** Southern California Permanente Medical Group (NPI 1013409044, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 29, 2021
- **Other identifiers:** Other A96401 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1932316338) · Data from the CMS NPPES public registry.