DR. RAGU CHANDRASEKHARAN NATHAN MD
NPI 1467413344
Radiology - Diagnostic Radiology in Stanford, CA
About Dr. Ragu Chandrasekharan Nathan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RAGU CHANDRASEKHARAN NATHAN MD (NPI 1467413344) is an individual diagnostic radiology provider in Stanford, California, licensed in California (A55278) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Sacramento.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
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. Ragu Chandrasekharan Nathan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Ragu Nathan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hanford, CA 93230
- Reassigned Medicare billing, California enrollment
- 139 clinicians in this Medicare group
Chico, CA 95926
- Reassigned Medicare billing, California enrollment
- 58 clinicians in this Medicare group
Reedley, CA 93654
- Reassigned Medicare billing, California enrollment
- 315 clinicians in this Medicare group
Tulare, CA 93274
- Reassigned Medicare billing, California enrollment
- 119 clinicians in this Medicare group
Delano, CA 93215
- Reassigned Medicare billing, California enrollment
- 252 clinicians in this Medicare group
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 62 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 3
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 94305 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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Ragu Nathan's NPI number?
The NPI number for Ragu Nathan is 1467413344. It was assigned to this individual provider in the NPPES registry on March 30, 2006. The provider is also known as Dr. Chandrasekharan Ragunathan MD.
Where is Ragu Nathan located?
Ragu Nathan practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Ragu Nathan's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Ragu Nathan enrolled in Medicare?
Yes. Ragu Nathan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ragu Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ragu Nathan reassigns Medicare benefits to 6 organizations: Hanford Community Hospital (Hanford, CA), Halo Medical Group (Chico, CA), Reedley Community Hospital (Reedley, CA), Adventist Health Tulare (Tulare, CA), Kern Radiology Medical Group (Delano, CA) and 1 more organization, listed in the Medicare section above. 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 Ragu Nathan'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 Ragu Nathan was last updated on March 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Ragu Chandrasekharan Nathan, MD · NPI 1467413344
Diagnostic Radiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since March 30, 2006.
## Identity
- **NPI:** 1467413344 (Entity type: Individual)
- **Enumerated:** March 30, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A55278 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Hanford Community Hospital (NPI 1538141627, Hanford, CA); Halo Medical Group (NPI 1154950236, Chico, CA); Reedley Community Hospital (NPI 1336167550, Reedley, CA); Adventist Health Tulare (NPI 1801366711, Tulare, CA); Kern Radiology Medical Group (NPI 1790109130, Delano, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 28, 2023
- **Other identifiers:** Medicaid 0141763 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1467413344) · Data from the CMS NPPES public registry.