JOHN GASPAR AGTUCA D.O.
NPI 1306200183
Internal Medicine in Riverside, CA
About John Gaspar Agtuca D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN GASPAR AGTUCA D.O. (NPI 1306200183) is an individual internal medicine provider in Riverside, California, licensed in California (20A16933) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Corona, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2016).
NPPES Registry Identity
Specialties & Licenses
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
John Gaspar Agtuca D.o. 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 John Agtuca reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Riverside, CA 92506
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Norco, CA 92860
- Reassigned Medicare billing, California enrollment
- 24 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 2
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 92506 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
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 John Agtuca's NPI number?
The NPI number for John Agtuca is 1306200183. It was assigned to this individual provider in the NPPES registry on April 7, 2016.
Where is John Agtuca located?
John Agtuca practices at 6900 Brockton Ave Ste 100, Riverside, CA 92506. The listed phone number is (951) 781-3800.
What is John Agtuca's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Agtuca enrolled in Medicare?
Yes. John Agtuca 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 John Agtuca's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Agtuca reassigns Medicare benefits to 2 organizations: Platinum Providers Medical Group Inc (Riverside, CA) and Citrus Valley Medical Associates, Inc. (Norco, 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 John Agtuca'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 John Agtuca was last updated on August 17, 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.
# John Gaspar Agtuca, D.O. · NPI 1306200183
Internal Medicine physician in Riverside, California. Individual provider, active in the CMS NPPES registry since April 7, 2016.
## Identity
- **NPI:** 1306200183 (Entity type: Individual)
- **Enumerated:** April 7, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20A16933 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 6900 BROCKTON AVE STE 100, Riverside, CA 92506-3817
- **Phone:** (951) 781-3800 · **Fax:** (951) 781-1973
## 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): Platinum Providers Medical Group Inc (NPI 1275018392, Riverside, CA); Citrus Valley Medical Associates, Inc. (NPI 1306033709, Norco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2016
## Record status
- **NPPES last updated:** August 17, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1306200183) · Data from the CMS NPPES public registry.