DR. RONALD E PHILLIPS PHD, APRN, AGACNP-BC
NPI 1437612538
Nurse Practitioner - Critical Care Medicine in Oakland, CA
About Dr. Ronald E Phillips Phd, Aprn, Agacnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RONALD E PHILLIPS PHD, APRN, AGACNP-BC (NPI 1437612538) is an individual critical care medicine provider in Oakland, California, licensed in California (95011464) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Ronald E Phillips Phd, Aprn, Agacnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Ronald Phillips reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 clinicians in this Medicare group
Napa, CA 94558
- Reassigned Medicare billing, California enrollment
- 1,699 clinicians in this Medicare group
Carson City, NV 89703
- Reassigned Medicare billing, Nevada enrollment
- 55 clinicians in this Medicare group
Austin, TX 78758
- Reassigned Medicare billing, Texas enrollment
- 1,188 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 94602 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.
OAKLAND, CA 94602
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 Ronald Phillips's NPI number?
The NPI number for Ronald Phillips is 1437612538. It was assigned to this individual provider in the NPPES registry on April 8, 2019.
Where is Ronald Phillips located?
Ronald Phillips practices at 1411 E 31st St, Oakland, CA 94602. The listed phone number is (510) 437-4800.
What is Ronald Phillips's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is Ronald Phillips enrolled in Medicare?
Yes. Ronald Phillips is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ronald Phillips's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Phillips reassigns Medicare benefits to 6 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), University Anesthesia Medical Group (San Francisco, CA), Providence Medical Foundation (Napa, CA), Usacs Integrated Acute Care Services Of Nevada Bagnoli P C (Carson City, NV) 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 Ronald Phillips's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ronald Phillips accept?
Health plans from Oscar Insurance Company and Sendero Health Plans, Local Nonprofit list Ronald Phillips as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Ronald Phillips was last updated on July 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Ronald E Phillips, PHD, APRN, AGACNP-BC · NPI 1437612538
Critical Care Medicine physician in Oakland, California. Individual provider, active in the CMS NPPES registry since April 8, 2019.
## Identity
- **NPI:** 1437612538 (Entity type: Individual)
- **Enumerated:** April 8, 2019
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** 95011464 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1411 E 31ST ST, Oakland, CA 94602-1092
- **Phone:** (510) 437-4800
## 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): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); Providence Medical Foundation (NPI 1205131950, Napa, CA); Usacs Integrated Acute Care Services Of Nevada Bagnoli P C (NPI 1063608701, Carson City, NV); and 1 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1437612538) · Data from the CMS NPPES public registry.