ROBERT SEXTON KOLLEN M.D
NPI 1073554531
Emergency Medicine in Colton, CA
About Robert Sexton Kollen M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT SEXTON KOLLEN M.D (NPI 1073554531) is an individual emergency medicine provider in Colton, California, licensed in California (C33600) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Minnesota Medical School (1969).
NPPES Registry Identity
Specialties & Licenses
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
Robert Sexton Kollen M.d 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 Robert Kollen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 163 clinicians in this Medicare group
Modesto, CA 95354
- Reassigned Medicare billing, California enrollment
- 180 clinicians in this Medicare group
Cedarville, CA 96104
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1801973052 (California)
- 9 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 92324 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLTON, CA 92324
COLTON, CA 92324
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 Robert Kollen's NPI number?
The NPI number for Robert Kollen is 1073554531. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is Robert Kollen located?
Robert Kollen practices at 400 N. Pepper Avenue, Colton, CA 92324. The listed phone number is (909) 580-1400.
What is Robert Kollen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Kollen enrolled in Medicare?
Yes. Robert Kollen 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 Robert Kollen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Kollen reassigns Medicare benefits to 4 organizations: Cep America - California (Colton, CA), Grand Avenue Emergency Physicians Medical Group Inc (Bakersfield, CA), American Specialty Physicians Group Inc (Modesto, CA) and Surprise Valley Health Care District (Cedarville, 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 Robert Kollen'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 Robert Kollen 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.
# Robert Sexton Kollen, M.D · NPI 1073554531
Emergency Medicine physician in Colton, California. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1073554531 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** C33600 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 N. PEPPER AVENUE, Colton, CA 92324
- **Phone:** (909) 580-1400
## 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): Cep America - California (NPI 1306899166, Colton, CA); Grand Avenue Emergency Physicians Medical Group Inc (NPI 1962913632, Bakersfield, CA); American Specialty Physicians Group Inc (NPI 1164363024, Modesto, CA); Surprise Valley Health Care District (NPI 1023194222, Cedarville, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 1969
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1073554531) · Data from the CMS NPPES public registry.