Physician Profile
Unclaimed ProfileAbout KOLLEN
Robert Sexton Kollen, M.D practises emergency medicine in Colton, CA. Robert is a 1969 graduate of University of Minnesota Medical School.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Kollen specialise in?
Dr. Kollen is an emergency medicine in Colton, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where is Dr. Kollen located?
Dr. Kollen is listed at 400 N. PEPPER AVENUE, Colton, CA 92324. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Kollen's phone number?
The number on file is (909) 580-1400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Kollen?
Dr. Kollen's National Provider Identifier is 1073554531. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Kollen go to medical school?
Dr. Kollen attended University of Minnesota Medical School, graduating in 1969. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Kollen have?
Dr. Kollen has 57 years experience. Calculated from a graduation year of 1969, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Kollen do most often?
According to Medicare billing data, Dr. Kollen the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Kollen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kollen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (909) 580-1400
- Email not available
Practice Locations
400 N. PEPPER AVENUE
Colton, CA 92324
Procedures Most Often Billed to Medicare
28 services · 26 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
16 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
12 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other emergency medicines in Colton 8
Same specialty, same city.
Trained at University of Minnesota Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 2 related providers in 1 group
Class of 1969 at University of Minnesota Medical School 2
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.