RAMIRO GUILLEN MD
NPI 1104993500
Psychiatry & Neurology - Child & Adolescent Psychiatry in Scottsdale, AZ
About Ramiro Guillen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RAMIRO GUILLEN MD (NPI 1104993500) is an individual child & adolescent psychiatry provider in Scottsdale, Arizona, licensed in Arizona (31653) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1985).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
Accepted Insurance
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
Ramiro Guillen Md 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
3Medicare enrollment records show Ramiro Guillen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Scottsdale, AZ 85254
- Reassigned Medicare billing, Arizona enrollment
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 clinicians in this Medicare group
Phoenix, AZ 85012
- Reassigned Medicare billing, Arizona enrollment
- 54 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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SCOTTSDALE, AZ 85254
SCOTTSDALE, AZ 85254
SCOTTSDALE, AZ 85254
SCOTTSDALE, AZ 85254
SCOTTSDALE, AZ 85254
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 Ramiro Guillen's NPI number?
The NPI number for Ramiro Guillen is 1104993500. It was assigned to this individual provider in the NPPES registry on November 29, 2006.
Where is Ramiro Guillen located?
Ramiro Guillen practices at 11333 N Scottsdale Rd Suite 280, Scottsdale, AZ 85254. The listed phone number is (480) 367-1500.
What is Ramiro Guillen's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Ramiro Guillen enrolled in Medicare?
Yes. Ramiro Guillen 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 Ramiro Guillen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ramiro Guillen reassigns Medicare benefits to 3 organizations: Central Nervous System Center, P L L C (Scottsdale, AZ), District Medical Group, Inc (Phoenix, AZ) and Lifewell Behavioral Wellness (Phoenix, AZ). 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 Ramiro Guillen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ramiro Guillen accept?
Health plans from Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Cigna HealthCare of Florida, Inc., Cigna Healthcare and Imperial Insurance Companies, Inc. and 3 other insurers list Ramiro Guillen 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 Ramiro Guillen was last updated on April 18, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Ramiro Guillen, MD · NPI 1104993500
Child & Adolescent Psychiatry physician in Scottsdale, Arizona. Individual provider, active in the CMS NPPES registry since November 29, 2006.
## Identity
- **NPI:** 1104993500 (Entity type: Individual)
- **Enumerated:** November 29, 2006
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 31653 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 11333 N SCOTTSDALE RD, SUITE 280, Scottsdale, AZ 85254-5185
- **Phone:** (480) 367-1500 · **Fax:** (480) 367-1501
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Central Nervous System Center, P L L C (NPI 1912591462, Scottsdale, AZ); District Medical Group, Inc (NPI 1174856280, Phoenix, AZ); Lifewell Behavioral Wellness (NPI 1417050337, Phoenix, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** April 18, 2008
- **Other identifiers:** Medicare UPIN H09534 (AZ); Medicaid 816142 (AZ)
---
Source: [NPI Profile](https://npiprofile.com/npi/1104993500) · Data from the CMS NPPES public registry.