MANUEL GUILLEN MD
NPI 1811092414
Allergy & Immunology - Allergy in Great Falls, VA
About Manuel Guillen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MANUEL GUILLEN MD (NPI 1811092414) is an individual allergy provider in Great Falls, Virginia, licensed in Virginia (0101032457) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Manuel Guillen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Manuel Guillen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Great Falls, VA 22066
- Reassigned Medicare billing, District of Columbia enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Manuel Guillen's NPI number?
The NPI number for Manuel Guillen is 1811092414. It was assigned to this individual provider in the NPPES registry on September 14, 2006.
Where is Manuel Guillen located?
Manuel Guillen practices at 101 34 D Colvin Run Road, Great Falls, VA 22066. The listed phone number is (703) 757-7950.
What is Manuel Guillen's specialty?
The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.
Is Manuel Guillen enrolled in Medicare?
Yes. Manuel Guillen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Manuel Guillen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Manuel Guillen reassigns Medicare benefits to Virginia Allergy PLLC (Great Falls, VA). The 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 Manuel Guillen'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 Manuel Guillen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Manuel Guillen, MD · NPI 1811092414
Allergy physician in Great Falls, Virginia. Individual provider, active in the CMS NPPES registry since September 14, 2006.
## Identity
- **NPI:** 1811092414 (Entity type: Individual)
- **Enumerated:** September 14, 2006
- **Primary specialty:** Allergy & Immunology - Allergy · taxonomy 207KA0200X
- **State license:** 0101032457 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 34 D COLVIN RUN ROAD, Great Falls, VA 22066
- **Phone:** (703) 757-7950
## 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:** Virginia Allergy PLLC (NPI 1689423915, Great Falls, VA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1811092414) · Data from the CMS NPPES public registry.