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ALLISON RIVERA-GUERNSEY PSY.D
NPI 1275736043
Psychologist - Clinical in Alexandria, VA

Active since June 07, 2007PECOS Enrolled
4850 MARK CENTER DR, ALEXANDRIA, VA 22311(703) 746-3400 Get Directions Write a Review

NPPES record last updated: June 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Allison Rivera-guernsey Psy.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALLISON RIVERA-GUERNSEY PSY.D (NPI 1275736043) is an individual clinical provider in Alexandria, Virginia, licensed in Virginia (0810004446) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275736043
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameALLISON RIVERA-GUERNSEYCredential: PSY.D
Location Address4850 MARK CENTER DRAlexandria, VA 22311-1882
Mailing Address4850 Mark Center DrAlexandria, VA 22311-1882 · (703) 746-3400
Phone(703) 746-3400
Sole ProprietorNo
Enumeration DateJune 7, 2007
Last NPPES UpdateJune 13, 2024
NPPES CertifiedJune 13, 2024
✔ NPI 1275736043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in VA · 0810004446
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
4850 MARK CENTER DR, Alexandria, VA 22311
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Allison Rivera-guernsey Psy.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Allison Rivera-guernsey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Alexandria
Same address
Mental Health (Including Community Mental Health Center)
4850 MARK CENTER DR
Alexandria, VA 22311
  • Reassigned Medicare billing, District of Columbia enrollment
  • 63 clinicians in this Medicare group
NPI 1447279658 (703) 746-3400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22311 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

STEVEN E FRUTOS LCSW
Social Worker (Clinical)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
MRS. ANJA D. BLACKADAR LCSW
Social Worker (Clinical)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
SAMUEL OWUSU
Registered Nurse
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
JONATHAN TEUMER LCSW
Social Worker (Clinical)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
PHENORIES MASSENBURG
Registered Nurse
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
JUANA OSORIO RAMIREZ
Psychologist (Clinical)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
DR. ANJULI SARA JINDAL M.D.
Psychiatry & Neurology (Psychiatry)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400
NINA N ISKANDER LPC
Counselor (Professional)
4850 MARK CENTER DR
ALEXANDRIA, VA 22311
Alexandria City (703) 746-3400

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 Allison Rivera-guernsey's NPI number?

The NPI number for Allison Rivera-guernsey is 1275736043. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Where is Allison Rivera-guernsey located?

Allison Rivera-guernsey practices at 4850 Mark Center Dr, Alexandria, VA 22311. The listed phone number is (703) 746-3400.

What is Allison Rivera-guernsey's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Allison Rivera-guernsey enrolled in Medicare?

Yes. Allison Rivera-guernsey is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Allison Rivera-guernsey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Rivera-guernsey reassigns Medicare benefits to City Of Alexandria (Alexandria, 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 Allison Rivera-guernsey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Allison Rivera-guernsey accept?

Health plans from Oscar Health list Allison Rivera-guernsey 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 Allison Rivera-guernsey was last updated on June 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.