ALESSA SOOK CROSSAN M.D.
NPI 1477848034
Ophthalmology - Retina Specialist in Warrenton, VA

Active since June 12, 2011PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
45 N HILL DR STE 202, WARRENTON, VA 20186(540) 349-1882 Get Directions Write a Review

NPPES record last updated: April 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 11, 2025, Jul 21, 2022, Mar 17, 2018 and 2 more (5 updates tracked since 2017).

About Alessa Sook Crossan M.d. NPPES

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

ALESSA SOOK CROSSAN M.D. (NPI 1477848034) is an individual retina specialist in Warrenton, Virginia, licensed in Virginia (0101262608) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, is affiliated with Inova Fairfax Hospital, and maintains a secondary practice location in Sterling.

NPPES Registry Identity

NPI1477848034
Entity TypeIndividualFemale
Primary Taxonomy207WX0107X
Provider Legal NameALESSA SOOK CROSSANCredential: M.D.
Location Address45 N HILL DR STE 202Warrenton, VA 20186-2677
Mailing Address45 N Hill Dr Ste 202Warrenton, VA 20186-2677 · (540) 349-1882 · Fax (703) 738-7157
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 2011
Enumeration DateJune 12, 2011
Last NPPES UpdateApril 11, 20255 updates tracked since enumeration
NPPES CertifiedApril 11, 2025
NPI 1477848034 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0107X
Licenses Licensed in VA · 0101262608 Licensed in DC · MD045246
Definition
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.
Also ListedOphthalmologyTaxonomy 207W00000X · License 63863 (WI)
45 N HILL DR STE 202, Warrenton, VA 20186

Secondary Practice Location 1

Location 121475 Ridgetop Circle Suite 300Sterling, VA 20166-8580 · Phone (703) 430-4400

Other Identifiers 1

Medicaid30016106580001VA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Alessa Sook Crossan 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.

PECOS PAC ID5799096780
PECOS Enrollment IDI20170724002099, I20170801000351
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.

Areas of Expertise CMS Part B claims 11

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.

Injection, faricimab-svoa, 0.1 mg J2777
Faricimab-svoa is a medication given through an injection into the eye to treat certain eye conditions. The 0.1 mg dosage helps control disease progression, improving vision and eye health. The procedure is done by a healthcare professional.
3,660 services20 patients
Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
903 services408 patients
Injection, aflibercept, 1 mg J0178
Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.
444 services72 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
424 services283 patients
Injection of drug into eye 67028
An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.
397 services116 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
213 services192 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Fairfax Hospital

Acute Care Hospitals · Falls Church, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490063
Location3300 Gallows RoadFalls Church, VA 22042 · Fairfax County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20186 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
$129.04 typical visit price
range $56.19 – $170.30
Typical copayment $32.26 (range $14.04 – $42.57)
Most-billed visit code 99204
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Ophthalmology
45 N HILL DR STE 202
WARRENTON, VA 20186
Ophthalmology
45 N HILL DR STE 202
WARRENTON, VA 20186
Ophthalmology (Retina Specialist)
45 N HILL DR STE 202
WARRENTON, VA 20186
Ophthalmology
45 N HILL DR STE 202
WARRENTON, VA 20186
Nurse Practitioner (Family)
45 N HILL DR STE 202
WARRENTON, VA 20186
Ophthalmology
45 N HILL DR STE 202
WARRENTON, VA 20186

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 Alessa Crossan's NPI number?

The NPI number for Alessa Crossan is 1477848034. It was assigned to this individual provider in the NPPES registry on June 12, 2011.

Where is Alessa Crossan located?

Alessa Crossan practices at 45 N Hill Dr Ste 202, Warrenton, VA 20186. The listed phone number is (540) 349-1882.

What is Alessa Crossan's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

Is Alessa Crossan enrolled in Medicare?

Yes. Alessa Crossan 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.

Is Alessa Crossan affiliated with any hospitals?

According to CMS data, Alessa Crossan is affiliated with Inova Fairfax Hospital.

When was this NPI record last updated?

The NPPES record for Alessa Crossan was last updated on April 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.