Alessa Sook Crossan, M.D.
Retina Specialist (Ophthalmology) Physician · Warrenton, VA
Alessa Sook Crossan, M.D. is a retina specialist (ophthalmology) physician with a practice address in Warrenton, Virginia, and NPI 1477848034, issued on Jun 12, 2011. Check the license (Virginia 0101262608, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Alessa Sook Crossan
- Credential
- M.D.
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License numbers
- 0101262608 VA
MD045246 DC
63863 WI
Self-reported in NPPES; status is on the state search - Practice location
- 45 N Hill Dr Ste 202, Warrenton, VA 20186
- Phone
- (540) 349-1882
- Enumerated
- Jun 12, 2011
- Record last updated
- Apr 11, 2025
- Medicaid ID
- 30016106580001 VA
- Medicare enrollment
- Enrolled (PECOS I20170801000351); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2011
- Entity
- Type 1 · individual
Also registered at 45 N Hill Dr Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexandre Gauthier, M.DOphthalmology Physician1710206057
- Sam Mansour, MDOphthalmology Physician1376506873
- Marena Patronas, M.D.Ophthalmology Physician1992928352
- Malkit Singh, MD MPARetina Specialist (Ophthalmology) Physician1497175681
- Sheila Wetherell, FNPFamily Nurse Practitioner1821337932
Verify Alessa Sook Crossan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101262608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
333 Medicare Part D claims for 91 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost52 claims
- Prednisolone Acetate42 claims
- Ofloxacin28 claims
- Dorzolamide-Timolol27 claims
- Timolol Maleate21 claims
- Brimonidine Tartrate20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $155.22
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,253 providers of this specialty with any payment received $7,667.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- Dulles Eye Associates, P.C.Alexandria, VA
- James W Mattern OD, PLLCFairfax, VA
- Loudoun Medical Group, PCAlexandria, VA
- Virginia Retina Center LLCLeesburg, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Virginia
There are 45 retina specialist (ophthalmology) physician records in Virginia.
Other retina specialist (ophthalmology) physician records in Virginia
- Jon Adleberg, M.D.Chesapeake, VA1710981246
- Mohammed Barazi, M.D.Sterling, VA1447223888
- Evan BergerNorfolk, VA1356769731
- Gordon Byrnes, M.D.Alexandria, VA1295709699
- Timothy Byrnes, MDRoanoke, VA1245234715
- John Carter, M.D.Winchester, VA1750353140
- Apoorv Chebolu, MDFalls Church, VA1306341771
- Dal Chun, MDVienna, VA1578587135
- Michael Cusick, MD, MHSACharlottesville, VA1275670291
- Kori Elkins, M.D.Portsmouth, VA1265691141
Common questions
What is Alessa Sook Crossan, M.D.'s NPI number?
Alessa Sook Crossan, M.D.'s National Provider Identifier (NPI) is 1477848034, issued on Jun 12, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Alessa Sook Crossan, M.D. located?
The NPPES record lists a practice address at 45 N Hill Dr Ste 202, Warrenton, VA, 20186. Phone: (540) 349-1882. Providers update this record themselves, so call before visiting.
How can I verify Alessa Sook Crossan, M.D.'s license?
NPPES lists Virginia license number 0101262608, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alessa Sook Crossan, M.D. prescribe under Medicare Part D?
In 2024, Alessa Sook Crossan, M.D. had 333 Medicare Part D claims for 91 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Alessa Sook Crossan, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.