Alessa Sook Crossan, M.D.

Primary specialty

Retina Specialist (Ophthalmology) PhysicianTaxonomy code 207WX0107X

License

0101262608 Issued in VA

Practice address

45 N Hill Dr Ste 202
Warrenton, VA 20186-2677

Phone

(540) 349-1882

NPI assigned

Jun 12, 2011

Last updated

Apr 11, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in VA, DC2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Ophthalmology

Education

Albert Einstein College of Medicine of Yeshiva University, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Dulles Eye Associates, P.C.Group PAC ID 9638067150, 21 clinicians

Virginia Retina Center LLCGroup PAC ID 9335106814, 5 clinicians

James W Mattern OD, PLLCGroup PAC ID 6800262833, 6 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063
• Inova Fair Oaks Hospital Hospital, Fairfax, VA, CCN 490101

Merit-based Incentive Payment System (MIPS)

Final score

92.65 of 100Reported as apm

Quality

85.31

Promoting interoperability

100

Improvement activities

40

Merit-based Incentive Payment System (MIPS)

Final score

90.53 of 100Reported as group

Quality

92.86

Improvement activities

40

Cost

77.97

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Quality

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: acrossan@refocus.intellechartdirect.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Dulles Eye Associates, P.C.

  • Ophthalmology Physician
  • Lansdowne, VA
  • NPI 1144289661
  Medicare reassignment Care Compare group NPD
• James W Mattern OD, PLLC

  dba Capital Eye Consultants

  • Optometrist
  • Fairfax, VA
  • NPI 1376288597

  DC, Ophthalmology

  Medicare reassignment Care Compare group NPD
• Virginia Retina Center LLC

  • Ophthalmology Physician
  • Warrenton, VA
  • NPI 1093869976
  Medicare reassignment Care Compare group NPD
• Dulles Eye Associates, P.C.

  • Ophthalmology Physician
  • Annandale, VA
  • NPI 1528241965

  DC

  Medicare reassignment NPD
• Loudoun Medical Group, PC

  dba Urogynecology Center of Northern Virginia

  • Urogynecology and Reconstructive Pelvic Surgery (Urology) Physician
  • Reston, VA
  • NPI 1407908817

  DC

  Medicare reassignment NPD
• Loudoun Medical Group, PC

  dba Loudoun Medical Group, PC 'D'

  • Vascular Surgery Physician
  • Reston, VA
  • NPI 1588376321
  NPD
• Loudoun Medical Group, PC

  • Internal Medicine Physician
  • Leesburg, VA
  • NPI 1679591440
  NPD
• Refocus Eye Health of Central Connecticut, P.C.

  • Ophthalmology Physician
  • Waterbury, CT
  • NPI 1548874936
  NPD
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Inova Health Care Services

  dba Inova Fairfax Hospital

  • Rehabilitation Hospital Unit
  • Falls Church, VA
  • NPI 1588795462
  Care Compare affiliation
• Inova Health Care Services

  dba Inova Fair Oaks Hospital

  • General Acute Care Hospital
  • Fairfax, VA
  • NPI 1760513980
  Care Compare affiliation
• Inova Health Care Services

  dba Inova Fairfax Hospital

  • General Acute Care Hospital
  • Falls Church, VA
  • NPI 1831220714
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1307836800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744329600000",
    "number": "1477848034",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "45 N HILL DR STE 202",
            "city": "WARRENTON",
            "state": "VA",
            "postal_code": "201862677",
            "telephone_number": "540-349-1882",
            "fax_number": "703-738-7157"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "45 N HILL DR STE 202",
            "city": "WARRENTON",
            "state": "VA",
            "postal_code": "201862677",
            "telephone_number": "540-349-1882"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "21475 Ridgetop Circle Suite 300",
            "address_purpose": "LOCATION",
            "city": "Sterling",
            "state": "VA",
            "postal_code": "201668580",
            "country_code": "US",
            "telephone_number": "703-430-4400",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CROSSAN",
        "first_name": "ALESSA",
        "middle_name": "SOOK",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-06-12",
        "last_updated": "2025-04-11",
        "certification_date": "2025-04-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "WI",
            "license": "63863",
            "primary": false
        },
        {
            "code": "207WX0107X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Retina Specialist",
            "state": "DC",
            "license": "MD045246",
            "primary": false
        },
        {
            "code": "207WX0107X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Retina Specialist",
            "state": "VA",
            "license": "0101262608",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30016106580001",
            "state": "VA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Andria Lauren Corso
• Craniofacial Pain and Dental Sleep Center of Virginia PLLC
• Amy Elizabeth Crider, FNP-C
• Amy Crisp, R.D.
• Melissa A. Griffith Crooks
• Allison Grace Croushorn, AUD
• Gary Cubbage, CSFA
• Sergio Ivan Cueto, LMFT
• Nicole E Cuga, OTR
• Lauren Page Curtis, LPC

• Retina Specialist (Ophthalmology) Physician in Warrenton, VA
• Providers in Warrenton, VA by specialty
• Retina Specialist (Ophthalmology) Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.