William M Chasanov II, D.O.

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

C7-0003733 Issued in DE

Practice address

1535 Savannah Rd
Lewes, DE 19958-1611

Phone

(302) 645-3232

Fax

(302) 645-3198

NPI assigned

Jun 4, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in DE

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 1

Specialty

Infectious DiseaseAlso: Internal Medicine

Education

Philadelphia College of Osteopathic Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Beebe Physician Network Inc.Group PAC ID 5496744864, 301 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Beebe Medical Center Hospital, Lewes, DE, CCN 080007

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: bchasanov19359@beebehealth.direct-ci.com

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• Beebe Medical Center, Inc.

  • General Acute Care Hospital
  • Lewes, DE
  • NPI 1821196486

  Corporate Director

  CMS ownership

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

• Beebe Physician Network Inc.

  • Internal Medicine Physician
  • Lewes, DE
  • NPI 1730133992

  DE, Internal Medicine

  Medicare reassignment Care Compare group NPD
• Christiana Care Health Services Inc

  • Hospitalist Physician
  • Newark, DE
  • NPI 1245474329

  DE, Internal Medicine

  Medicare reassignment NPD
• Christiana Care Health Services Inc

  • Family Medicine Physician
  • Wilmington, DE
  • NPI 1760811681

  DE, Internal Medicine

  Medicare reassignment NPD
• Christiana Care Health Services, Inc

  • Endocrinology, Diabetes & Metabolism Physician
  • Wilmington, DE
  • NPI 1770568107

  DE

  Medicare reassignment NPD
• Christiana Care Health Services, Inc

  • Family Medicine Physician
  • Hockessin, DE
  • NPI 1134104565

  Internal Medicine

  NPD
• State of Delaware-Stockley

  • Intellectual Disabilities Intermediate Care Facility
  • Georgetown, DE
  • NPI 1962557561
  NPD
• Christiana Care Health Services Inc

  • Neurology Physician
  • Chadds Ford, PA
  • NPI 1881228484
  NPD

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

• Beebe Medical Center, Inc.

  • General Acute Care Hospital
  • Lewes, DE
  • NPI 1821196486

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1180915200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770595200000",
    "number": "1104028919",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1515 SAVANNAH RD",
            "city": "LEWES",
            "state": "DE",
            "postal_code": "199581675",
            "telephone_number": "302-645-3499",
            "fax_number": "302-644-4830"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1535 SAVANNAH RD",
            "city": "LEWES",
            "state": "DE",
            "postal_code": "199581611",
            "telephone_number": "302-645-3232",
            "fax_number": "302-645-3198"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3 Cooper Plz Rm 513",
            "address_purpose": "LOCATION",
            "city": "Camden",
            "state": "NJ",
            "postal_code": "081031499",
            "country_code": "US",
            "telephone_number": "856-963-3715",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "424 Savannah Rd",
            "address_purpose": "LOCATION",
            "city": "Lewes",
            "state": "DE",
            "postal_code": "199581462",
            "country_code": "US",
            "telephone_number": "302-645-3232",
            "fax_number": "888-987-4578",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Cooper Plz",
            "address_purpose": "LOCATION",
            "city": "Camden",
            "state": "NJ",
            "postal_code": "08103",
            "country_code": "US",
            "telephone_number": "856-963-3518",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHASANOV",
        "first_name": "WILLIAM",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "name_suffix": "II",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-04",
        "last_updated": "2026-02-09",
        "certification_date": "2026-02-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "DE",
            "license": "C7-0003733",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "DE",
            "license": "C7-0003773",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "NJ",
            "license": "25MB09331000",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Donna Chaplinski, RN
• Charlene Jenkins
• Chloe Elizabeth Charlsen, RN
• Chas Medicine LLC
• Caryn Brown Chasanov, FNP-BC
• Jennifer Cheadle
• Jesse Chen
• Childs Play by the Bay
• Chiropractic Sports Delaware
• Linda Choy, M.D.

• Infectious Disease Physician in Lewes, DE
• Providers in Lewes, DE by specialty
• Infectious Disease Physician in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; 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.