Mark B Letterman, DC, OMD

Primary specialty

ChiropractorTaxonomy code 111N00000X

License

F1-0011109 Issued in DE

Practice address

70 Rehoboth Ave
Rehoboth Beach, DE 19971-2171

Phone

(302) 612-1077

NPI assigned

Jul 14, 2025

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1752451200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1285525543",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1803 SLAUGHTER STATION RD",
            "city": "HARTLY",
            "state": "DE",
            "postal_code": "199533222"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "70 REHOBOTH AVE",
            "city": "REHOBOTH BEACH",
            "state": "DE",
            "postal_code": "199712171",
            "telephone_number": "302-612-1077"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LETTERMAN",
        "first_name": "MARK",
        "middle_name": "B",
        "credential": "DC, OMD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-07-14",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "171100000X",
            "taxonomy_group": "",
            "desc": "Acupuncturist",
            "state": "DE",
            "license": "CT-0010019",
            "primary": false
        },
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "DE",
            "license": "F1-0011109",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kyle John Lambert, APRN, FNP-BC
• Amy Michelle Lane, APRN, PMHNP-BC
• Charlene Faye Larrimore, FNP
• Curtis James Leciejewski, D.D.S.
• Teresa Lesher, RN
• Leonard Lev, MD
• Lewes Spine Center LLC
• Rita Workman Lookup, RD
• Miriam J Lopez
• Wendy Weber Lowry, PMHNP

• Chiropractor in Rehoboth Beach, DE
• Providers in Rehoboth Beach, DE by specialty
• Chiropractor in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.