Mary-Anne Ost MD LTD

Primary specialty

Geriatric Medicine (Family Medicine) PhysicianTaxonomy code 207QG0300X

Legal business name

MARY-ANNE OST MD LTD

Practice address

1 Commerce Blvd
Suite 203
West Grove, PA 19390-9198

Phone

(610) 869-0311

Fax

(610) 869-0333

NPI assigned

May 4, 2006

Organization subpart

No

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

Authorized official

Name

Mary-Anne Ost, M.D.NPI 1740249697

Title

President

Phone

(610) 869-0311

Specialties & licenses 1

Addresses

Other identifiers 3

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Interoperability endpoints

• Direct secure messaging: mary-anne.ost.1@11172.direct.athenahealth.com

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Mary-Anne Ost, M.D.

  • Geriatric Medicine (Family Medicine) Physician
  • West Grove, PA
  • NPI 1740249697
  Medicare reassignment NPD Authorized official
• Seth S Haplea, M.D.

  • Neurology Physician
  • Kennett Square, PA
  • NPI 1467408906
  NPD (past)
• Joshua N Aaron, MD

  • Pulmonary Disease Physician
  • Elkton, MD
  • NPI 1396703351
  NPD (past)

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

{
    "created_epoch": "1146700800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1755561600000",
    "number": "1477501559",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 COMMERCE BLVD",
            "address_2": "SUITE 203",
            "city": "WEST GROVE",
            "state": "PA",
            "postal_code": "193909198",
            "telephone_number": "610-869-0311",
            "fax_number": "610-869-0333"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 COMMERCE BLVD",
            "address_2": "SUITE 203",
            "city": "WEST GROVE",
            "state": "PA",
            "postal_code": "193909198",
            "telephone_number": "610-869-0311",
            "fax_number": "610-869-0333"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARY-ANNE OST MD LTD",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-05-04",
        "last_updated": "2025-08-19",
        "certification_date": "2025-08-19",
        "status": "A",
        "authorized_official_last_name": "OST",
        "authorized_official_first_name": "MARY-ANNE",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "610-869-0311",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207QG0300X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Family Medicine, Geriatric Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "1190896",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "4076312",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PERSONAL CHOICE",
            "identifier": "002823997",
            "state": null
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mary-anne.ost.1@11172.direct.athenahealth.com",
            "affiliation": "N",
            "address_1": "1 Commerce Blvd",
            "address_2": "Suite 203",
            "city": "West Grove",
            "state": "PA",
            "country_code": "US",
            "postal_code": "193909198",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jason A. Malavolta, P.T.
• Leigh A Manning-Smith, PT
• Elaine Markowitz, LPC
• Allison Marsala
• David Martens Jr., DPT
• Suby Mathew, CRNP
• Dana Theresa Mazzetti, RBT
• Laura Elizabeth McCavera, DO
• Jennifer McDonald, MD
• Christine Marie McKeon, CRNP

• Geriatric Medicine (Family Medicine) Physician in West Grove, PA
• Providers in West Grove, PA by specialty
• Geriatric Medicine (Family Medicine) Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.