Margaret A Oppenheimer, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MD151425 Issued in OR

Practice address

709 W Orchard Dr
Suite 4
Bellingham, WA 98225-1766

Phone

(360) 318-8800

Fax

(360) 318-1085

NPI assigned

Aug 6, 2007

Last updated

Apr 27, 2026By 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in WA, MO2 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

Internal Medicine

Education

University of Missouri, Columbia School of Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

St Anthonys Physician Organization Hospitalist Services LCGroup PAC ID 5092980656, 140 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Hospital South Hospital, Saint Louis, MO, CCN 260077

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• St Anthonys Physician Organization Hospitalist Services, L.C.

  dba Mercy Clinic South Hospitalists

  • Hospitalist Physician
  • Saint Louis, MO
  • NPI 1407216336
  Medicare reassignment Care Compare group
• Family Care Network PLLC

  • Family Medicine Physician
  • Bellingham, WA
  • NPI 1427001015
  Medicare reassignment NPD
• Family Care Network PLLC

  dba Sunset and James

  • Family Medicine Physician
  • Bellingham, WA
  • NPI 1558952150
  NPD
• Family Care Network PLLC

  dba Lynden Family Medicine

  • Family Medicine Physician
  • Lynden, WA
  • NPI 1811932189
  NPD
• Mid-Columbia Medical Center

  dba Adventist Health Columbia Gorge

  • Rural Health Clinic/Center
  • The Dalles, OR
  • NPI 1154351336
  NPD (past)

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

• Mercy Hospital South

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1568481984
  Care Compare affiliation

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

{
    "created_epoch": "1186358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777248000000",
    "number": "1598956419",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "709 W ORCHARD DR STE 4",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982251766",
            "telephone_number": "360-318-8800",
            "fax_number": "360-318-1085"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "709 W ORCHARD DR",
            "address_2": "SUITE 4",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982251766",
            "telephone_number": "360-318-8800",
            "fax_number": "360-318-1085"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "10010 Kennerly Rd",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631282106",
            "country_code": "US",
            "telephone_number": "314-525-1328",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OPPENHEIMER",
        "first_name": "MARGARET",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-08-06",
        "last_updated": "2026-04-27",
        "certification_date": "2026-04-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD151425",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2026011662",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• One Body Massage and Restoration
• Brittany N Oneal
• Onward Bellingham
• Jason Jacob Oost, M.D.
• Kathryn Oost, PHD
• Optum Care Washington PLLC
• Jennifer Rose Oram
• Robert C Oram, MD
• Sarah Michelle Orler
• Gregory Anne Ormsby, LMT

• Internal Medicine Physician in Bellingham, WA
• Providers in Bellingham, WA by specialty
• Internal Medicine Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 27, 2026; 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.