R David McCallum, MD

Primary specialty

Colon & Rectal Surgery PhysicianTaxonomy code 208C00000X

License

041494 Issued in CT

Practice address

346 Pomfret St
Putnam, CT 06260-1871

Phone

(860) 928-2552

Fax

(820) 928-0317

NPI assigned

Apr 28, 2006

Sex

Male

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 CT

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

General Surgery

Education

Southern Illinois University School of Medicine, 1988

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• Windham Community Memorial Hospital Hospital, Willimantic, CT, CCN 070021

Merit-based Incentive Payment System (MIPS)

Final score

90.42 of 100Reported as group

Quality

83.36

Promoting interoperability

100

Improvement activities

40

Cost

75.9

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: david.mccallum@xdr.hhchealthdirect.org
• FHIR API: https://api.platform.athenahealth.com/1694/brand/19/csg/48/fhir/r4

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.

• Day Kimball Medical Group Inc

  • Family Medicine Physician
  • Putnam, CT
  • NPI 1376813972

  Surgery

  Medicare reassignment NPD
• Rush Memorial Hospital

  • Rural Health Clinic/Center
  • Rushville, IN
  • NPI 1659935781
  NPD (past)

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

• Windham Community Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Willimantic, CT
  • NPI 1023191467
  Care Compare affiliation

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

{
    "created_epoch": "1146182400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1124085691",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "346 POMFRET ST",
            "city": "PUTNAM",
            "state": "CT",
            "postal_code": "062601871",
            "telephone_number": "860-928-2552",
            "fax_number": "820-928-0317"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "346 POMFRET ST",
            "city": "PUTNAM",
            "state": "CT",
            "postal_code": "062601871",
            "telephone_number": "860-928-2552",
            "fax_number": "820-928-0317"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCCALLUM",
        "first_name": "R",
        "middle_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CT",
            "license": "041494",
            "primary": false
        },
        {
            "code": "208C00000X",
            "taxonomy_group": "",
            "desc": "Colon & Rectal Surgery",
            "state": "CT",
            "license": "041494",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Victoria Rose Massey, DMD
• Gabriel Erick Mateo
• Krista E Matsen, MD
• Matulaitis Nursing Home, Inc.
• Xochitl Mauricio
• Kerri A McCaughey
• Nicholas James McCoy, LMT
• Christopher McDermott, MD
• Susan Marie McDevitt, PHARMD
• George McDonald

• Colon & Rectal Surgery Physician in Putnam, CT
• Providers in Putnam, CT by specialty
• Colon & Rectal Surgery Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.