Marlee Diana Thomas, DO

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

1022823 Issued in MA

Practice address

759 Chestnut St # S6538
Springfield, MA 01107-1619

Phone

(413) 794-3233

Fax

(413) 794-9060

NPI assigned

Mar 28, 2021

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 OH, MA2 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

Emergency Medicine

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Baystate Medical Practices IncGroup PAC ID 5991602971, 1,350 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

91.05 of 100Reported as group

Quality

84.85

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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 and National Provider Directory roles.

• Baystate Medical Practices, Inc

  • Emergency Medical Services (Emergency Medicine) Physician
  • Springfield, MA
  • NPI 1548205909
  Medicare reassignment Care Compare group NPD
• Emergency Medicine Specialists Inc

  • Emergency Medicine Physician
  • Kettering, OH
  • NPI 1588640791
  Medicare reassignment NPD
• Mid-Ohio Emergency Group, LLC

  • Emergency Medicine Physician
  • Mansfield, OH
  • NPI 1881164010
  Medicare reassignment NPD
• Emergency Medicine Specialists Inc

  • Emergency Medicine Physician
  • Troy, OH
  • NPI 1467918938
  NPD
• Emergency Medicine Specialists, Inc

  • Emergency Medicine Physician
  • Springfield, OH
  • NPI 1104572841
  NPD
• Emergency Medicine Specialists Inc

  • Emergency Medicine Physician
  • Miamisburg, OH
  • NPI 1366428575
  NPD (past)

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

{
    "created_epoch": "1616889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1437736014",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "280 CHESTNUT ST FL 2",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011991001",
            "telephone_number": "413-794-5700",
            "fax_number": "413-794-1629"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "759 CHESTNUT ST # S6538",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011071619",
            "telephone_number": "413-794-3233",
            "fax_number": "413-794-9060"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5100 W Broad St",
            "address_purpose": "LOCATION",
            "city": "Columbus",
            "state": "OH",
            "postal_code": "432281607",
            "country_code": "US",
            "telephone_number": "614-544-1000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "115 W Silver St",
            "address_purpose": "LOCATION",
            "city": "Westfield",
            "state": "MA",
            "postal_code": "010853678",
            "country_code": "US",
            "telephone_number": "413-571-0000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "THOMAS",
        "first_name": "MARLEE",
        "middle_name": "DIANA",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-28",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "OH",
            "license": "34.016548",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MA",
            "license": "1022823",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Deepu A Thomas, MD
• Leslie Cecile Thomas, MD
• Linie S Thomas, D.O.
• London Gabriel Thomas
• Mark Thomas
• Mike Joe Thomas
• Rodney B Thomas Jr., D.C.
• Sarah Bennett Thomas
• Tifffany Thomas
• Una Michelle Thomas, LPN

• Emergency Medicine Physician in Springfield, MA
• Providers in Springfield, MA by specialty
• Emergency Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 17, 2025; 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.