Individual provider Active NPI

Tassy N. Hayden, M.D.

  • Family Medicine Physician
  • Saint Louis, MO
National Provider Identifier
1871889303
Registry record updated May 10, 2018
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
2014021718 Issued in MO
Practice address
2340 Hampton Ave
Saint Louis, MO 63139-2935
Phone
(314) 647-2200
Fax
(314) 647-4172
NPI assigned
Jun 23, 2011
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 10, 2018

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 248385 MA
Family Medicine Physician 207Q00000X 2014021718 MO Primary

Addresses

Primary practice location

2340 Hampton Ave
Saint Louis, MO 63139-2935

Mailing address

2340 Hampton Ave
Saint Louis, MO 63139-2935
Phone (314) 647-2200

Other practice location 1

405 Main St
Hillsboro, MO 63050-4351
Phone (636) 797-3737 ext. 104

Other identifiers 2

IdentifierTypeStateIssuer
1871889303MedicaidMO
2014021718OtherMOMO STATE LICENSE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MO, 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

Enrollment IDStateProvider typePAC IDDetails
I20141006000503 MO Practitioner - Family Practice 8022249192 Reassigns benefits to 2 organizations
I20250501001236 MA Practitioner - Family Practice 8022249192 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Washington University School of Medicine, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

10 Denniston PL
Womens Health
Northampton, MA 01060-2052
Phone (413) 586-9866

30 Locust St
Northampton, MA 01060-2052
Phone (413) 582-2441

Hospital & facility affiliations

  • Cooley Dickinson Hospital Inc,the Hospital, Northampton, MA, CCN 220015
  • Holyoke Medical Center Hospital, Holyoke, MA, CCN 220024

Merit-based Incentive Payment System (MIPS)

Final score
42.87 of 100Reported as group
Quality
31.86
Promoting interoperability
0
Improvement activities
40
Cost
61.04

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions1-10
Skin biopsy1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
248385MAMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cooley Dickinson Hospital Inc Current Accepting new patients
Mass General Brigham Medical Group Western Massachusetts Inc Family Medicine CurrentSince Jun 15, 2025 Accepting new patients
Total Access Urgent Care, PC Family Medicine CurrentSince May 7, 2021 Accepting new patients
Total Access Urgent Care, PC CurrentSince May 7, 2021 Accepting new patients
Compass Health, Inc PastSince Jul 28, 2018 Accepting new patients

Locations

30 Locust St
Northampton, MA 01060
Phone (413) 582-2000

399 Revolution Dr
Somerville, MA 02145
Phone (800) 856-1983

9556 Manchester Rd
Saint Louis, MO 63119
Phone (314) 373-5740

1717 Madison Ave
Washington, MO 63090
Phone (636) 244-6950

13861 Manchester Rd
Wildwood, MO 63011
Phone (636) 220-9333

Interoperability endpoints

  • Direct secure messaging: hayden.tassy.cdh@direct.partners.masshiway.net

Organizations & group practices 6

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1308787200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1525910400000",
    "number": "1871889303",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2340 HAMPTON AVE",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631392935",
            "telephone_number": "314-647-2200",
            "fax_number": "314-647-4172"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2340 HAMPTON AVE",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631392935",
            "telephone_number": "314-647-2200",
            "fax_number": "314-647-4172"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "405 Main St",
            "address_purpose": "LOCATION",
            "city": "Hillsboro",
            "state": "MO",
            "postal_code": "630504351",
            "country_code": "US",
            "telephone_number": "636-797-3737 x104",
            "fax_number": "636-797-4631",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAYDEN",
        "first_name": "TASSY",
        "middle_name": "N.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-06-23",
        "last_updated": "2018-05-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MA",
            "license": "248385",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MO",
            "license": "2014021718",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1871889303",
            "state": "MO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MO STATE LICENSE",
            "identifier": "2014021718",
            "state": "MO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Saint Louis, MO

Sources for this page

Verify at the official NPI Registry.