Katherine Mae Massa, MD

Primary specialty

Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X

License

2017013416 Issued in MO

Practice address

4901 Forest Park Ave
Div OBGYN MFM and US, Ste 710
Saint Louis, MO 63108-1495

Phone

(314) 454-8181

Fax

(314) 747-1429

NPI assigned

May 16, 2013

Last updated

Apr 17, 2025By 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 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO, IL2 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

Obstetrics/Gynecology

Education

Temple University School of Medicine, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Washington University Physicians in Illinois IncGroup PAC ID 4789945163, 168 clinicians

Miracl LLCGroup PAC ID 4587908041, 96 clinicians

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032
• Phelps County Regional Medical Center Hospital, Rolla, MO, CCN 260017

Merit-based Incentive Payment System (MIPS)

Final score

88.01 of 100Reported as group

Quality

76.14

Promoting interoperability

99

Improvement activities

40

Cost

76.43

Merit-based Incentive Payment System (MIPS)

Final score

84.2 of 100Reported as group

Quality

71.6

Promoting interoperability

100

Improvement activities

40

Cost

75.75

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
• Direct secure messaging: kmassa1221124@direct.carenet.org

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.

• Miracl, LLC

  • Multi-Specialty Clinic/Center
  • Rolla, MO
  • NPI 1205304300
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1760422265

  Obstetrics & Gynecology

  Medicare reassignment Care Compare group NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • O'Fallon, IL
  • NPI 1477076263
  Medicare reassignment Care Compare group NPD
• Washington University Physicians in Illinois Inc

  • Diagnostic Radiology Physician
  • Alton, IL
  • NPI 1336037076

  MO

  Medicare reassignment
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1457203135
  NPD
• Washington University Physicians in Illinois, Inc.

  • Multi-Specialty Clinic/Center
  • Shiloh, IL
  • NPI 1700374105
  NPD
• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  NPD (past)
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1134169568
  NPD (past)

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

• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation
• Phelps County Regional Medical Center

  dba Phelps Health Medical Group

  • Rural Health Clinic/Center
  • Salem, MO
  • NPI 1194077701

  Hospital

  Care Compare affiliation
• Phelps County Regional Medical Center

  dba Phelps Health

  • Rehabilitation Hospital Unit
  • Rolla, MO
  • NPI 1346287455
  Care Compare affiliation
• Phelps County Regional Medical Center

  dba Phelps Health

  • General Acute Care Hospital
  • Rolla, MO
  • NPI 1891766051
  Care Compare affiliation

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

{
    "created_epoch": "1368662400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1205272341",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-454-8181",
            "fax_number": "314-747-1429"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4901 FOREST PARK AVE",
            "address_2": "DIV OBGYN MFM AND US, STE 710",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631081495",
            "telephone_number": "314-454-8181",
            "fax_number": "314-747-1429"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSA",
        "first_name": "KATHERINE",
        "middle_name": "MAE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-05-16",
        "last_updated": "2025-04-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "MO",
            "license": "2017013416",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200029660",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "4901 Forest Park Ave",
            "address_2": "Div OBGYN MFM and US, Ste 710",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631081495",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jonna Mason, LCSW
• Mary V Mason, MD
• Susan Mason, PCNS
• Manar Y Masood, AA
• Muhammad Faraz Masood, MD
• Sean Timothy Massa, MD
• Katina Massad
• Leslie Stewart Massad, MD
• Reyanna G Massaquoi, MD
• Emily M Massaro, P.A.

• Maternal & Fetal Medicine Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Maternal & Fetal Medicine Physician in Missouri

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