Robert Ara Petrossian, MD

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

2023045072 Issued in MO

Practice address

54 Hospital Dr
Osage Beach, MO 65065-3050

Phone

(573) 348-8000

NPI assigned

Jun 12, 2017

Last updated

Oct 1, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

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

Urology

Education

Oakland Univ, William Beaumont School of Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Urology of St Louis IncGroup PAC ID 6204723786, 112 clinicians

Osf Multi-Specialty GroupGroup PAC ID 3678889789, 2,123 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• HSHS St Elizabeth's Hospital Hospital, O Fallon, IL, CCN 140187
• Anderson Hospital Hospital, Maryville, IL, CCN 140289
• Osf Saint Anthony's Health Center Hospital, Alton, IL, CCN 140052
• St Josephs Hospital Hospital, Breese, IL, CCN 140145
• St Lukes Hospital Hospital, Chesterfield, MO, CCN 260179

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: robert.petrossian@490083655483396.direct.elationemr.com
• Direct secure messaging: robertpetrossian@slus.allscriptsdirect.net
• Direct secure messaging: rpetrossian742183@direct.memorialcare.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.

• Urology of St. Louis, Inc.

  dba Neurosurgery of St Louis

  • Specialist
  • Saint Louis, MO
  • NPI 1528017191

  IL, Urology

  Medicare reassignment Care Compare group NPD
• Osf Multi-Specialty Group

  • Internal Medicine Physician
  • Peoria, IL
  • NPI 1922445527
  Medicare reassignment Care Compare group NPD
• Associates in Urology a Medical Corporation

  • Urology Physician
  • Los Alamitos, CA
  • NPI 1841202074
  NPD
• Central PA Pharmacy LLC.

  dba patton pharmacy and v&s variety

  • Community/Retail Pharmacy
  • Patton, PA
  • NPI 1578541413
  NPD
• Urology of St. Louis, Inc.

  dba Neurosurgery of St Louis

  • Specialist
  • O'Fallon, IL
  • NPI 1265392476
  NPD
• Urology of St. Louis, Inc.

  • Urology Physician
  • Fairview Heights, IL
  • NPI 1528901287
  NPD (past)

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

• St. Lukes Episcopal-Presbyterian Hospital

  dba St. Luke's Hospital

  • General Acute Care Hospital
  • Chesterfield, MO
  • NPI 1346251543
  Care Compare affiliation
• Anderson Hospital

  • General Acute Care Hospital
  • Maryville, IL
  • NPI 1053481630
  Care Compare affiliation
• Osf Healthcare System

  dba Osf Saint Anthony's Health Center

  • General Acute Care Hospital
  • Alton, IL
  • NPI 1710396932
  Care Compare affiliation
• St Elizabeths Hospital of the Hospital Sisters of the Third Order

  dba HSHS St. Elizabeth's Hospital

  • General Acute Care Hospital
  • O'Fallon, IL
  • NPI 1629057302
  Care Compare affiliation
• St Josephs Hospital Breese of the Hospital Sisters of the Third Orde

  dba Clinton County Rural Health

  • Rural Health Clinic/Center
  • Breese, IL
  • NPI 1013002658

  Hospital

  Care Compare affiliation
• St Josephs Hospital Breese of the Hospital Sisters of the Third Orde

  dba St. Joseph's Hospital

  • General Acute Care Hospital
  • Breese, IL
  • NPI 1457319154
  Care Compare affiliation

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

{
    "created_epoch": "1497225600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790812800000",
    "number": "1912436015",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2307 S 9TH ST",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631044220",
            "telephone_number": "818-445-3574"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "54 HOSPITAL DR",
            "city": "OSAGE BEACH",
            "state": "MO",
            "postal_code": "650653050",
            "telephone_number": "573-348-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "500 W Berkeley St",
            "address_purpose": "LOCATION",
            "city": "Uniontown",
            "state": "PA",
            "postal_code": "154015514",
            "country_code": "US",
            "telephone_number": "724-430-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1531 Esplanade",
            "address_purpose": "LOCATION",
            "city": "Chico",
            "state": "CA",
            "postal_code": "959263310",
            "country_code": "US",
            "telephone_number": "530-332-7300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PETROSSIAN",
        "first_name": "ROBERT",
        "middle_name": "ARA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2017-06-12",
        "last_updated": "2026-10-01",
        "certification_date": "2026-10-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "CA",
            "license": "A178626",
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "PA",
            "license": "MD497569",
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "MO",
            "license": "2023045072",
            "primary": true
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "IL",
            "license": "036-167643",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Chelsea Megan Pendleton, APRN
• Katharine Elise Percell, OT LIMITED
• Petersen Health Operations, LLC (Ozark Rehabilitation & Health Care)
• Justin Robert Peterson, PHARMD, RPH
• Howard A Peth Jr., M.D.
• Victor M. Phillips, M.D.
• Pike Chiropractic
• Pike Chiropractic LLC
• Amy S Pike, DC
• Charles H Pike III, DC

• Urology Physician in Osage Beach, MO
• Providers in Osage Beach, MO by specialty
• Urology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 1, 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.