Cristin Razvan Opreanu, MD

Primary specialty

Colon & Rectal Surgery PhysicianTaxonomy code 208C00000X

License

4301093541 Issued in MI

Practice address

1627 Lake Lansing Rd Ste 100
Lansing, MI 48912-3788

Phone

(517) 372-0500

Fax

(517) 482-3220

NPI assigned

Dec 16, 2008

Sex

Male

Sole proprietor

Yes

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 MI

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: copreanu57628@direct.hfhs.org

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.

• Troy Gastroenterology PC

  • Gastroenterology Physician
  • Rochester Hills, MI
  • NPI 1134180318

  MI

  Medicare reassignment Care Compare group NPD
• Edward W Sparrow Hospital Association

  • Surgery Physician
  • Lansing, MI
  • NPI 1457744666

  MI

  Medicare reassignment Care Compare group
• Sparrow Eaton Hospital

  • Surgery Physician
  • Charlotte, MI
  • NPI 1336313022

  MI, Surgery

  Medicare reassignment NPD
• Edward W Sparrow Hospital Association

  • Multi-Specialty Clinic/Center
  • Lansing, MI
  • NPI 1023659802
  Care Compare group
• Edward W Sparrow Hospital Association

  • Internal Medicine Physician
  • Lansing, MI
  • NPI 1043562465
  Care Compare group
• Edward W Sparrow Hospital Association

  • General Acute Care Hospital
  • Lansing, MI
  • NPI 1073588711
  Care Compare group
• Edward W Sparrow Hospital Association

  • Urology Physician
  • Lansing, MI
  • NPI 1124502851
  Care Compare group
• Edward W Sparrow Hospital Association

  • Family Medicine Physician
  • East Lansing, MI
  • NPI 1124654793
  Care Compare group
• Edward W Sparrow Hospital Association

  • Family Medicine Physician
  • Holt, MI
  • NPI 1437400413
  Care Compare group
• Edward W Sparrow Hospital Association

  • Internal Medicine Physician
  • Lansing, MI
  • NPI 1487154290
  Care Compare group
• Edward W Sparrow Hospital Association

  • Vascular & Interventional Radiology Physician
  • Lansing, MI
  • NPI 1629517420
  Care Compare group
• Edward W. Sparrow Hospital Association

  • Clinical Social Worker
  • Lansing, MI
  • NPI 1033165790
  Care Compare group

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

• Edward W Sparrow Hospital Association

  • General Acute Care Hospital
  • Lansing, MI
  • NPI 1073588711

  Hospital

  Care Compare affiliation
• Edward W Sparrow Hospital Association

  • General Acute Care Hospital
  • Lansing, MI
  • NPI 1760710719

  Hospital

  Care Compare affiliation
• Sparrow Eaton Hospital

  • Orthopaedic Surgery Physician
  • Charlotte, MI
  • NPI 1043419427

  Hospital

  Care Compare affiliation
• Sparrow Eaton Hospital

  • Ambulance
  • Charlotte, MI
  • NPI 1093742249

  Hospital

  Care Compare affiliation
• Sparrow Eaton Hospital

  • Critical Access Hospital
  • Charlotte, MI
  • NPI 1942254529

  Hospital

  Care Compare affiliation

Specialty

General SurgeryAlso: Colorectal Surgery (Proctology)

Education

Other, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Troy Gastroenterology PC 47 clinicians

Edward W Sparrow Hospital Association 698 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Edward W Sparrow Hospital Hospital, Lansing, MI, CCN 230230
• University of Michigan Health - Sparrow Eaton Hospital, Charlotte, MI, CCN 231327

Procedures performed for Medicare patients

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

{
    "created_epoch": "1229385600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779926400000",
    "number": "1235375585",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1627 LAKE LANSING RD STE 100",
            "city": "LANSING",
            "state": "MI",
            "postal_code": "489123788",
            "telephone_number": "517-372-0500",
            "fax_number": "517-482-3220"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1627 LAKE LANSING RD STE 100",
            "city": "LANSING",
            "state": "MI",
            "postal_code": "489123788",
            "telephone_number": "517-372-0500",
            "fax_number": "517-482-3220"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OPREANU",
        "first_name": "CRISTIN",
        "middle_name": "RAZVAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2008-12-16",
        "last_updated": "2026-05-28",
        "certification_date": "2026-05-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MI",
            "license": "4301093541",
            "primary": false
        },
        {
            "code": "208C00000X",
            "taxonomy_group": "",
            "desc": "Colon & Rectal Surgery",
            "state": "MI",
            "license": "4301093541",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Open Arms Adult Senior Companionship Service
• Optical Management Sytems, Inc.
• Optimal Staffing Solutions Inc
• Optimal Staffing Solutions Inc.
• Optimum Peace Home Healthcare
• Option1 Home Health Care

• All providers in Lansing, MI
• Colon & Rectal Surgery Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 28, 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.