NPIMap

Individual provider Active NPI

Cristin Razvan Opreanu, MD

  • Colon & Rectal Surgery Physician
  • Lansing, MI
National Provider Identifier
1235375585
Registry record updated May 28, 2026
On this page

Key facts

NPPES NPI Registry
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
Last updated
May 28, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 28, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X 4301093541 MI
Colon & Rectal Surgery Physician 208C00000X 4301093541 MI Primary

Addresses

Primary practice location

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

Mailing address

1627 Lake Lansing Rd Ste 100
Lansing, MI 48912-3788
Phone (517) 372-0500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20160413001677 MI Practitioner - General SurgeryPractitioner - Colorectal Surgery (Proctology) 0840598553 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
General SurgeryAlso: Colorectal Surgery (Proctology)
Education
Other, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Troy Gastroenterology PCGroup PAC ID 9739143991, 47 clinicians

Practice addresses (Care Compare)

1627 Lake Lansing Rd
Suite 100
Lansing, MI 48912-3788
Phone (517) 332-1200

1650 Ramblewood Dr
Suite 100
East Lansing, MI 48823-7396
Phone (517) 332-1200

2909 E Grand River Ave
Suite 102
Lansing, MI 48912-4335
Phone (517) 364-5388

321 E Harris St
Charlotte, MI 48813-1629
Phone (517) 332-1200

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy48
Removal of skin lesions1-10

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Sparrow Eaton Hospital CurrentSince Dec 1, 2025 Accepting new patients
Troy Gastroenterology PC Current Accepting new patients
Sparrow Eaton Hospital Surgery CurrentSince Dec 1, 2025 Accepting new patients
Troy Gastroenterology, PC Current Accepting new patients
Edward W. Sparrow Hospital Association Past Accepting new patients
Pinnacle Anesthesia PLLC Past Accepting new patients

Locations

8175 Reliable Pkwy
Chicago, IL 60686

111 Lansing St
Charlotte, MI 48813
Phone (517) 543-4182

111 Lansing St
Ste 220
Charlotte, MI 48813
Phone (517) 543-9563

321 E Harris St
Charlotte, MI 48813
Phone (517) 541-5840

1650 Ramblewood Dr
Ste 100
East Lansing, MI 48823

1210 W Saginaw St
Lansing, MI 48915
Phone (517) 364-7180

1701 South Blvd E
Ste 300
Rochester Hills, MI 48307
Phone (248) 844-9710

50438 Van Dyke Ave
Shelby Township, MI 48317
Phone (586) 726-8423

Interoperability endpoints

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

Organizations & group practices 8

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.

Hospital & facility affiliations 5

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": "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": []
}

Other providers in Lansing, MI

Sources for this page

Verify at the official NPI Registry.