Mark David Lorenze, M.D.

Primary specialty

Orthopaedic Surgery PhysicianTaxonomy code 207X00000X

License

36697 Issued in CT

Practice address

12 Bokum Rd
Essex, CT 06426-1500

Phone

(860) 767-9053

Fax

(860) 767-1146

NPI assigned

May 2, 2006

Last updated

May 12, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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 CT

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

Specialty

Orthopedic Surgery

Education

Tufts University School of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Connecticut Orthopaedic Specialists PCGroup PAC ID 7315850039, 184 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Middlesex Hospital Hospital, Middletown, CT, CCN 070020
• Gaylord Hospital Inc Long-term care hospital, Wallingford, CT, CCN 072003

Merit-based Incentive Payment System (MIPS)

Final score

87.81 of 100Reported as group

Quality

79.31

Promoting interoperability

100

Improvement activities

40

Cost

80.04

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mlorenze@ctortho.gwaydirect.com

All facility ownership & control disclosures 3

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 3

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• Middlesex Hospital

  dba Middlesex Hospital Homecare and Hospice

  • Community Based Hospice Care Agency
  • Middletown, CT
  • NPI 1003873233

  Corporate Director, Corporate Officer

  CMS ownership
• Middlesex Hospital

  dba Middlesex Hospital Homecare

  • Home Health Agency
  • Middletown, CT
  • NPI 1194781328

  Corporate Director, Corporate Officer

  CMS ownership
• Middlesex Hospital

  • General Acute Care Hospital
  • Middletown, CT
  • NPI 1760454334

  Corporate Officer

  CMS ownership

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.

• Connecticut Orthopaedic Specialists, PC

  • Orthopaedic Surgery Physician
  • Hamden, CT
  • NPI 1235181389
  Medicare reassignment Care Compare group NPD

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

• Gaylord Hospital, Inc.

  dba Gaylord Hospital

  • Long Term Care Hospital
  • Wallingford, CT
  • NPI 1730137753

  Long-term care hospital

  Care Compare affiliation
• Middlesex Hospital

  • General Acute Care Hospital
  • Middletown, CT
  • NPI 1760454334
  Care Compare affiliation

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

{
    "created_epoch": "1146528000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778544000000",
    "number": "1336107176",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2 BARNES INDUSTRIAL RD S",
            "city": "WALLINGFORD",
            "state": "CT",
            "postal_code": "064922486",
            "telephone_number": "203-626-0160",
            "fax_number": "203-294-6734"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12 BOKUM RD",
            "city": "ESSEX",
            "state": "CT",
            "postal_code": "064261500",
            "telephone_number": "860-767-9053",
            "fax_number": "860-767-1146"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "146 Samson Rock Dr",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "CT",
            "postal_code": "064433018",
            "country_code": "US",
            "telephone_number": "203-245-7447",
            "fax_number": "860-767-1146",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LORENZE",
        "first_name": "MARK",
        "middle_name": "DAVID",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-02",
        "last_updated": "2026-05-12",
        "certification_date": "2026-05-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CT",
            "license": "36697",
            "primary": true
        },
        {
            "code": "207XS0106X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Hand Surgery",
            "state": "CT",
            "license": "36697",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Karyn Anne Leipold, MSW LCSW CADC
• Gang Gary Lian, M,D., PH.D.
• Donna Libby
• Meredith Ann Lindner, DO
• Kerry Litke, LCSW
• Nancy Christine Ann Lucas, LCSW
• Daniel James Ludwig, PT
• Julianna Lusk, PT
• Steven Mitchell Luster, M.D.
• Virginia L Maher Wiese, MD

• Orthopaedic Surgery Physician in Essex, CT
• Providers in Essex, CT by specialty
• Orthopaedic Surgery Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 12, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; 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.