Active NPI
Mark Louis Messmer, D.O.
- Orthopaedic Surgery Physician
- Roxboro, NC
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- 2019-00888
- Practice address
- 799 Doctors CT
Roxboro, NC 27573-4571 - Phone
- (919) 220-5255
- NPI assigned
- Apr 15, 2013
- Last updated
- Jun 2, 2025
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Orthopaedic Surgery Physician | 207X00000X | OS017505 | PA | |
| Orthopaedic Surgery Physician | 207X00000X | 2019-00888 | NC | Primary |
Addresses
Primary practice location
799 Doctors CT
Roxboro, NC 27573-4571
Mailing address
PO Box 5105
Belfast, ME 04915-5100
Phone (919) 220-5255
Other practice location 1
503 Ridge Rd
Roxboro, NC 27573-4627
Phone (336) 503-5757
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in PA, NC
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Orthopedic Surgery
- Education
- West Virginia School of Osteopathic Medicine, 2013
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
107 E McClanahan St
Oxford, NC 27565-2919
Phone (919) 692-1105
337 S Madison Blvd
Roxboro, NC 27573-5464
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Knee replacement | 13 |
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 13 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 2019-00888 | NC | MD | Orthopaedic Surgery Physician |
| OS017505 | PA | MD | Orthopaedic Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Wellspan Medical Group | Current | Accepting new patients | |
| Wellspan Medical Group | Current | Accepting new patients | |
| Emergeortho PA | Orthopaedic Surgery | Current | Accepting new patients |
| Wellspan Medical Group | Current | Accepting new patients | |
| Emergeortho PA | Current | Accepting new patients |
Locations
107 E McClanahan St
Oxford, NC 27565
Phone (919) 690-8588
799 Doctors Ct
Roxboro, NC 27573
Phone (336) 599-4079
912 Russell Dr
Lebanon, PA 17042
Phone (717) 272-7971
25 Monument Rd
Ste 270
York, PA 17403
Phone (717) 741-8250
Interoperability endpoints
- mark.messmer.1@20247.direct.athenahealth.com
- mark.messmer.1@847.direct.athenahealth.com
- mmessmer217173@wellspan.direct-ci.com
Organizations & group practices 6
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.
-
- Orthopaedic Surgery Physician
- Durham, NC
- NPI 1376592964
-
dba WellSpan Digestive Health
- Gastroenterology Physician
- York, PA
- NPI 1669770004
-
dba Roxboro Physical Therapy
- Physical Therapy Clinic/Center
- Roxboro, NC
- NPI 1033255492
-
- Durable Medical Equipment & Medical Supplies
- Eden, NC
- NPI 1841170222
-
dba WellSpan Pediatric Surgical Specialist
- Pediatric Surgery Physician
- York, PA
- NPI 1104799428
-
dba Wellspan Pediatric Hospitalists
- Pediatrics Physician
- York, PA
- NPI 1124104245
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Maria Parham Medical Center
- General Acute Care Hospital
- Henderson, NC
- NPI 1164707725
-
dba Maria Parham Franklin
- Psychiatric Hospital Unit
- Louisburg, NC
- NPI 1689166605
-
- General Acute Care Hospital
- Durham, NC
- NPI 1437221785
-
dba Sentara Halifax Regional Hospital
- General Acute Care Hospital
- South Boston, VA
- NPI 1588668842
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1365984000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1748822400000",
"number": "1508209073",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 5105",
"city": "BELFAST",
"state": "ME",
"postal_code": "049155100",
"telephone_number": "919-220-5255"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "799 DOCTORS CT",
"city": "ROXBORO",
"state": "NC",
"postal_code": "275734571",
"telephone_number": "919-220-5255"
}
],
"practiceLocations": [
{
"address_1": "503 Ridge Rd",
"address_purpose": "LOCATION",
"city": "Roxboro",
"state": "NC",
"postal_code": "275734627",
"country_code": "US",
"telephone_number": "336-503-5757",
"fax_number": "336-503-5757",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MESSMER",
"first_name": "MARK",
"middle_name": "LOUIS",
"name_prefix": "Dr.",
"credential": "D.O.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2013-04-15",
"last_updated": "2025-06-02",
"certification_date": "2025-06-02",
"status": "A"
},
"taxonomies": [
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "PA",
"license": "OS017505",
"primary": false
},
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "NC",
"license": "2019-00888",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Roxboro, NC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 2, 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.