Active NPI
Mark Pfaff
- Orthopaedic Surgery Physician
- Elkton, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- H0-063647
- Practice address
- 160 Railroad Ave
Elkton, MD 21921-5538 - Phone
- (410) 996-8686
- Fax
- (410) 398-8997
- NPI assigned
- May 31, 2005
- Last updated
- Jan 12, 2026
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Orthopaedic Surgery Physician | 207X00000X | H0-063647 | MD | Primary |
Addresses
Primary practice location
160 Railroad Ave
Elkton, MD 21921-5538
Mailing address
160 Railroad Ave
Elkton, MD 21921-5538
Phone (410) 996-8686
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MD
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Orthopedic Surgery
- Education
- Philadelphia College of Osteopathic Medicine, 1998
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
160 Railroad Ave
Elkton, MD 21921-5538
Phone (410) 996-8686
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 90.27 of 100
- Quality
- 95.01
- Improvement activities
- 40
- Cost
- 62.34
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Hip replacement | 13 |
| Knee replacement | 33 |
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy, Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| H0-063647 | MD | MD | Orthopaedic Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Chesapeake Bone and Joint Center, LLC | Orthopaedic Surgery | Current | Accepting new patients |
Locations
160 Railroad Ave
Elkton, MD 21921
Phone (302) 999-8511
Organizations & group practices 1
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
- Elkton, MD
- NPI 1104949254
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Elkton, MD
- NPI 1376523357
-
dba Christiana Care
- General Acute Care Hospital
- Wilmington, DE
- NPI 1134194038
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1117497600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1768176000000",
"number": "1194728469",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "160 RAILROAD AVE",
"city": "ELKTON",
"state": "MD",
"postal_code": "219215538",
"telephone_number": "410-996-8686",
"fax_number": "410-398-8997"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "160 RAILROAD AVE",
"city": "ELKTON",
"state": "MD",
"postal_code": "219215538",
"telephone_number": "410-996-8686",
"fax_number": "410-398-8997"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PFAFF",
"first_name": "MARK",
"name_prefix": "Dr.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-05-31",
"last_updated": "2026-01-12",
"certification_date": "2026-01-12",
"status": "A"
},
"taxonomies": [
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "MD",
"license": "H0-063647",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Elkton, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 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; 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.