Mark D Niehaus, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

0101234414 Issued in VA

Practice address

416 Albemarle SQ
Charlottesville, VA 22901-7400

Phone

(434) 422-1919

Fax

(434) 402-4510

NPI assigned

Jun 3, 2006

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 VA

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

Internal MedicineAlso: Pediatric Medicine

Education

Warren Alpert Medical School of Brown University, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Martha Jefferson Medical Group LLCGroup PAC ID 5991889081, 197 clinicians

Privia Medical Group, LLCGroup PAC ID 4385682061, 1,522 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Continuum Home Health Care Home health agency, Charlottesville, VA, CCN 497490
• Sentara Home Care Services Home health agency, Charlottesville, VA, CCN 497019
• Sentara Martha Jefferson Hospital Hospital, Charlottesville, VA, CCN 490077
• University of Virginia Medical Center Hospital, Charlottesville, VA, CCN 490009
• Sentara RMH Medical Center Hospital, Harrisonburg, VA, CCN 490004

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/8042/brand/1/csg/1/fhir/r4
• Direct secure messaging: admin@albemarlesquare.e-mdsdirect.com
• Direct secure messaging: mniehaus256292@direct.sentara.net
• Direct secure messaging: mark.niehaus.1@8042.direct.athenahealth.com

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.

• Martha Jefferson Medical Group LLC

  • Family Medicine Physician
  • Charlottesville, VA
  • NPI 1275720559

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Privia Medical Group, LLC

  • Internal Medicine Physician
  • Arlington, VA
  • NPI 1013042480
  Medicare reassignment Care Compare group NPD
• Privia Medical Group, LLC

  • Pain Medicine (Psychiatry & Neurology) Physician
  • Rockville, MD
  • NPI 1811715436
  NPD
• Martha Jefferson Hospital

  • Endoscopy Clinic/Center
  • Charlottesville, VA
  • NPI 1942189022
  NPD (past)
• Nova Physician Wellness Center PLLC

  • Family Medicine Physician
  • Fairfax, VA
  • NPI 1215307400
  NPD (past)

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

• Sentara Enterprises

  • Home Health Agency
  • Charlottesville, VA
  • NPI 1255315503
  Care Compare affiliation Name & address match
• Martha Jefferson Hospital

  • General Acute Care Hospital
  • Charlottesville, VA
  • NPI 1346248663
  Care Compare affiliation
• Rector & Visitors of the University of Virginia

  • Home Health Agency
  • Charlottesville, VA
  • NPI 1265472286
  Care Compare affiliation
• Rector & Visitors of the University of Virginia

  • General Acute Care Hospital
  • Charlottesville, VA
  • NPI 1780630608
  Care Compare affiliation
• Sentara RMH Medical Center

  • General Acute Care Hospital
  • Harrisonburg, VA
  • NPI 1780694372
  Care Compare affiliation

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

{
    "created_epoch": "1149292800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743984000000",
    "number": "1972541548",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "406 ALBEMARLE SQ",
            "city": "CHARLOTTESVILLE",
            "state": "VA",
            "postal_code": "229017400",
            "telephone_number": "434-422-1919",
            "fax_number": "434-202-4510"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "416 ALBEMARLE SQ",
            "city": "CHARLOTTESVILLE",
            "state": "VA",
            "postal_code": "229017400",
            "telephone_number": "434-422-1919",
            "fax_number": "434-402-4510"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIEHAUS",
        "first_name": "MARK",
        "middle_name": "D",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-03",
        "last_updated": "2025-04-07",
        "certification_date": "2025-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "VA",
            "license": "0101234414",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101234414",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nicole Beasley, PHD
• Darlene Nicoletti, DDS
• Barbara L. Nidiffer, OT/L
• Dinah Hays Nieburg, PH.D.
• Phillip Irwin Nieburg, MD, MPH
• Valeria Paola Niehaus, P.T.
• David Alan Nielsen, D.O.
• Heather Nielsen, MPT
• Markus L Niepraschk, DDS, MS
• Megan Elizabeth Nigh, PA

• Internal Medicine Physician in Charlottesville, VA
• Providers in Charlottesville, VA by specialty
• Internal Medicine Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 7, 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.

Verify at the official NPI Registry.