Stephen Nicewarner, CRNP

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

R228108 Issued in MD

Practice address

9093 Ridgefield Dr Ste 104
Frederick, MD 21701-6711

Phone

(240) 956-5475

Fax

(240) 891-2600

NPI assigned

Jan 17, 2023

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

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

Practice addresses (Care Compare)

Hospital & facility affiliations

• Frederick Health Hospital Hospital, Frederick, MD, CCN 210005

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Privia Medical Group, LLC

  • Internal Medicine Physician
  • Arlington, VA
  • NPI 1013042480

  MD

  Medicare reassignment Care Compare group
• Privia Care Center LLC

  • Internal Medicine Physician
  • Arlington, VA
  • NPI 1164874426

  MD

  Medicare reassignment
• Frederick Health Employer Solutions

  • Occupational Medicine Physician
  • Frederick, MD
  • NPI 1699312686
  NPD
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

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

• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  Care Compare affiliation

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

{
    "created_epoch": "1673913600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773964800000",
    "number": "1548975253",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9093 RIDGEFIELD DR STE 104",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217016711",
            "telephone_number": "240-956-5475",
            "fax_number": "240-891-2600"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9093 RIDGEFIELD DR STE 104",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217016711",
            "telephone_number": "240-956-5475",
            "fax_number": "240-891-2600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NICEWARNER",
        "first_name": "STEPHEN",
        "credential": "CRNP",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-01-17",
        "last_updated": "2026-03-20",
        "certification_date": "2026-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MD",
            "license": "R228108",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CRNP LICENSE",
            "identifier": "R228108",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Faith W Nguyen, CRNP
• Jessica Nguyen
• Joe Truong Nguyen, DDS, PHD
• Jankey Ceesay Niasse
• Morgan Nicely
• Amy Lynn Nicholas, MD
• Andrew Nicholas, OTR/L
• Caroline Nichols, PT
• Chloe Nichols, NP
• Jennifer Nichols, MS, CCC-SLP

• Endocrinology, Diabetes & Metabolism Physician in Frederick, MD
• Providers in Frederick, MD by specialty
• Endocrinology, Diabetes & Metabolism Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 20, 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.

Verify at the official NPI Registry.