Louisa Ziglar, MD

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

D80134 Issued in MD

Practice address

161 Thomas Johnson Dr Ste 250
Frederick, MD 21702-4958

Phone

(301) 942-7600

Fax

(301) 694-0187

NPI assigned

May 13, 2008

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in DC, MD2 enrollments

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 2

Specialty

Rheumatology

Education

State University of New York Downstate Medical Center, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Arthritis and Rheumatism Associates PCGroup PAC ID 5597750703, 50 clinicians

Amber Hill Physical Therapy IncGroup PAC ID 8527963917, 336 clinicians

Frederick Health Hospital IncGroup PAC ID 0446149256, shared by 8 NPIs, 127 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: louisa.ziglarmd.p1@direct.aramd.nextgenshare.com
• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

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.

• Arthritis and Rheumatism Associates PC

  • Rheumatology Physician
  • Rockville, MD
  • NPI 1447259866

  DC

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

  • Internal Medicine Physician
  • Arlington, VA
  • NPI 1013042480

  DC

  Medicare reassignment NPD
• Amber Hill Physical Therapy, Inc.

  • Physical Therapist
  • Frederick, MD
  • NPI 1548290224
  Care Compare group
• Privia Medical Group, LLC

  • Pain Medicine (Psychiatry & Neurology) Physician
  • Rockville, MD
  • NPI 1811715436
  NPD
• Frederick Health Hospital Inc

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)
• Michael P Lewko MD LLC

  • Rheumatology Physician
  • Clifton, NJ
  • NPI 1154333979
  NPD (past)

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

• Frederick Health Hospital Inc

  • 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": "1210636800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770249600000",
    "number": "1538336151",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7361 CALHOUN PL STE 600",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208552788",
            "telephone_number": "301-942-7600",
            "fax_number": "301-942-3521"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "161 THOMAS JOHNSON DR STE 250",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217024958",
            "telephone_number": "301-942-7600",
            "fax_number": "301-694-0187"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "14995 Shady Grove Rd Ste 500",
            "address_purpose": "LOCATION",
            "city": "Rockville",
            "state": "MD",
            "postal_code": "208508726",
            "country_code": "US",
            "telephone_number": "301-942-7600",
            "fax_number": "301-774-1799",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZIGLAR",
        "first_name": "LOUISA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-05-13",
        "last_updated": "2026-02-05",
        "certification_date": "2026-02-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "MD",
            "license": "D80134",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Zenbees Psychiatry and Wellness Services
• Kimberly Lyn Zeren, CRNP- FAMILY
• Patricia Zetkulic, LCPC
• Dulat Zhandossov, DPT
• Mahsa Ziashakeri
• Katumu Zinnah
• Zion Zeal Home Care
• Rachel Meisler Zirlin, MS, CCC-SLP
• Kimberly C Zisman, RDN,LDN
• Zizi Inc

• Rheumatology Physician in Frederick, MD
• Providers in Frederick, MD by specialty
• Rheumatology Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 5, 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.