Margaret M. Byrne, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

52519 Issued in CA

Practice address

2 Embarcadero Ctr Lbby Level
San Francisco, CA 94111-3823

Phone

(888) 663-6331

Fax

(415) 252-7176

NPI assigned

Aug 7, 2014

Last updated

Oct 7, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other names 1

• Margaret M. Helf Former name

Medicare fee-for-service enrollment

Enrolled in CA, MI, WI3 enrollments

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 3

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mbyrne73562@scrippshlth.medalliesdirect.net

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.

• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • Santa Ana, CA
  • NPI 1548667843
  Medicare reassignment
• Team Physicians of Northern California Medical Group Inc

  • Emergency Medicine Physician
  • Pleasanton, CA
  • NPI 1649692716
  Medicare reassignment
• New Dermatology Group LTD

  • Dermatology Physician
  • Howard, WI
  • NPI 1235480112

  MI

  Medicare reassignment
• Cep America - California

  dba Vituity

  • Emergency Medicine Physician
  • Camarillo, CA
  • NPI 1477844884
  NPD
• Scripps Health

  dba Scripps Hospital Medical Services

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1487928891
  NPD
• New Dermatology Group LTD

  • Dermatology Physician
  • Iron Mountain, MI
  • NPI 1710321633
  NPD (past)

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

{
    "created_epoch": "1407369600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791331200000",
    "number": "1871902411",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723",
            "telephone_number": "415-658-6791",
            "fax_number": "415-520-0904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2 EMBARCADERO CTR LBBY LEVEL",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113823",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BYRNE",
        "first_name": "MARGARET",
        "middle_name": "M.",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-08-07",
        "last_updated": "2026-10-07",
        "certification_date": "2026-10-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "IL",
            "license": "085005222",
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "52519",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARGARET",
            "last_name": "HELF",
            "middle_name": "M.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Catherine Marie Byrne
• Claire Fong Byrne, AMFT
• Craig Byrne
• Erin Byrne
• Marc Byrne
• Michaela Byrne, CNM, WHNP
• Maria Elizabeth Byron, MD
• Rachel Bystritsky
• Steve Byun, DDS
• Byw Acupuncture Inc

• Physician Assistant in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 7, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.