Individual provider Active NPI

Franciscus Marius Delen, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • San Francisco, CA
National Provider Identifier
1770563041
Registry record updated Jul 13, 2007
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
162151 Issued in CA
Practice address
45 Castro St
200
San Francisco, CA 94114-1010
Phone
(415) 252-1090
NPI assigned
Jan 20, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 13, 2007

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Pulmonary Disease Physician 207RP1001X 162151 CA
Internal Medicine Physician 207R00000X 162151 CA
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 162151 CA Primary

Addresses

Primary practice location

45 Castro St
200
San Francisco, CA 94114-1010

Mailing address

45 Castro St
Suite #200
San Francisco, CA 94114-1010
Phone (415) 252-1090

Other identifiers 1

IdentifierTypeStateIssuer
00G775070MedicaidCA

Other names 1

  • Frank M Delen Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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

Enrollment IDStateProvider typePAC IDDetails
I20060201000182 CA Practitioner - Critical Care (Intensivists)Practitioner - Internal MedicinePractitioner - Pulmonary Disease 0143234948 Reassigns benefits to 1 organization
Practice locations: San Francisco, CA

Care Compare profile

Medicare Care Compare
Specialty
Critical Care (Intensivists)Also: Internal Medicine, Pulmonary Disease
Education
University of California, Irvine, California College of Medicine, 1992
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sutter Bay Medical FoundationGroup PAC ID 4284538778, 3,783 clinicians

Practice addresses (Care Compare)

1100 Van Ness Ave
San Francisco, CA 94109-6978
Phone (415) 600-0140

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
77507CAMDClinical Social Worker
162151CAMDPulmonary Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Sutter Bay Medical Foundation CurrentSince Mar 1, 2026 Accepting new patients
Sutter Bay Medical Foundation CurrentSince Mar 1, 2026 Accepting new patients
California Pacific Medical Group, Inc. Past Accepting new patients

Locations

1100 Van Ness Ave
Ste 1005
San Francisco, CA 94109
Phone (415) 923-3421

1100 Van Ness Ave
San Francisco, CA 94109
Phone (415) 600-5760

45 Castro St
Ste 200
San Francisco, CA 94114
Phone (415) 523-6555

4700 Hoen Ave
Santa Rosa, CA 95405
Phone (707) 526-3360

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: fdelen25380@hisp.ehr.sutterhealth.org

Organizations & group practices 3

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1137715200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1184284800000",
    "number": "1770563041",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "45 CASTRO ST",
            "address_2": "SUITE #200",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941141010",
            "telephone_number": "415-252-1090"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "45 CASTRO ST",
            "address_2": "200",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941141010",
            "telephone_number": "415-252-1090"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DELEN",
        "first_name": "FRANCISCUS",
        "middle_name": "MARIUS",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-01-20",
        "last_updated": "2007-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "162151",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "162151",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "162151",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G775070",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "FRANK",
            "last_name": "DELEN",
            "middle_name": "M",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.