Bryan Dieffenbach, M.D.

Primary specialty

Vascular Surgery PhysicianTaxonomy code 2086S0129X

License

A188066 Issued in CA

Practice address

550 Washington St Ste 641
San Diego, CA 92103-2229

Phone

(619) 299-2600

Fax

(619) 299-3923

NPI assigned

Mar 31, 2014

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

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

Specialty

Vascular SurgeryAlso: General Surgery

Education

University of California, San Diego School of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Scripps Health Inpatient Providers Medical Group IncGroup PAC ID 9436314762, 209 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Scripps Mercy Hospital Hospital, San Diego, CA, CCN 050077

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

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.

• Bryan Dieffenbach, Inc.

  • Vascular Surgery Physician
  • San Diego, CA
  • NPI 1871276386
  Medicare reassignment NPD Authorized official
• Scripps Health Inpatient Providers Medical Group Inc.

  • Multi-Specialty Clinic/Center
  • La Jolla, CA
  • NPI 1699043000
  Medicare reassignment Care Compare group NPD
• On Call Specialists Medical Group of San Diego, Inc.

  • Specialist
  • San Diego, CA
  • NPI 1962175836
  Medicare reassignment NPD
• Regents of the University of California

  • Surgery Physician
  • San Diego, CA
  • NPI 1740382993
  Medicare reassignment NPD
• Regents of the University of California

  • Diagnostic Radiology Physician
  • San Diego, CA
  • NPI 1558463927
  NPD
• Scripps Health

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1659359446
  NPD
• Scripps Health

  • Clinical Medical Laboratory
  • La Jolla, CA
  • NPI 1427034990
  NPD (past)
• Scripps Health

  • General Acute Care Hospital
  • La Jolla, CA
  • NPI 1841277704
  NPD (past)

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

• Scripps Health

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1659359446
  Care Compare affiliation

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

{
    "created_epoch": "1396224000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747180800000",
    "number": "1326466137",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "550 WASHINGTON ST STE 641",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032229",
            "telephone_number": "619-299-2600",
            "fax_number": "619-299-3923"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "550 WASHINGTON ST STE 641",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032229",
            "telephone_number": "619-299-2600",
            "fax_number": "619-299-3923"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 W Arbor Dr",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921039000",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "9300 Campus Point Dr",
            "address_purpose": "LOCATION",
            "city": "LA Jolla",
            "state": "CA",
            "postal_code": "920371300",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6655 Alvarado Rd",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921205208",
            "country_code": "US",
            "telephone_number": "800-926-8273",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DIEFFENBACH",
        "first_name": "BRYAN",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2014-03-31",
        "last_updated": "2025-05-14",
        "certification_date": "2025-05-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "CA",
            "license": "A188066",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Claire Didion, L.AC.
• Stephanie Diebold, M.D.
• Tanner Michael Diebold, DC
• Julia Diebolt, MA, BCBA
• Alejandra K. Diedrich, P.A.
• Catherine Dieffenbach, MD
• Guadalupe Diego
• Valeria Diego
• Violet Diego
• Marie France Dieguez Davis, APCC

• Vascular Surgery Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Vascular Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 14, 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.