Waldo Dittmar IV, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A155351 Issued in CA

Practice address

1100 Van Ness Ave
San Francisco, CA 94109-6978

Phone

(415) 600-5760

Fax

(415) 369-1208

NPI assigned

Apr 13, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

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

Internal Medicine

Education

Other, 2015

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)

Hospital & facility affiliations

• California Pacific Medical Center- Van Ness Campus Hospital, San Francisco, CA, CCN 050047

Merit-based Incentive Payment System (MIPS)

Final score

85.51 of 100Reported as individual

Quality

96.63

Improvement activities

0

Cost

81.81

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wdittmar418756@hisp.ehr.sutterhealth.org

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.

• Sutter Bay Medical Foundation

  dba Palo Alto Medial Foundation

  • Multi-Specialty Clinic/Center
  • Palo Alto, CA
  • NPI 1013950807
  Medicare reassignment Care Compare group NPD
• Galen Inpatient Physicians, PC

  • Hospitalist Physician
  • Manteca, CA
  • NPI 1689320459
  Medicare reassignment NPD
• Marin Hospitalist Medical Group, Inc.

  • Internal Medicine Physician
  • Greenbrae, CA
  • NPI 1023041753
  Medicare reassignment NPD
• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Los Angeles, CA
  • NPI 1205787686
  NPD
• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Greenbrae, CA
  • NPI 1841037850
  NPD
• Sutter Bay Medical Foundation

  dba Palo Alto Medical Foundation

  • Clinical Medical Laboratory
  • Santa Clara, CA
  • NPI 1669287033
  NPD
• Prima Medical Group, Inc.

  • Family Medicine Physician
  • San Rafael, CA
  • NPI 1154377489
  NPD (past)

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

• Sutter Bay Hospitals

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1740348929
  Care Compare affiliation

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

{
    "created_epoch": "1428883200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756080000000",
    "number": "1588050934",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 276950",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958276950",
            "telephone_number": "415-600-5760",
            "fax_number": "415-369-1208"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 VAN NESS AVE",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941096978",
            "telephone_number": "415-600-5760",
            "fax_number": "415-369-1208"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DITTMAR",
        "first_name": "WALDO",
        "name_prefix": "Dr.",
        "name_suffix": "IV",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-13",
        "last_updated": "2025-08-25",
        "certification_date": "2025-08-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A155351",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A155351",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Carlos M. Disdier
• Anna Distefano, RDN
• Lily Ora Dithrich, MA
• Luke Dittes
• Katherine Dittmann, MS, RD
• Rosanna Noel Dittrich, LVN
• Lauren Ditzian
• Sushmitha Divakar
• Bethany Divakaran, RN PHN
• Divergent Worlds Psychotherapy and Consulting, Inc. (Rachel Robbins, Psy.D.)

• Internal Medicine Physician in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 25, 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.