Nicholus Michael Warstadt, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A175155 Issued in CA

Practice address

4077 Fifth Ave
San Diego, CA 92103-2105

Phone

(619) 686-3800

NPI assigned

Apr 12, 2018

Sex

Male

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 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

Emergency Medicine

Education

Stanford University School of Medicine, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Sharp Rees-Stealy Medical Group IncGroup PAC ID 8628972759, 872 clinicians

Pacific Emergency Providers a Prof CorpGroup PAC ID 1557327608, 24 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

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

Merit-based Incentive Payment System (MIPS)

Final score

90.8 of 100Reported as group

Quality

91.79

Promoting interoperability

100

Improvement activities

40

Cost

75.18

Merit-based Incentive Payment System (MIPS)

Final score

93.4 of 100Reported as group

Quality

82.48

Improvement activities

40

Cost

76.78

Merit-based Incentive Payment System (MIPS)

Final score

88.67 of 100Reported as group

Quality

81.04

Promoting interoperability

99

Improvement activities

40

Cost

82.04

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nwarstadt24823@sharphealthcare.direct-ci.com

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.

• Pacific Emergency Providers, a Prof. Corp.

  • Emergency Medicine Physician
  • San Diego, CA
  • NPI 1497790539
  Medicare reassignment Care Compare group NPD
• Sharp Rees-Stealy Medical Group, Inc

  • Internal Medicine Physician
  • San Diego, CA
  • NPI 1285616177

  Emergency Medicine

  Medicare reassignment Care Compare group NPD
• Sharp Rees-Stealy Medical Group, Inc

  • Optometrist
  • San Diego, CA
  • NPI 1063172351
  NPD
• Scripps Health

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1659359446
  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": "1523491200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1831696194",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4077 FIFTH AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032105"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4077 FIFTH AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921032105",
            "telephone_number": "619-686-3800"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARSTADT",
        "first_name": "NICHOLUS",
        "middle_name": "MICHAEL",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-12",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A175155",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nathanael Lee Warren
• Taylor Warren
• Tiffany Nicole Warren, AU.D.
• Kasper Warrick
• Warrior Medicine and Acupuncture Professional Corporation
• Kayla Wartner
• Alexis Reilly Warye
• Waseem Khader DO Inc
• Malerie Wash
• Cameron Lynn Washburn, ATC

• Emergency Medicine Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Emergency Medicine Physician in California

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