Andrew H Messiha, MD

Primary specialty

Pain Medicine (Anesthesiology) PhysicianTaxonomy code 207LP2900X

License

A135825 Issued in CA

Practice address

23521 Paseo de Valencia Ste 204
Laguna Hills, CA 92653-3101

Phone

(949) 458-2026

Fax

(949) 273-8053

NPI assigned

Aug 20, 2009

Last updated

Nov 3, 2025By the provider in NPPES

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

Pain ManagementAlso: Anesthesiology

Education

Pennsylvania State University College of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Andrew H Messiha MDGroup PAC ID 9436569878, 2 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224
• Memorialcare Saddleback Medical Center Hospital, Laguna Hills, CA, CCN 050603

Merit-based Incentive Payment System (MIPS)

Final score

99.95 of 100Reported as group

Quality

99.91

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: amessiha336565@direct.memorialcare.org
• FHIR API: https://fhir4.healow.com/fhir/r4/IJFBAA

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.

• Andrew H Messiha MD

  dba Precision Pain Management

  • Pain Medicine (Anesthesiology) Physician
  • Laguna Hills, CA
  • NPI 1487251542
  Medicare reassignment Care Compare group NPD Authorized official
• Saddleback Pain and Surgical Center

  • Ambulatory Surgical Clinic/Center
  • Laguna Hills, CA
  • NPI 1578160636
  Authorized official Same address or phone

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

• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  Care Compare affiliation
• Saddleback Memorial Medical Center

  • General Acute Care Hospital
  • Laguna Hills, CA
  • NPI 1275576381
  Care Compare affiliation

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

{
    "created_epoch": "1250726400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762128000000",
    "number": "1700018926",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "23521 PASEO DE VALENCIA STE 204",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533101",
            "telephone_number": "949-458-2026",
            "fax_number": "924-273-8053"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "23521 PASEO DE VALENCIA STE 204",
            "city": "LAGUNA HILLS",
            "state": "CA",
            "postal_code": "926533101",
            "telephone_number": "949-458-2026",
            "fax_number": "949-273-8053"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MESSIHA",
        "first_name": "ANDREW",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-08-20",
        "last_updated": "2025-11-03",
        "certification_date": "2025-11-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207LP2900X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pain Medicine",
            "state": "CA",
            "license": "A135825",
            "primary": true
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A135825",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elloitt Mercer, M.D.
• Andrew Merritt, M.D.
• Edward Joseph Mescher, M.D
• Kevin Willard Mescher
• Ali Meschi, PHD
• Marc Joseph Mestyanek
• Michael J Eilbert M.D, Inc
• Michael J. Watanabe, M.D., Apc
• Michael W Shen, M.D., Inc
• Michelle M. Algarin, M.D., Inc

• Pain Medicine (Anesthesiology) Physician in Laguna Hills, CA
• Providers in Laguna Hills, CA by specialty
• Pain Medicine (Anesthesiology) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 3, 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.