Lacy Jay Nasseh, FNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

95120763 Issued in CA

Practice address

2255 Ygnacio Valley Rd Ste T35
Walnut Creek, CA 94598-3343

Phone

(925) 681-9246

NPI assigned

Sep 21, 2022

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Lacy Jay Martin Former name

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: lnasseh162520@ehr.johnmuirhealth.com
• FHIR API: https://fhir4.healow.com/fhir/r4/IBDGCA

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.

• Bass Medical Group

  • Obstetrics & Gynecology Physician
  • Walnut Creek, CA
  • NPI 1174253405
  Medicare reassignment Care Compare group NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • Walnut Creek, CA
  • NPI 1043616600
  NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • San Ramon, CA
  • NPI 1467329904
  NPD
• Bass Medical Group

  • Specialist
  • Walnut Creek, CA
  • NPI 1154401941
  NPD (past)

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

• John Muir Health

  dba John Muir Health, Walnut Creek Medical Center

  • General Acute Care Hospital
  • Walnut Creek, CA
  • NPI 1740215219
  Care Compare affiliation

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

{
    "created_epoch": "1663718400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740960000000",
    "number": "1255054631",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2255 YGNACIO VALLEY RD STE T",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983343",
            "telephone_number": "925-954-8209",
            "fax_number": "925-891-4292"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2255 YGNACIO VALLEY RD STE T35",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983343",
            "telephone_number": "925-681-9246"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NASSEH",
        "first_name": "LACY",
        "middle_name": "JAY",
        "credential": "FNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-09-21",
        "last_updated": "2025-03-03",
        "certification_date": "2025-03-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95120763",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "LACY",
            "last_name": "MARTIN",
            "middle_name": "JAY",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Napa Management Services, LLC
• Nara Care, Inc (SYNERGY HomeCare of Walnut Creek)
• Harish Anandha Narayanan, M.D.
• Tiffany (Terry) Catherine (Benjamin) Narducci
• Joseph Narloch, M.D.
• Morad Nasseri, M.D.
• Natalie C Renda MD Inc
• Akshitha Saroj Natarajan
• Kishore Nath, M.D.
• Manjari Nathan, M.D.

• Family Nurse Practitioner in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Family Nurse Practitioner in California

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