Jonathan Henry Segal, MD

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

G59448 Issued in CA

Practice address

150 Muir Rd
Martinez, CA 94553-4668

Phone

(925) 372-4610

Fax

(925) 372-2804

NPI assigned

Nov 18, 2005

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1132272000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1780666164",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 MUIR RD",
            "city": "MARTINEZ",
            "state": "CA",
            "postal_code": "945534668",
            "telephone_number": "925-372-4610",
            "fax_number": "925-372-2804"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "150 MUIR RD",
            "city": "MARTINEZ",
            "state": "CA",
            "postal_code": "945534668",
            "telephone_number": "925-372-4610",
            "fax_number": "925-372-2804"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SEGAL",
        "first_name": "JONATHAN",
        "middle_name": "HENRY",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-18",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "CA",
            "license": "G59448",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Paris Scott, MD
• Anne Scouten, LCSW
• Elaine Seawell
• Second Nature Behavioral Health Services, Inc. (Second Nature)
• Christopher Gerard See, D.C.
• Rebeca Segura-Robins, MD
• Sandra Seier, M.D.
• Candace Selover, PSYD
• Rachel Semple, OTD, OTD R/L
• Seneca Center

• Nephrology Physician in Martinez, CA
• Providers in Martinez, CA by specialty
• Nephrology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.