John Bret Cellar, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

A49077 Issued in CA

Practice address

2425 Samaritan Dr
San Jose, CA 95124-3908

Phone

(408) 558-2100

NPI assigned

Jun 25, 2006

Last updated

Jul 13, 2026By 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 1

Addresses

Other identifiers 1

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

Anesthesiology

Education

Baylor College of Medicine, 1987

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

G2 Anesthesia PCGroup PAC ID 3375873599, 104 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Good Samaritan Hospital Hospital, San Jose, CA, CCN 050380

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• G2 Anesthesia PC

  • Anesthesiology Physician
  • Los Gatos, CA
  • NPI 1487214698
  Medicare reassignment Care Compare group NPD
• Cep America - Anesthesia, PC

  • Anesthesiology Physician
  • Walnut Creek, CA
  • NPI 1790401438
  Medicare reassignment NPD
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Palo Alto, CA
  • NPI 1588023949
  NPD
• Cep America - Anesthesia PC

  • Anesthesiology Physician
  • Langhorne, PA
  • NPI 1093678229
  NPD
• Aaamg, Inc., a California Medical Corporation

  dba Associated Anesthesiologists Medical Group

  • Anesthesiology Physician
  • San Jose, CA
  • NPI 1225086507
  NPD (past)
• County of Santa Clara

  dba Inpatient Acute/Outpatient Facility Services

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1063406551
  NPD (past)
• Good Samaritan Hospital, L.P.

  dba Good Samaritan Hospital

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1376595777
  NPD (past)
• Joan Oloff D P M Inc

  dba Los Gatos Foot and Ankle Center

  • Podiatrist
  • Los Gatos, CA
  • NPI 1225257728
  NPD (past)

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

• Good Samaritan Hospital, L.P.

  dba Good Samaritan Hospital

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1437103777
  Care Compare affiliation

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

{
    "created_epoch": "1151193600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1073549473",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 51451",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900515751"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2425 SAMARITAN DR",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951243908",
            "telephone_number": "408-558-2100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CELLAR",
        "first_name": "JOHN",
        "middle_name": "BRET",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A49077",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A490760",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Robert Celaya, RNFA
• Celebes Sea Holdings LLC (Santana Hills Healthcare Center)
• Anahit Celio
• Thomas Cella, LCSW
• Debra Brown Cellar, MD
• Lindsay Grace Cellar
• Cellarius Marriage and Therapy Inc (Your Growth Counseling)
• Celsius Neuropsychology, a Psychology Corporation
• Michael Benedict Celso, MSW
• Celtrivis Biolabs LLC

• Anesthesiology Physician in San Jose, CA
• Providers in San Jose, CA by specialty
• Anesthesiology 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.
• 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.