Hamid R. Rassai

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

A060998 Issued in CA

Practice address

2350 Country Hills Dr Ste a
Antioch, CA 94509-7436

Phone

(925) 757-0800

Fax

(925) 757-2160

NPI assigned

Sep 15, 2006

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

General Surgery

Education

Medical College of Pennsylvania, 1995

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

• Sutter Care at Home Home health agency, Concord, CA, CCN 057004
• Sutter Delta Medical Center Hospital, Antioch, CA, CCN 050523
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496

Merit-based Incentive Payment System (MIPS)

Final score

97.22 of 100Reported as individual

Quality

77.26

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: hrassai17917@ehr.johnmuirhealth.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.

• Bass Medical Group

  • Obstetrics & Gynecology Physician
  • Walnut Creek, CA
  • NPI 1174253405
  Medicare reassignment Care Compare group NPD
• John Muir Trauma Physicians Billing Service

  • Hospitalist Physician
  • Walnut Creek, CA
  • NPI 1093864837
  Medicare reassignment NPD
• San Joaquin Faculty Medical Group

  • Internal Medicine Physician
  • French Camp, CA
  • NPI 1225063761
  Medicare reassignment NPD
• Bass Medical Group

  • Specialist
  • Walnut Creek, CA
  • NPI 1154401941
  NPD
• Bass Medical Group

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

  • Pain Medicine Physician
  • Visalia, CA
  • NPI 1326409343
  NPD (past)
• County of San Joaquin

  • General Acute Care Hospital
  • French Camp, CA
  • NPI 1275605180
  NPD (past)
• John Muir Health

  • Rehabilitation Hospital Unit
  • Walnut Creek, CA
  • NPI 1447269303
  NPD (past)
• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  NPD (past)
• Sutter Bay Hospitals

  • Rehabilitation Hospital Unit
  • Oakland, CA
  • NPI 1194171371
  NPD (past)
• Sutter Delta Medical Center

  • General Acute Care Hospital
  • Antioch, CA
  • NPI 1124135132
  NPD (past)

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

• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  Care Compare affiliation
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Antioch, CA
  • NPI 1467808659
  Care Compare affiliation
• Sutter Visiting Nurse Association and Hospice

  • Home Health Agency
  • Concord, CA
  • NPI 1083643944
  Care Compare affiliation

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

{
    "created_epoch": "1158278400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748908800000",
    "number": "1013013218",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2350 COUNTRY HILLS DR STE A",
            "city": "ANTIOCH",
            "state": "CA",
            "postal_code": "945097436",
            "telephone_number": "925-757-0800",
            "fax_number": "925-757-2160"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2350 COUNTRY HILLS DR STE A",
            "city": "ANTIOCH",
            "state": "CA",
            "postal_code": "945097436",
            "telephone_number": "925-757-0800",
            "fax_number": "925-757-2160"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2222 East St Ste 300",
            "address_purpose": "LOCATION",
            "city": "Concord",
            "state": "CA",
            "postal_code": "945202066",
            "country_code": "US",
            "telephone_number": "925-682-7730",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RASSAI",
        "first_name": "HAMID",
        "middle_name": "R.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-15",
        "last_updated": "2025-06-03",
        "certification_date": "2025-06-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A060998",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christina Frances Ramsden, PA
• Alicia Ramsey, PA-C
• Shamarei Randall
• Kavitha Rao, M.D.
• Samina Rashid, MD
• Ajanique Raven
• Desiree Leslie Rawls
• Erica Ray
• Eddie Upsornsopakit Raymundo
• Yemimah Raza

• Surgery Physician in Antioch, CA
• Providers in Antioch, CA by specialty
• Surgery Physician in California

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