Man-Siak Mak, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A26785 Issued in CA

Practice address

3349 G Street Ste. F
Merced, CA 95340

Phone

(209) 349-8459

Fax

(209) 580-4138

NPI assigned

Jul 18, 2005

Reactivated

Mar 21, 2006

Sex

Male

Sole proprietor

Yes

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

GastroenterologyAlso: Internal Medicine

Education

Other, 1968

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Timothy S Johnston MD PC 9 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Medical Center Hospital, Merced, CA, CCN 050444

Procedures performed for Medicare patients

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 and National Provider Directory roles.

• Timothy S. Johnston, M.D. PC

  • Family Medicine Physician
  • Merced, CA
  • NPI 1407306665

  CA

  Medicare reassignment Care Compare group NPD
• Timothy S. Johnston, M.D. PC

  • Primary Care Clinic/Center
  • Merced, CA
  • NPI 1427793371
  NPD
• Dignity Health

  • General Acute Care Hospital
  • Merced, CA
  • NPI 1518018191
  NPD (past)

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

• Dignity Health

  • General Acute Care Hospital
  • Merced, CA
  • NPI 1518018191

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1121644800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1555459200000",
    "number": "1609875004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3349 G STREET STE. F",
            "city": "MERCED",
            "state": "CA",
            "postal_code": "95340",
            "telephone_number": "209-349-8459",
            "fax_number": "209-580-4138"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3349 G STREET STE. F",
            "city": "MERCED",
            "state": "CA",
            "postal_code": "95340",
            "telephone_number": "209-349-8459",
            "fax_number": "209-580-4138"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAK",
        "first_name": "MAN-SIAK",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-07-18",
        "last_updated": "2019-04-17",
        "deactivation_date": "2006-03-16",
        "reactivation_date": "2006-03-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A26785",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A267850",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Thida Mahasucon, DDS
• Alireza Mahmoudieh, MD
• Mai K Yang
• Sonya Ann Maier
• Patricia Michaele Maiorino, D.C.
• Gloria Jean Malabed-Verona
• Selene Nicole Maldonado Lopez
• Elizavet Maldonado
• Juana Maldonado
• Olivia Maldonado

• All providers in Merced, CA
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 2019; 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.