NPIMap

Individual provider Active NPI

John Frederick Shield, MD

  • Internal Medicine Physician
  • Sonora, CA
National Provider Identifier
1033189634
Registry record updated Jun 24, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
G45205 Issued in CA
Practice address
690 Guzzi LN
Suite a
Sonora, CA 95370-5289
Phone
(209) 536-5070
NPI assigned
Jan 25, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 24, 2024

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G45205 CA Primary

Addresses

Primary practice location

690 Guzzi LN
Suite a
Sonora, CA 95370-5289

Mailing address

690 Guzzi LN Ste a
Sonora, CA 95370-5292
Phone (209) 536-5070

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, IN2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20080625000410 CA Practitioner - Internal Medicine 7911078563 Reassigns benefits to 1 organization
I20250915000386 IN Practitioner - Internal Medicine 7911078563 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1980
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1530 N 7TH St
Suite 104
Terre Haute, IN 47807-1057
Phone (812) 234-1344

1530 N 7TH St
Suite 201
Terre Haute, IN 47807-1061
Phone (812) 238-7631

777 S Main St
Suite 100
Clinton, IN 47842-2493
Phone (765) 828-1003

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.78 of 100Reported as group
Quality
81.74
Promoting interoperability
97
Improvement activities
40
Cost
67.27

Procedures performed for Medicare patients

ProcedureNumber of procedures
Melanoma (skin cancer) excision1-10
Removal of skin lesions1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
G45205CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Union Associated Physicians Clinic, LLC CurrentSince Aug 29, 2025 Accepting new patients
Union Associated Physicians Clinic LLC CurrentSince Aug 29, 2025 Accepting new patients
Valley Professionals Community Health Center, Inc. Current Accepting new patients
Sonora Community Hospital CurrentSince May 3, 2024 Accepting new patients
Sonora Community Hospital Current Accepting new patients
Valley Professionals Community Health Center Inc CurrentSince Sep 17, 2025 Accepting new patients
Valley Professionals Community Health Center Inc CurrentSince Sep 17, 2025 Accepting new patients

Locations

18661 Highway 120
Groveland, CA 95321
Phone (209) 962-7121

14542 Lolly Ln
Sonora, CA 95370
Phone (209) 536-3625

12811 Covey Cir
Sonora, CA 95370
Phone (209) 536-1785

900 Greenley Rd
Ste 911
Sonora, CA 95370
Phone (209) 532-0511

680 Guzzi Ln
Ste 201
Sonora, CA 95370
Phone (209) 536-1785

690 Guzzi Ln
Ste Cd
Sonora, CA 95370
Phone (209) 536-3820

1000 Greenley Rd
Sonora, CA 95370
Phone (209) 263-0803

777 S Main St
Ste 100
Clinton, IN 47842
Phone (765) 828-1003

1530 N 7th St
Ste 104
Terre Haute, IN 47807
Phone (812) 234-1344

1606 N 7th St
Terre Haute, IN 47804
Phone (812) 238-7523

221 S 6th St
Terre Haute, IN 47807
Phone (812) 242-3157

1530 N 7th St
Ste 201
Terre Haute, IN 47807
Phone (812) 238-7631

Organizations & group practices 7

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.

Hospital & facility affiliations 14

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

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1138147200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1719187200000",
    "number": "1033189634",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "690 GUZZI LN STE A",
            "city": "SONORA",
            "state": "CA",
            "postal_code": "953705292",
            "telephone_number": "209-536-5070"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "690 GUZZI LN",
            "address_2": "SUITE A",
            "city": "SONORA",
            "state": "CA",
            "postal_code": "953705289",
            "telephone_number": "209-536-5070"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SHIELD",
        "first_name": "JOHN",
        "middle_name": "FREDERICK",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-25",
        "last_updated": "2024-06-24",
        "certification_date": "2024-06-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G45205",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sonora, CA

Sources for this page

Verify at the official NPI Registry.