Individual provider Active NPI

Zachary Ryan Denham, MD

  • Anesthesiology Physician
  • Dover, OH
National Provider Identifier
1427552454
Registry record updated Jun 2, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
35.144134 Issued in OH
Practice address
659 Boulevard St
Dover, OH 44622-2026
Phone
(330) 343-3311
NPI assigned
Mar 23, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 2, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 35.144134 OH Primary

Addresses

Primary practice location

659 Boulevard St
Dover, OH 44622-2026

Mailing address

659 Boulevard St
Dover, OH 44622-2026
Phone (330) 827-9225

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20221004001761 CA Practitioner - Anesthesiology 4486030145 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sacsolano Anesthesia Exchange Medical Group, IncGroup PAC ID 9537382882, 32 clinicians

Practice addresses (Care Compare)

3315 Watt Ave
Sacramento, CA 95821-3600
Phone 91648168001234

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
35.144134OHMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Sutter Bay Medical Foundation CurrentSince Dec 15, 2022 Accepting new patients
Sacsolano Anesthesia Exchange Medical Group, Inc Anesthesiology CurrentSince Oct 1, 2022 Accepting new patients
Sutter Bay Medical Foundation CurrentSince Dec 15, 2022 Accepting new patients
Sutter Bay Medical Foundation Current Accepting new patients
Central Anesthesia Service Exchange Medical Group, Inc. Anesthesiology Past Accepting new patients

Locations

18400 US Highway 18
Apple Valley, CA 92307
Phone (760) 810-7590

350 John Muir Pkwy
Ste 160
Brentwood, CA 94513
Phone (925) 204-1920

1950 University Ave
Ste 160
East Palo Alto, CA 94303
Phone (650) 317-8100

3200 Kearney St
Fremont, CA 94538
Phone (510) 498-2800

1189 E Herndon Ave
Ste 103
Fresno, CA 93720
Phone (559) 450-7777

370 Distel Cir
Los Altos, CA 94022
Phone (650) 254-5200

600 Coffee Rd
Modesto, CA 95355
Phone (209) 550-4755

101 Rowland Way
Ste 220
Novato, CA 94945
Phone (415) 878-7200

795 El Camino Real
Palo Alto, CA 94301
Phone (650) 324-1832

1555 East St
Ste 200
Redding, CA 96001
Phone (530) 229-0911

151 N Sunrise Ave
Ste 1205
Roseville, CA 95661
Phone (916) 780-0110

3315 Watt Ave
Sacramento, CA 95821
Phone (916) 481-0777

3838 California St
Rm 410
San Francisco, CA 94118
Phone (415) 751-1847

123 S San Mateo Dr
San Mateo, CA 94401
Phone (650) 343-4200

3883 Airway Dr
Ste 220
Santa Rosa, CA 95403
Phone (707) 521-7750

10200 Trinity Pkwy
Ste 101
Stockton, CA 95219
Phone (209) 323-3488

Interoperability endpoints

  • Direct secure messaging: zdenham643105@hisp.ehr.sutterhealth.org

Organizations & group practices 5

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.

NPI Registry JSON

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

{
    "created_epoch": "1521763200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780358400000",
    "number": "1427552454",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "659 BOULEVARD ST",
            "city": "DOVER",
            "state": "OH",
            "postal_code": "446222026",
            "telephone_number": "330-827-9225"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "659 BOULEVARD ST",
            "city": "DOVER",
            "state": "OH",
            "postal_code": "446222026",
            "telephone_number": "330-343-3311"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DENHAM",
        "first_name": "ZACHARY",
        "middle_name": "RYAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-23",
        "last_updated": "2026-06-02",
        "certification_date": "2026-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "OH",
            "license": "35.144134",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dover, OH

Sources for this page

Verify at the official NPI Registry.