Individual provider Active NPI

Michael Zamostny, D.O.

  • Internal Medicine Physician
  • Chillicothe, OH
National Provider Identifier
1659819928
Registry record updated Aug 31, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
34.013630 Issued in OH
Practice address
446 Hospital Rd
Chillicothe, OH 45601-9030
Phone
(740) 779-7070
NPI assigned
Feb 7, 2017
Last updated
Aug 31, 2022By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 31, 2022

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X TPOS436 FL
Internal Medicine Physician 207R00000X 0102207507 VA
Internal Medicine Physician 207R00000X 34.013630 OH Primary

Addresses

Primary practice location

446 Hospital Rd
Chillicothe, OH 45601-9030

Mailing address

446 Hospital Rd
Chillicothe, OH 45601-9030
Phone (740) 779-7500

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address adena@adena.medicity.net

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH, VA, TX, NY4 enrollments
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 4

Enrollment IDStateProvider typePAC IDDetails
I20200317001617 OH Practitioner - Internal Medicine 5799054300 Reassigns benefits to 3 organizations
I20220913003445 VA Practitioner - Internal Medicine 5799054300 Reassigns benefits to 1 organization
I20251005000104 TX Practitioner - Internal Medicine 5799054300 Reassigns benefits to 1 organization
I20260115003242 NY Practitioner - Internal Medicine 5799054300 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Usacs Integrated Acute Care Services of Ohio LLCGroup PAC ID 9032527221, 232 clinicians

Practice addresses (Care Compare)

100 Medical Ctr Dr
Springfield, OH 45504-2687
Phone (937) 523-1461

3000 Hospital Dr
Batavia, OH 45103-1921
Phone (513) 732-8215

3300 Mercy Health Blvd
Cincinnati, OH 45211-1103
Phone (513) 215-5000

500 Martha Jefferson Dr
Charlottesville, VA 22911-4668
Phone (434) 654-7147

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
82.93 of 100Reported as group
Quality
64.42
Promoting interoperability
99
Improvement activities
40
Cost
73.2

Merit-based Incentive Payment System (MIPS)

Final score
89.83 of 100Reported as group
Quality
78.11
Improvement activities
40
Cost
74.76

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
TPOS436FLMDInternal Medicine Physician
34.013630OHMDInternal Medicine Physician
0102207507VAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Usacs Integrated Acute Care Services of Ohio, LLC Internal Medicine CurrentSince May 2, 2025 Accepting new patients
Emergency Medicine Associates P.a., P.C. CurrentSince Nov 18, 2025 Accepting new patients
Adena Medical Group LLC Internal Medicine CurrentSince May 1, 2021 Accepting new patients
Apogee Medical Group Ohio Inc Internal Medicine CurrentSince Jun 1, 2020 Accepting new patients
Usacs Integrated Acute Care Services of Texas, PLLC Internal Medicine CurrentSince Jul 24, 2025 Accepting new patients
Emergency Medicine Associates P.a., P.C. Internal Medicine CurrentSince Nov 18, 2025 Accepting new patients
Port Emergency Medical Services, P.C. CurrentSince Feb 5, 2026 Accepting new patients
Fairfield Healthcare Professionals Inc Past Accepting new patients

Locations

327 Beach 19th St
Far Rockaway, NY 11691
Phone (718) 689-7640

200 Belle Terre Rd
Prt Jefferson, NY 11777
Phone (631) 474-6000

272 Hospital Rd
Chillicothe, OH 45601
Phone (740) 779-4275

550 Mirabeau St
Greenfield, OH 45123
Phone (937) 672-4128

1805 27th St
Portsmouth, OH 45662
Phone (740) 356-5000

100 Medical Center Dr
Springfield, OH 45504
Phone (937) 523-1000

100 Dawn Ln
Waverly, OH 45690
Phone (740) 947-2186

12340 State Route 104
Waverly, OH 45690
Phone (740) 941-5180

3501 Mills Ave
Austin, TX 78731
Phone (512) 324-1017

1401 Medical Pkwy
Cedar Park, TX 78613
Phone (512) 528-7000

260 Cully Dr
Kerrville, TX 78028
Phone (830) 258-7323

6565 Fannin St
Va Hospital, TX 77030
Phone (713) 394-6000

500 Martha Jefferson Dr
Charlottesvle, VA 22911
Phone (434) 654-7000

15225 Heathcote Blvd
Haymarket, VA 20169
Phone (571) 284-1000

Organizations & group practices 9

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.

Hospital & facility affiliations 6

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

NPI Registry JSON

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

{
    "created_epoch": "1486425600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1661904000000",
    "number": "1659819928",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "446 HOSPITAL RD",
            "city": "CHILLICOTHE",
            "state": "OH",
            "postal_code": "456019030",
            "telephone_number": "740-779-7500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "446 HOSPITAL RD",
            "city": "CHILLICOTHE",
            "state": "OH",
            "postal_code": "456019030",
            "telephone_number": "740-779-7070"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZAMOSTNY",
        "first_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-02-07",
        "last_updated": "2022-08-31",
        "certification_date": "2022-08-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "FL",
            "license": "TPOS436",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0102207507",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "34.013630",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "adena@adena.medicity.net",
            "affiliation": "N",
            "address_1": "446 Hospital Rd",
            "city": "Chillicothe",
            "state": "OH",
            "country_code": "US",
            "postal_code": "456019030",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Chillicothe, OH

Sources for this page

Verify at the official NPI Registry.