Organization Active NPI

Maryland Post Acute Medical Services 1 PC

  • Hospitalist Physician
  • Frederick, MD
National Provider Identifier
1437688348
Registry record updated Sep 30, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
Legal business name
MARYLAND POST ACUTE MEDICAL SERVICES 1 PC
Practice address
30 North PL
Frederick, MD 21701-6200
Phone
(301) 695-6618
NPI assigned
Jun 6, 2017
Last updated
Sep 30, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 30, 2026

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

Authorized official

Name
Dr. Stephen Holtzclaw, MD
Title
President
Phone
(865) 693-1000

Specialties & licenses 7

Specialty (taxonomy)CodeLicenseStatePrimary
Psychologist 103T00000X NU
Social Worker 104100000X NU
Clinical Social Worker 1041C0700X NU
Hospitalist Physician 208M00000X NU Primary
Nurse Practitioner 363L00000X NU
Adult Health Nurse Practitioner 363LA2200X NU
Family Nurse Practitioner 363LF0000X NU

Addresses

Primary practice location

30 North PL
Frederick, MD 21701-6200

Mailing address

265 Brookview Centre Way Ste 400
Knoxville, TN 37919-4052
Phone (865) 693-1000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20180724001255 MD Part B Supplier - Clinic/Group Practice 5799059523 Receives reassigned benefits from 1 practitioner
Practice locations: Frederick, MD

National Provider Directory

National Provider Directory

Locations

2 Colonial Manor Ct
Elkton, MD 21921
Phone (410) 498-7721

Practitioners & affiliated clinicians

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1496707200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790726400000",
    "number": "1437688348",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "265 BROOKVIEW CENTRE WAY STE 400",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "379194052",
            "telephone_number": "865-693-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "30 NORTH PL",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217016200",
            "telephone_number": "301-695-6618"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MARYLAND POST ACUTE MEDICAL SERVICES 1 PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2017-06-06",
        "last_updated": "2026-09-30",
        "certification_date": "2026-09-30",
        "status": "A",
        "authorized_official_last_name": "HOLTZCLAW",
        "authorized_official_first_name": "STEPHEN",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "865-693-1000",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "NU",
            "license": null,
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "NU",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Frederick, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.