Clark Timothy Johnson, MD

Primary specialty

Maternal & Fetal Medicine PhysicianTaxonomy code 207VM0101X

License

MD490154 Issued in PA

Practice address

100 S 2ND St Ste 4B
Harrisburg, PA 17101-2546

Phone

(717) 231-8472

Fax

(717) 231-8490

NPI assigned

May 6, 2009

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in MD, PA2 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 2

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: cjohnson94534@direct.aahs.org
• Direct secure messaging: cjohnson156292@direct.umm.edu
• Direct secure messaging: cjohnson33056@direct.hopkinsmedicine.org

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.

• Pinnacle Health Medical Services

  • Family Medicine Physician
  • Harrisburg, PA
  • NPI 1932143427

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Johns Hopkins University

  • Pain Medicine (Anesthesiology) Physician
  • Baltimore, MD
  • NPI 1922008549
  Medicare reassignment NPD
• Luminis Health Medical Group, LLC

  • Maternal & Fetal Medicine Physician
  • Annapolis, MD
  • NPI 1073580205
  Medicare reassignment NPD
• Sinai Hospital of Baltimore Inc

  • Surgical Critical Care Physician
  • Baltimore, MD
  • NPI 1043235666
  Medicare reassignment NPD
• Union Hospital of Cecil County

  • Internal Medicine Physician
  • Elkton, MD
  • NPI 1124067848

  Obstetrics & Gynecology

  Medicare reassignment NPD
• University of Maryland St. Joseph Medical Group, LLC

  • General Practice Physician
  • Towson, MD
  • NPI 1770836785
  Medicare reassignment NPD
• Susquehanna Physician Services

  • Obstetrics & Gynecology Physician
  • Williamsport, PA
  • NPI 1770719882
  Medicare reassignment
• Pinnacle Health Medical Services

  • Gastroenterology Physician
  • Mechanicsburg, PA
  • NPI 1295552073
  NPD
• Pinnacle Health Medical Services

  • Surgery Physician
  • Mechanicsburg, PA
  • NPI 1598439580
  NPD
• Johns Hopkins University

  • Obstetrics & Gynecology Physician
  • Lutherville, MD
  • NPI 1255315339
  NPD
• Johns Hopkins University

  • Ophthalmology Physician
  • Belcamp, MD
  • NPI 1376342774
  NPD
• Luminis Health Medical Group, LLC

  • Cardiovascular Disease Physician
  • Easton, MD
  • NPI 1558810176
  NPD

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

{
    "created_epoch": "1241568000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751846400000",
    "number": "1497989305",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 S 2ND ST STE 4B",
            "city": "HARRISBURG",
            "state": "PA",
            "postal_code": "171012546",
            "telephone_number": "717-231-8472",
            "fax_number": "717-231-8490"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 S 2ND ST STE 4B",
            "city": "HARRISBURG",
            "state": "PA",
            "postal_code": "171012546",
            "telephone_number": "717-231-8472",
            "fax_number": "717-231-8490"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "600 N Wolfe Street Phipps 279",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212870001",
            "country_code": "US",
            "telephone_number": "410-955-6710",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JOHNSON",
        "first_name": "CLARK",
        "middle_name": "TIMOTHY",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-05-06",
        "last_updated": "2025-07-07",
        "certification_date": "2025-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MD",
            "license": "D76370",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "PA",
            "license": "MD490154",
            "primary": false
        },
        {
            "code": "207VM0101X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": "PA",
            "license": "MD490154",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Anisha Johnson-Anthony
• Amanda Chiana Johnson, MS
• Candace Johnson
• Candace Nichole Johnson, MS,NCC,LPC
• Chasity Johnson
• Deborah Gale Johnson, LSW
• Douglas Johnson, CRNA
• Emily Johnson, RN
• Eric Johnson, CADC,B.S. B.A.
• Jessica M Johnson

• Maternal & Fetal Medicine Physician in Harrisburg, PA
• Providers in Harrisburg, PA by specialty
• Maternal & Fetal Medicine Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2025; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.