Heather Siobhan Calderwood, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

67340 Issued in CA

Practice address

300 Pasteur Dr
Stanford, CA 94305-2200

Phone

(650) 723-4000

NPI assigned

Jun 17, 2024

Last updated

Mar 9, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in TX

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

TMH Physician Associates PLLCGroup PAC ID 4486711744, 1,881 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Stanford Health Care Hospital, Stanford, CA, CCN 050441

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

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.

• TMH Physician Associates PLLC

  • Ophthalmology Physician
  • Houston, TX
  • NPI 1275779225
  Medicare reassignment Care Compare group NPD
• Houston Methodist Specialty Physicians

  • Otolaryngology Physician
  • Houston, TX
  • NPI 1902614332

  Thoracic Surgery (Cardiothoracic Vascular Surgery)

  Medicare reassignment NPD
• TMH Physician Associates PLLC

  • Orthopaedic Surgery Physician
  • Spring, TX
  • NPI 1043061351
  NPD
• TMH Physician Associates PLLC

  dba TMHPO Orthopedics Department

  • Orthopaedic Surgery Physician
  • Pearland, TX
  • NPI 1386827442
  NPD (past)

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

• Stanford Health Care

  dba SHC Radiation Oncology

  • Radiation Oncology Physician
  • Pleasanton, CA
  • NPI 1124561758

  Hospital

  Care Compare affiliation
• Stanford Health Care

  dba Stanford Health Care Emeryville 5800

  • General Acute Care Hospital
  • Emeryville, CA
  • NPI 1275076325
  Care Compare affiliation
• Stanford Health Care

  dba Stanford Health Care Emeryville 6121

  • General Acute Care Hospital
  • Emeryville, CA
  • NPI 1285177337
  Care Compare affiliation
• Stanford Health Care

  dba Stanford Medical Center A Trade Name for Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1437292927
  Care Compare affiliation
• Stanford Health Care

  dba Stanford Health Care Pleasanton 5565

  • General Acute Care Hospital
  • Pleasanton, CA
  • NPI 1467990465
  Care Compare affiliation
• Stanford Health Care

  dba Stanford Medical Center A Trade Name for Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1871543215
  Care Compare affiliation
• Stanford Life Flight

  • Air Ambulance
  • Stanford, CA
  • NPI 1114063203

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1718582400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773014400000",
    "number": "1033952270",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6565 Fannin St",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770302703",
            "country_code": "US",
            "telephone_number": "713-790-3311",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALDERWOOD",
        "first_name": "HEATHER",
        "middle_name": "SIOBHAN",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2024-06-17",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "67340",
            "primary": true
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "TX",
            "license": "PA18400",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Heather Cadenhead, MD, FRCPC
• Tene Aneka Cage, MD
• Christopher Pasciullo Cahill, MD
• Erica Pasciullo Cahill, MD
• Bertan Deniz Cakir, MD
• Laurel Calderwood, MS, CGC
• Jillian Scott Caldwell, DO
• Nolan John Caldwell, M.D.
• Christopher Calkins, MD
• Mallory Erin Frances Callahan, NP

• Physician Assistant in Stanford, CA
• Providers in Stanford, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 9, 2026; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.