Nathan Yockey Weltman, MD PHD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

ME144300 Issued in FL

Practice address

75 Francis St
Boston, MA 02115

Phone

(617) 732-5500

NPI assigned

Mar 31, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in FL, MT, DC, MI4 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

Specialty

Anesthesiology

Education

Sanford School of Medicine of University of South Dakota, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Northstar Anesthesia of Virginia, LLCGroup PAC ID 6608268826, 407 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

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 and National Provider Directory roles.

• Northstar Anesthesia of Virginia, LLC

  • Anesthesiology Physician
  • Alexandria, VA
  • NPI 1194488791

  DC

  Medicare reassignment Care Compare group NPD
• US Anesthesia Partners of Florida Inc.

  • Anesthesiology Physician
  • Maitland, FL
  • NPI 1518910520
  Medicare reassignment NPD
• U S Anesthesia Partners of Montana P C

  • Anesthesiology Physician
  • Billings, MT
  • NPI 1588359855
  NPD

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

• Inova Health Care Services

  • Rehabilitation Hospital Unit
  • Falls Church, VA
  • NPI 1588795462
  Care Compare affiliation
• Inova Health Care Services

  • General Acute Care Hospital
  • Falls Church, VA
  • NPI 1831220714
  Care Compare affiliation

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

{
    "created_epoch": "1427760000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785456000000",
    "number": "1528453255",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 Orleans St Rm 6220",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212870010",
            "country_code": "US",
            "telephone_number": "410-955-7615",
            "fax_number": "410-955-9149",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WELTMAN",
        "first_name": "NATHAN",
        "middle_name": "YOCKEY",
        "name_prefix": "Dr.",
        "credential": "MD PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-03-31",
        "last_updated": "2026-07-31",
        "certification_date": "2026-07-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "MD",
            "license": null,
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "SD",
            "license": "0220",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MA",
            "license": "278207",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "FL",
            "license": "ME144300",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ann K Welsh, M.D.
• Katherine P Welsh, LICSW
• Laura Welsh, M.D.
• Katherine Irene Welter, NP
• Madison Welter
• Francine K Welty, M.D.
• Adam Lawrence Welu, MD
• Donghai Wen, MD
• Emily Tzu-Yi Wen
• Ethan Shichao Wen, MD

• Anesthesiology Physician in Boston, MA
• Providers in Boston, MA by specialty
• Anesthesiology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 31, 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.