Peter Leong, M.D.

Primary specialty

Pain Medicine (Anesthesiology) PhysicianTaxonomy code 207LP2900X

License

012921 Issued in ME

Practice address

144 State St
Anesthesia Department
Portland, ME 04101-3776

Phone

(207) 879-3385

NPI assigned

Jul 19, 2006

Sex

Male

Sole proprietor

No

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

Not listed in the public Medicare enrollment file

Eligible to order & refer

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

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Acadia Healthcare, Inc

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Bangor, ME
  • NPI 1568477297
  NPD (past)
• Maine Anesthesiology

  • Pain Medicine (Anesthesiology) Physician
  • Portland, ME
  • NPI 1992723340
  NPD (past)
• Mercy Hospital

  • General Acute Care Hospital
  • Portland, ME
  • NPI 1629078712
  NPD (past)
• Sebasticook Valley Health

  • Rural Health Clinic/Center
  • Unity, ME
  • NPI 1427181486
  NPD (past)
• Millennium Anesthesia PC

  • Anesthesiology Physician
  • Falmouth, MA
  • NPI 1154340305
  NPD (past)

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

{
    "created_epoch": "1153267200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1083634646",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 676",
            "address_2": "MAINE ANESTHESIOLOGY",
            "city": "LEWISTON",
            "state": "ME",
            "postal_code": "042430676",
            "telephone_number": "800-720-1664"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "144 STATE ST",
            "address_2": "ANESTHESIA DEPARTMENT",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041013776",
            "telephone_number": "207-879-3385"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEONG",
        "first_name": "PETER",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-19",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "ME",
            "license": "012921",
            "primary": false
        },
        {
            "code": "207LP2900X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pain Medicine",
            "state": "ME",
            "license": "012921",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Leonard J Brennan, DMD, LLC
• Amy Leonard, LMSW-CC
• Hannah Leonard, CCC-SLP
• Pamela Mary Leone, PH.D.
• James Joseph Leonetti, PHARMACIST
• Kerry T Les, RN, WHCNP
• William Hart Leschey III, PHD
• Leslie Connolly, P.a.
• Leslie R. Gass, D.O., Inc.
• Emily Leslie, LCPC-C

• Pain Medicine (Anesthesiology) Physician in Portland, ME
• Providers in Portland, ME by specialty
• Pain Medicine (Anesthesiology) Physician in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.