Individual provider Active NPI

Leslie S. Eldeiry, MD

  • Endocrinology, Diabetes & Metabolism Physician
  • Boston, MA
National Provider Identifier
1801805221
Registry record updated Jan 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
222194 Issued in MA
Practice address
133 Brookline Ave FL 9
Boston, MA 02215-3904
Phone
(617) 421-1380
Fax
(617) 421-2707
NPI assigned
Aug 5, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 5, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Endocrinology, Diabetes & Metabolism Physician 207RE0101X 222194 MA Primary

Addresses

Primary practice location

133 Brookline Ave FL 9
Boston, MA 02215-3904

Mailing address

133 Brookline Ave FL 9
Boston, MA 02215-3904
Phone (617) 421-1380

Other practice location 1

243 Charles St
Boston, MA 02114-3002
Phone (617) 573-4115

Other identifiers 6

IdentifierTypeStateIssuer
0033556OtherMANEIGHBORHOOD HEALTH PLAN
AA16502OtherMAHARVARD PILGRIM
469784OtherMATUFTS HEALTH PLAN
2088525MedicaidMA
8039502OtherMACIGNA
J27950OtherMABLUE CROSS

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address leldeirymd14847@direct.atrius.masshiway.net

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
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 1

Enrollment IDStateProvider typePAC IDDetails
I20041019001087 MA Practitioner - Endocrinology 6709847262 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Endocrinology
Education
University of Miami, LM Miller School of Medicine, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Reliant Medical Group IncGroup PAC ID 5597755322, 638 clinicians
Atrius Health IncGroup PAC ID 4789588641, 1,214 clinicians
Massachusetts Eye and Ear Associates, IncGroup PAC ID 4486540275, 430 clinicians

Practice addresses (Care Compare)

1 Eaton PL
Worcester, MA 01608-1232
Phone (508) 556-5400

100 2ND Ave
Needham, MA 02494-2809
Phone (781) 726-4800

1250 Hancock St
Quincy, MA 02169-4339
Phone (617) 740-0600

133 Brookline Ave
Boston, MA 02215-3904
Phone (617) 421-1000

142 Berkeley St
Boston, MA 02116-5100
Phone (617) 859-5000

2 Technology Park Dr
Suite a
Bourne, MA 02532-8341
Phone (508) 743-9543

20 Wall St
Burlington, MA 01803-4758
Phone (781) 221-2500

21 Bristol Dr
South Easton, MA 02375-1199
Phone (774) 302-5700

228 Billerica Rd
Chelmsford, MA 01824-3604
Phone (978) 250-6000

243 Charles St
Boston, MA 02114-3002
Phone (617) 523-7900

291 Independence Dr
Chestnut Hill, MA 02467-3628
Phone (617) 325-2800

31 Pine St
Suite 300
Norfolk, MA 02056-1680
Phone (781) 493-7200

36 Shops at 5 Way
Plymouth, MA 02360-2677
Phone (774) 608-3700

40 Holland St
Somerville, MA 02144-2705
Phone (617) 629-6000

77 Herrick St
Suite 101
Beverly, MA 01915-2734
Phone (978) 927-4110

90 Libbey Industrial Pkwy
Suite 201
Weymouth, MA 02189-3157
Phone (781) 682-0606

Hospital & facility affiliations

  • Massachusetts Eye and Ear Infirmary - Hospital, Boston, MA, CCN 220075
  • Umass Memorial Medical Center/University Campus Hospital, Worcester, MA, CCN 220163
  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
222194MAMDEndocrinology, Diabetes & Metabolism Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Atrius Health, Inc. Endocrinology, Diabetes & Metabolism CurrentSince Oct 1, 2004 Accepting new patients
Reliant Medical Group, Inc Endocrinology, Diabetes & Metabolism CurrentSince Jul 14, 2024 Accepting new patients
Massachusetts Eye and Ear Associates, Inc. CurrentSince Jan 1, 2026 Accepting new patients

Locations

77 Herrick St
Ste 101
Beverly, MA 01915
Phone (978) 232-7115

147 Milk St
Fl 9
Boston, MA 02109
Phone (617) 559-8051

133 Brookline Ave
Fl 9
Boston, MA 02215
Phone (617) 421-1091

243 Charles St
Boston, MA 02114
Phone (617) 523-7900

133 Brookline Ave
Boston, MA 02215
Phone (617) 421-1000

24 Newton St
Southborough, MA 01772
Phone (508) 460-3190

1 Eaton Pl
Worcester, MA 01608
Phone (508) 363-6064

5 Neponset St
Worcester, MA 01606
Phone (508) 595-2300

Organizations & group practices 3

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1154736000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767571200000",
    "number": "1801805221",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "133 BROOKLINE AVE FL 9",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022153904",
            "telephone_number": "617-421-1380",
            "fax_number": "617-421-2707"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "133 BROOKLINE AVE FL 9",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022153904",
            "telephone_number": "617-421-1380",
            "fax_number": "617-421-2707"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "243 Charles St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021143002",
            "country_code": "US",
            "telephone_number": "617-573-4115",
            "fax_number": "617-573-6845",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ELDEIRY",
        "first_name": "LESLIE",
        "middle_name": "S.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-08-05",
        "last_updated": "2026-01-05",
        "certification_date": "2026-01-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MA",
            "license": "222194",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NEIGHBORHOOD HEALTH PLAN",
            "identifier": "0033556",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HARVARD PILGRIM",
            "identifier": "AA16502",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TUFTS HEALTH PLAN",
            "identifier": "469784",
            "state": "MA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2088525",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA",
            "identifier": "8039502",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS",
            "identifier": "J27950",
            "state": "MA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "leldeirymd14847@direct.atrius.masshiway.net",
            "affiliation": "N",
            "address_1": "133 Brookline Ave Fl 9",
            "city": "Boston",
            "state": "MA",
            "country_code": "US",
            "postal_code": "022153904",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.