Nicholas Markim Siegel, RD, LDN

Primary specialty

Registered DietitianTaxonomy code 133V00000X

License

LDN9216 Issued in MA

Practice address

200 Boylston St # A309
Chestnut Hill, MA 02467-2012

Phone

(617) 277-5000

NPI assigned

Sep 21, 2026

Last updated

Sep 21, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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

{
    "created_epoch": "1789948800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789948800000",
    "number": "1174435366",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21 PITMAN ST",
            "city": "SOMERVILLE",
            "state": "MA",
            "postal_code": "021432516"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 BOYLSTON ST # A309",
            "city": "CHESTNUT HILL",
            "state": "MA",
            "postal_code": "024672012",
            "telephone_number": "617-277-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEGEL",
        "first_name": "NICHOLAS",
        "middle_name": "MARKIM",
        "credential": "RD, LDN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-09-21",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "MA",
            "license": "LDN9216",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Karen M Sherritt, M.D.
• Lester S. Shoap, MD
• Matthew M Shuster, M.D.
• Jennifer Marie Siedlecki, PHARMD
• Faye E. Siegel, O.D.
• Brooke Christine Sikora, M.D.
• Jeffrey E Silver, MD
• Esther H. Silverman, LICSW
• Harley Anne Simeone, M.D.
• Portia Elizabeth Sirinek, M.D.

• Registered Dietitian in Chestnut Hill, MA
• Providers in Chestnut Hill, MA by specialty
• Registered Dietitian in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.