Individual provider Active NPI

Daniel Marquez Merrill, M.D.

  • Anesthesiology Physician
  • Bethesda, MD
National Provider Identifier
1942201009
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
D0036458 Issued in MD
Practice address
8901 Wisconsin Ave
National Naval Medical Center
Bethesda, MD 20889-0001
Phone
(301) 295-4455
Fax
(301) 295-5063
NPI assigned
Aug 10, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X D0036458 MD Primary

Addresses

Primary practice location

8901 Wisconsin Ave
National Naval Medical Center
Bethesda, MD 20889-0001

Mailing address

4 Country Woods CT
Gaithersburg, MD 20878-1144
Phone (301) 330-2652

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
D0036458MDMDAnesthesiology Physician

NPI Registry JSON

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

{
    "created_epoch": "1123632000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1942201009",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4 COUNTRY WOODS CT",
            "city": "GAITHERSBURG",
            "state": "MD",
            "postal_code": "208781144",
            "telephone_number": "301-330-2652",
            "fax_number": "888-657-1941"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 WISCONSIN AVE",
            "address_2": "NATIONAL NAVAL MEDICAL CENTER",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001",
            "telephone_number": "301-295-4455",
            "fax_number": "301-295-5063"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERRILL",
        "first_name": "DANIEL",
        "middle_name": "MARQUEZ",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-10",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MD",
            "license": "D0036458",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Bethesda, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.