Individual provider Active NPI

Gregg Mastropolo, CAA

  • Anesthesiologist Assistant
  • Washington, DC
National Provider Identifier
1083663884
Registry record updated Mar 10, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiologist AssistantTaxonomy code 367H00000X
License
A000014 Issued in DC
Practice address
900 23Rd St NW
Washington, DC 20037-2342
Phone
(202) 823-4254
NPI assigned
May 9, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 10, 2021

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiologist Assistant 367H00000X A000014 DC Primary

Addresses

Primary practice location

900 23Rd St NW
Washington, DC 20037-2342

Mailing address

150 S Little Tor Rd
New City, NY 10956-3126
Phone (706) 888-2722

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, FL2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20120814000451 DC Practitioner - Anesthesiology Assistant 1153361209 Reassigns benefits to 4 organizations
I20250314000134 FL Practitioner - Anesthesiology Assistant 1153361209 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology Assistant
Education
Other, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1 Shircliff Way
Jacksonville, FL 32204-4748
Phone (904) 308-7300

653 W 8TH St
Jacksonville, FL 32209-6511
Phone (904) 244-1680

655 W 8TH St
Jacksonville, FL 32209-6511
Phone (940) 244-4218

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Associate of Arts

State licenses

LicenseStateTypeSpecialty
A000014DCMDAnesthesiologist Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Medical Group II LLC CurrentSince Dec 1, 2024 Accepting new patients
University of Florida Jacksonville Physicians, Inc. Current Accepting new patients
University of Florida Jacksonville Physicians Inc CurrentSince Mar 6, 2025 Accepting new patients
Washington Hospital Center Corp CurrentSince Jan 1, 2013 Accepting new patients
Medstar Medical Group Anesthesiology LLC CurrentSince Jun 1, 2018 Accepting new patients
Medical Faculty Associates, Inc CurrentSince Mar 1, 2021 Accepting new patients
Medstar Medical Group Anesthesiology LLC CurrentSince Jun 1, 2018 Accepting new patients
University of Florida Jacksonville Physicians, Inc. CurrentSince Mar 6, 2025 Accepting new patients
Medstar Medical Group II LLC CurrentSince Dec 1, 2024 Accepting new patients
Washington Hospital Center Corp Current Accepting new patients
Anesthesia Associates of Cincinnati, Inc Anesthesiologist Assistant Past Accepting new patients
Washington Hospital Center Corp Past Accepting new patients
Providence Health Services, Inc Anesthesiologist Assistant Past Accepting new patients
Regional Anesthesia Associates LLC Past Accepting new patients

Locations

110 Irving St NW
Washington, DC 20010
Phone (202) 877-2000

2041 Georgia Ave NW
Washington, DC 20060
Phone (202) 865-3785

900 23rd St NW
Washington, DC 20037
Phone (202) 715-4750

1145 19th St NW
Washington, DC 20036
Phone (202) 223-9040

1145 19th St NW
Ste 311
Washington, DC 20036
Phone (202) 429-2401

1 Shircliff Way
Jacksonville, FL 32204
Phone (904) 332-0414

7503 Surratts Rd
Clinton, MD 20735
Phone (301) 868-8000

Organizations & group practices 14

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.

View all 14

Hospital & facility affiliations 2

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": "1147132800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1615334400000",
    "number": "1083663884",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 S LITTLE TOR RD",
            "city": "NEW CITY",
            "state": "NY",
            "postal_code": "109563126",
            "telephone_number": "706-888-2722",
            "fax_number": "845-230-7677"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "900 23RD ST NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200372342",
            "telephone_number": "202-823-4254"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTROPOLO",
        "first_name": "GREGG",
        "credential": "CAA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-09",
        "last_updated": "2021-03-10",
        "certification_date": "2021-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367H00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiologist Assistant",
            "state": "DC",
            "license": "A000014",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 10, 2021; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.