Individual provider Active NPI

Mary G Diana, MD

  • Obstetrics & Gynecology Physician
  • Westport, CT
National Provider Identifier
1962445684
Registry record updated Dec 8, 2020
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
56749 Issued in CT
Practice address
12 Avery Place
Avery Center for Obstetrics & Gynecology
Westport, CT 06880
Phone
(203) 227-5125
NPI assigned
Jun 13, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 8, 2020

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 56749 CT Primary
Obstetrics & Gynecology Physician 207V00000X 200058 NY

Addresses

Primary practice location

12 Avery Place
Avery Center for Obstetrics & Gynecology
Westport, CT 06880

Mailing address

16 Georgetown N
Greenwich, CT 06831-5235
Phone (845) 325-6127

Other identifiers 3

IdentifierTypeStateIssuer
0667910001OtherNYDME
01659383MedicaidNY
P00413156OtherNYMEDICARE RAILROAD

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, CT2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20060105000531 NY Practitioner - Obstetrics/Gynecology 5698798650 Reassigns benefits to 3 organizations
I20171122000326 CT Practitioner - Obstetrics/Gynecology 5698798650 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Columbia University College of Physicians and Surgeons, 1992
Medicare assignment
May accept Medicare assignment
Group practices
Montefiore Medical CenterGroup PAC ID 3779496021, 2,809 clinicians
Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

111 E 210TH St
Bronx, NY 10467-2401
Phone (866) 633-8255

5 Perryridge Rd
Greenwich, CT 06830-4608
Phone (203) 863-3000

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
200058NYMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Yale University CurrentSince Nov 6, 2025 Accepting new patients
Greenwich Hospital CurrentSince Dec 18, 2023 Accepting new patients
Crystal Run Healthcare Physicians LLP CurrentSince Feb 7, 2022 Accepting new patients
Greenwich Hospital CurrentSince Dec 18, 2023 Accepting new patients
Crystal Run Healthcare Physicians LLP CurrentSince Feb 7, 2022 Accepting new patients
Obhg Connecticut PC Obstetrics & Gynecology CurrentSince May 1, 2023 Accepting new patients
Yale University Obstetrics & Gynecology CurrentSince Nov 6, 2025 Accepting new patients
OBGYN Hospitalist Medical Services of New York, P.C. Obstetrics & Gynecology CurrentSince Feb 1, 2024 Accepting new patients
Montefiore Medical Center Obstetrics & Gynecology CurrentSince Jun 14, 2024 Accepting new patients
Montefiore Medical Center CurrentSince Jun 14, 2024 Accepting new patients
Garnet Health Medical Center Past Accepting new patients
Avery Center for OBGYN PC Obstetrics & Gynecology PastSince Jan 4, 2021 Accepting new patients
New York City Health and Hospitals Corporation Past Accepting new patients
Montefiore Medical Center Past Accepting new patients
Planned Parenthood of the Southern Finger Lakes Inc. Past Accepting new patients

Locations

24 Hospital Ave
Danbury, CT 06810
Phone (203) 739-7118

5 Perryridge Rd
Greenwich, CT 06830
Phone (203) 661-5330

800 Howard Ave
New Haven, CT 06519
Phone (203) 785-2140

789 Howard Ave
North Haven, CT 06519
Phone (203) 688-2471

34 Maple St
Norwalk, CT 06850
Phone (203) 852-2000

111 E 210th St
Bronx, NY 10467

670 Stoneleigh Ave
Carmel, NY 10512
Phone (845) 230-4721

300 Crystal Run Rd
Middletown, NY 10941
Phone (845) 692-6999

728 N Main St
New Square, NY 10977
Phone (845) 354-9301

2210 Troy Schenectady Rd
Schenectady, NY 12309
Phone (518) 346-6400

255 Lafayette Ave
Suffern, NY 10901
Phone (845) 357-7830

Networks

  • Healthfirst Medicare Network H1722
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H9678

Interoperability endpoints

  • Direct secure messaging: mdiana@direct.health-quest.org

Organizations & group practices 15

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 15

NPI Registry JSON

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

{
    "created_epoch": "1150156800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1607385600000",
    "number": "1962445684",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "16 GEORGETOWN N",
            "city": "GREENWICH",
            "state": "CT",
            "postal_code": "068315235",
            "telephone_number": "845-325-6127"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12 AVERY PLACE",
            "address_2": "AVERY CENTER FOR OBSTETRICS & GYNECOLOGY",
            "city": "WESTPORT",
            "state": "CT",
            "postal_code": "06880",
            "telephone_number": "203-227-5125"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIANA",
        "first_name": "MARY",
        "middle_name": "G",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-13",
        "last_updated": "2020-12-08",
        "certification_date": "2020-12-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CT",
            "license": "56749",
            "primary": true
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "200058",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DME",
            "identifier": "0667910001",
            "state": "NY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01659383",
            "state": "NY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE RAILROAD",
            "identifier": "P00413156",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Westport, CT

Sources for this page

Verify at the official NPI Registry.