Individual provider Active NPI

Natasha Elise Weiser, MD, PHD

  • Clinical Pathology/Laboratory Medicine Physician
  • New Haven, CT
National Provider Identifier
1740742568
Registry record updated Feb 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Pathology/Laboratory Medicine PhysicianTaxonomy code 207ZP0105X
License
83813 Issued in CT
Practice address
333 Cedar St
New Haven, CT 06510-3206
Phone
(203) 737-4668
NPI assigned
Apr 1, 2019
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X A176713 CA
Clinical Pathology/Laboratory Medicine Physician 207ZP0105X 83813 CT Primary

Addresses

Primary practice location

333 Cedar St
New Haven, CT 06510-3206

Mailing address

PO Box 208035
New Haven, CT 06520-8035
Phone (203) 737-4668

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
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
I20260305000298 CT Practitioner - Pathology 8123408796 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
University of Michigan Medical School, 2019
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

50 Division St
New Haven, CT 06511-1936

Merit-based Incentive Payment System (MIPS)

Final score
88.53 of 100Reported as group
Quality
87.08
Promoting interoperability
100
Improvement activities
40
Cost
69.51

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A176713CAMDAnatomic Pathology & Clinical Pathology Physician
83813CTMDClinical Pathology/Laboratory Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Yale University CurrentSince Feb 5, 2026 Accepting new patients
Stanford Health Care CurrentSince Jun 1, 2022 Accepting new patients
Stanford Health Care Anatomic Pathology & Clinical Pathology CurrentSince Jun 1, 2022 Accepting new patients
Yale University CurrentSince Feb 5, 2026 Accepting new patients
LPCH Medical Group Div of Lucile CurrentSince Jun 1, 2022 Accepting new patients
Stanford Health Care Anatomic Pathology & Clinical Pathology Current Accepting new patients

Locations

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

300 Pasteur Dr
#L235
Stanford, CA 94305
Phone (650) 723-5252

333 Cedar St
New Haven, CT 06510
Phone (203) 432-4771

20 York St
North Haven, CT 06510
Phone (203) 688-2433

Organizations & group practices 6

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.

NPI Registry JSON

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

{
    "created_epoch": "1554076800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770076800000",
    "number": "1740742568",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 208035",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065208035",
            "telephone_number": "203-737-4668"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 CEDAR ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103206",
            "telephone_number": "203-737-4668"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WEISER",
        "first_name": "NATASHA",
        "middle_name": "ELISE",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-04-01",
        "last_updated": "2026-02-03",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "CA",
            "license": "A176713",
            "primary": false
        },
        {
            "code": "207ZP0105X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology/Laboratory Medicine",
            "state": "CT",
            "license": "83813",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.