NPIMap

Individual provider Active NPI

Margaret Mary Tolbert, NP

  • Adult Health Nurse Practitioner
  • Stanford, CA
National Provider Identifier
1124018726
Registry record updated Apr 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Health Nurse PractitionerTaxonomy code 363LA2200X
License
RN10026296 Issued in MA
Practice address
300 Pasteur Dr
Stanford, CA 94305-2200
Phone
(650) 723-4000
NPI assigned
Oct 25, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 28, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Adult Health Nurse Practitioner 363LA2200X 4704229115 MI
Adult Health Nurse Practitioner 363LA2200X RN10026296 MA Primary
Nurse Practitioner 363L00000X 20771 CA
Adult Health Nurse Practitioner 363LA2200X 20771 CA

Addresses

Primary practice location

300 Pasteur Dr
Stanford, CA 94305-2200

Mailing address

PO Box 24520
New York, NY 10087-3720
Phone (781) 744-8085

Other practice location 1

41 Mall Rd
Burlington, MA 01805-0001
Phone (781) 744-8000

Other names 1

  • Margaret Mary Folk Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, MA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20150129001193 CA Practitioner - Nurse Practitioner 6800015173
I20251229002590 MA Practitioner - Nurse Practitioner 6800015173 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

47 Middlesex Tpke
Burlington, MA 01803-4945
Phone (781) 365-5999

500 Merrimack St
Lawrence, MA 01843-1981
Phone (978) 557-8900

Hospital & facility affiliations

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
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
20771CAMDSpeech-Language Pathologist
RN10026296MAMDAdult Health Nurse Practitioner
4704229115MIMDAdult Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Mass General Brigham Community Physicians Inc. CurrentSince Dec 29, 2025 Accepting new patients
Stanford Health Care Current Accepting new patients
Mass General Brigham Community Physicians Inc CurrentSince Dec 29, 2025 Accepting new patients
Mass General Brigham Community Physicians Inc. Past Accepting new patients

Locations

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

47 Middlesex Tpke
Burlington, MA 01803
Phone (857) 282-8100

500 Merrimack St
Lawrence, MA 01843
Phone (978) 557-8800

Organizations & group practices 7

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.

Hospital & facility affiliations 12

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": "1130198400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777334400000",
    "number": "1124018726",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 24520",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100873720",
            "telephone_number": "781-744-8085"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "41 Mall Rd",
            "address_purpose": "LOCATION",
            "city": "Burlington",
            "state": "MA",
            "postal_code": "018050001",
            "country_code": "US",
            "telephone_number": "781-744-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TOLBERT",
        "first_name": "MARGARET",
        "middle_name": "MARY",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-10-25",
        "last_updated": "2026-04-28",
        "certification_date": "2026-04-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "MI",
            "license": "4704229115",
            "primary": false
        },
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "MA",
            "license": "RN10026296",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "20771",
            "primary": false
        },
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "CA",
            "license": "20771",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARGARET",
            "last_name": "FOLK",
            "middle_name": "MARY",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Stanford, CA

Sources for this page

Verify at the official NPI Registry.