NPIMap

Organization Active NPI

Whittier Medical Associates

  • Family Medicine Physician
  • Haverhill, MA
National Provider Identifier
1558401760
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
Legal business name
WHITTIER MEDICAL ASSOCIATES
Practice address
62 Brown St
Suite 200
Haverhill, MA 01830-6700
Phone
(978) 521-8377
Fax
(978) 521-3689
NPI assigned
Feb 7, 2007
Last updated
Sep 11, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Authorized official

Name
Dr. Peter L Rees, MDNPI 1104814870
Title
Partner
Phone
(978) 521-8377

Authorized official NPPES reports the official by name only. The link goes to the one practitioner with that name whose NPPES practice address or phone number is this organization’s.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X Primary
Internal Medicine Physician 207R00000X

Addresses

Primary practice location

62 Brown St
Suite 200
Haverhill, MA 01830-6700

Mailing address

62 Brown St
Suite 200
Haverhill, MA 01830-6700
Phone (978) 521-8377

Other identifiers 1

IdentifierTypeStateIssuer
9729241MedicaidMA

National Provider Directory

National Provider Directory

Locations

62 Brown St
Ste 302
Haverhill, MA 01830
Phone (978) 521-8377

Practitioners & affiliated clinicians

Practitioners 4

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1170806400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1558401760",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "62 BROWN ST",
            "address_2": "SUITE 200",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306700",
            "telephone_number": "978-521-8377",
            "fax_number": "978-521-3689"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "62 BROWN ST",
            "address_2": "SUITE 200",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306700",
            "telephone_number": "978-521-8377",
            "fax_number": "978-521-3689"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WHITTIER MEDICAL ASSOCIATES",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-02-07",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "REES",
        "authorized_official_first_name": "PETER",
        "authorized_official_middle_name": "L",
        "authorized_official_title_or_position": "PARTNER",
        "authorized_official_telephone_number": "978-521-8377",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9729241",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Haverhill, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.