Individual provider Active NPI

John Masek, CRNA

  • Certified Registered Nurse Anesthetist
  • Philadelphia, PA
National Provider Identifier
1740206705
Registry record updated Nov 9, 2007
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
310215L Issued in PA
Practice address
800 Spruce Street
Philadelphia, PA 19107-6130
Phone
(215) 829-5664
NPI assigned
Jul 14, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 9, 2007

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X 310215L PA Primary

Addresses

Primary practice location

800 Spruce Street
Philadelphia, PA 19107-6130

Mailing address

408 Denford Way
Downingtown, PA 19335-3140
Phone (610) 518-3397

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20050628000843 PA Practitioner - Certified Registered Nurse Anesthetist (Crna) 5193761385 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Temple University School of Medicine, 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

701 E Marshall St
West Chester, PA 19380-4412
Phone (610) 431-5000

Hospital & facility affiliations

  • Chester County Hospital Hospital, West Chester, PA, CCN 390179

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
310215LPAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Clinical Care Associates of the University of CurrentSince Jul 1, 2021 Accepting new patients
Clinical Care Associates of the University of Pennsylvania Health CurrentSince Jul 1, 2021 Accepting new patients
Clinical Care Associates of the University of Pennsylvania Health Current Accepting new patients
Associates in Anesthesia Past Accepting new patients
Associates in Anesthesia, Inc. PastSince Mar 30, 2026 Accepting new patients

Locations

701 E Marshall St
West Chester, PA 19380
Phone (610) 431-5000

701 E Marshall St
#141
West Chester, PA 19380
Phone (610) 248-5831

800 Spruce St
William Penn Annex West, PA 19107
Phone (215) 829-3867

777 Township Line Rd
Ste 200
Yardley, PA 19067
Phone (215) 860-0775

Interoperability endpoints

  • FHIR API: https://fhir-myrecord.cerner.com/r4/0d26bd04-9128-4f58-8e6d-ffda5cd00f89/

Organizations & group practices 5

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 1

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": "1152835200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1194566400000",
    "number": "1740206705",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "408 DENFORD WAY",
            "city": "DOWNINGTOWN",
            "state": "PA",
            "postal_code": "193353140",
            "telephone_number": "610-518-3397"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 SPRUCE STREET",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191076130",
            "telephone_number": "215-829-5664"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASEK",
        "first_name": "JOHN",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-14",
        "last_updated": "2007-11-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "PA",
            "license": "310215L",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Philadelphia, PA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 9, 2007; 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.