Individual provider Active NPI

Calvin Brian Mah, CRNA

  • Certified Registered Nurse Anesthetist
  • Harrisburg, PA
National Provider Identifier
1285870253
Registry record updated Jun 22, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
RN570026 Issued in PA
Practice address
4300 Londonderry Rd
Harrisburg, PA 17109-5317
Phone
(717) 782-5118
Fax
(717) 782-5854
NPI assigned
Dec 23, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 22, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X 149664 MO
Certified Registered Nurse Anesthetist 367500000X RN570026 PA Primary

Addresses

Primary practice location

4300 Londonderry Rd
Harrisburg, PA 17109-5317

Mailing address

PO Box 858
MC A410
Hershey, PA 17033-0858
Phone (800) 243-1455

Other practice location 1

500 University Dr
Hershey, PA 17033
Phone (717) 531-6597

Other practice location 2

503 N 21st St
Camp Hill, PA 17011-2204
Phone (717) 763-2100

Other practice location 3

503 N 21st St
Camp Hill, PA 17011-2204
Phone (717) 763-2100

Other identifiers 1

IdentifierTypeStateIssuer
1022567420004MedicaidPA

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20141208001132 PA Practitioner - Certified Registered Nurse Anesthetist (Crna) 7214084177 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
University of Pittsburgh School of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
The Milton S Hershey Medical Center Physicians GroupGroup PAC ID 3870405483, 1,606 clinicians
Hershey Anesthesia LLCGroup PAC ID 6800877523, 7 clinicians

Practice addresses (Care Compare)

500 Universidy Dr
Hershey, PA 17033-2360
Phone (717) 531-8202

905 W Governor Rd
Suite 100
Hershey, PA 17033-2307
Phone (717) 531-1318

Hospital & facility affiliations

  • Milton S Hershey Medical Center Hospital, Hershey, PA, CCN 390256

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

State licenses

LicenseStateTypeSpecialty
149664MOMDCertified Registered Nurse Anesthetist
RN570026PAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
The Milton S Hershey Medical Center Physician Group CurrentSince Oct 20, 2014 Accepting new patients
Geisinger Clinic CurrentSince Jul 1, 2019 Accepting new patients
Penn State Health Medical Group, LLC Current Accepting new patients
Geisinger Clinic Current Accepting new patients
Penn State Health Medical Group, LLC CurrentSince Oct 1, 2022 Accepting new patients
The Milton S Hershey Medical Center Physicians Group Current Accepting new patients
Geisinger Clinic CurrentSince Jul 1, 2019 Accepting new patients
Hershey Anesthesia LLC Nurse Anesthetist, Certified Registered CurrentSince May 1, 2017 Accepting new patients
The Milton S Hershey Medical Center Physician Group CurrentSince Oct 20, 2014 Accepting new patients
Penn State Health Medical Group, LLC CurrentSince Oct 1, 2022 Accepting new patients
Hershey Endoscopy Center, LLC Current Accepting new patients

Locations

503 N 21st St
Camp Hill, PA 17011
Phone (717) 763-2100

503 N 21st St
#A410
Camp Hill, PA 17011

100 N Academy Ave
Danville, PA 17822

2200 Good Hope Rd
Enola, PA 17025
Phone (717) 981-8230

1120 Cocoa Ave
Hershey, PA 17033
Phone (717) 533-4141

500 University Dr
Hershey, PA 17033
Phone (717) 531-8181

905 W Governor Rd
Ste 100
Hershey, PA 17033
Phone (717) 531-1318

500 University Dr
#A410
Hershey, PA 17033
Phone (717) 531-8131

500 University Dr
#41
Hershey, PA 17033
Phone (717) 531-8202

500 University Dr
#410
Hershey, PA 17033
Phone (717) 531-1159

4300 Londonderry Rd
Lower Paxton, PA 17109
Phone (717) 597-7044

Organizations & group practices 11

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": "1229990400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782086400000",
    "number": "1285870253",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 858",
            "address_2": "MC A410",
            "city": "HERSHEY",
            "state": "PA",
            "postal_code": "170330858",
            "telephone_number": "800-243-1455"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4300 LONDONDERRY RD",
            "city": "HARRISBURG",
            "state": "PA",
            "postal_code": "171095317",
            "telephone_number": "717-782-5118",
            "fax_number": "717-782-5854"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "500 University Dr",
            "address_purpose": "LOCATION",
            "city": "Hershey",
            "state": "PA",
            "postal_code": "17033",
            "country_code": "US",
            "telephone_number": "717-531-6597",
            "fax_number": "717-531-7790",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "503 N 21st St",
            "address_purpose": "LOCATION",
            "city": "Camp Hill",
            "state": "PA",
            "postal_code": "170112204",
            "country_code": "US",
            "telephone_number": "717-763-2100",
            "fax_number": "717-975-0779",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "503 N 21st St",
            "address_purpose": "LOCATION",
            "city": "Camp Hill",
            "state": "PA",
            "postal_code": "170112204",
            "country_code": "US",
            "telephone_number": "717-763-2100",
            "fax_number": "717-975-0779",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAH",
        "first_name": "CALVIN",
        "middle_name": "BRIAN",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-12-23",
        "last_updated": "2026-06-22",
        "certification_date": "2026-06-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MO",
            "license": "149664",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "PA",
            "license": "RN570026",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1022567420004",
            "state": "PA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Harrisburg, PA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 22, 2026; 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.