Nathan Joseph Klein, FNP-C

Primary specialty

Dermatology PhysicianTaxonomy code 207N00000X

License

AP10605 Issued in AZ

Practice address

19646 N 27TH Ave Ste 305
Phoenix, AZ 85027-4027

Phone

(480) 556-0446

Fax

(480) 556-0447

NPI assigned

Oct 24, 2017

Last updated

Oct 8, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in AZ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Nathamy LLCGroup PAC ID 6406229376, 3 clinicians

Richard Lee Averitte Jr PLLCGroup PAC ID 9638069099, 31 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

76.1 of 100Reported as group

Quality

73.66

Promoting interoperability

100

Improvement activities

40

Cost

46.65

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: nathanklein@ad.allscriptsdirect.net
• Direct secure messaging: nklein@dermnow.emadirect.md

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Nathamy LLC

  dba Derm Now Arizona

  • Dermatology Physician
  • Surprise, AZ
  • NPI 1164138319
  Medicare reassignment Care Compare group NPD Authorized official
• Richard Lee Averitte Jr PLLC

  dba Affiliated Dermatology

  • Dermatology Physician
  • Scottsdale, AZ
  • NPI 1407804115
  Medicare reassignment Care Compare group
• Richard Lee Averitte Jr PLLC

  dba Affiliated Dermatology

  • Dermatology Physician
  • Phoenix, AZ
  • NPI 1609291848
  NPD (past)
• Richard Lee Averitte Jr., PLLC

  dba Affiliated Dermatology

  • Non-Pharmacy Dispensing Site
  • Surprise, AZ
  • NPI 1598112831
  NPD (past)
• Richard Lee Averitte Jr., PLLC

  dba Affiliated Dermatology

  • Non-Pharmacy Dispensing Site
  • Anthem, AZ
  • NPI 1619428851
  NPD (past)

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

{
    "created_epoch": "1508803200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791417600000",
    "number": "1417469982",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20401 N 73RD ST STE 230",
            "city": "SCOTTSDALE",
            "state": "AZ",
            "postal_code": "852554153",
            "telephone_number": "480-556-0446",
            "fax_number": "480-556-0447"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19646 N 27TH AVE STE 305",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850274027",
            "telephone_number": "480-556-0446",
            "fax_number": "480-556-0447"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KLEIN",
        "first_name": "NATHAN",
        "middle_name": "JOSEPH",
        "credential": "FNP-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-10-24",
        "last_updated": "2026-10-08",
        "certification_date": "2026-10-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "AZ",
            "license": "AP10605",
            "primary": false
        },
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "AZ",
            "license": "AP10605",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jason D Klein, M.D.
• Kenneth Klein
• Lauren Ellish Klein, MBA, MS, CCC-SLP
• Lawrence Klein, MD
• Matthew Anthony Klein, CRNA
• Neal A Klein, MD
• Roslyn Klein, PH.D.
• Stacey E Klein, APRN-NP
• Tara Klein
• Keli Kleindorfer

• Dermatology Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Dermatology Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 8, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.