Robert Orenstein, DO

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

5472 Issued in AZ

Practice address

5777 E Mayo Blvd
Phoenix, AZ 85054

Phone

(480) 301-8000

NPI assigned

Dec 27, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Infectious DiseaseAlso: Internal Medicine

Education

Other, 1987

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Mayo Clinic ArizonaGroup PAC ID 7012829930, 1,618 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mayo Clinic Hospital Hospital, Phoenix, AZ, CCN 030103

Merit-based Incentive Payment System (MIPS)

Final score

86.47 of 100Reported as group

Quality

78.27

Promoting interoperability

100

Improvement activities

40

Cost

76.62

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rorenstein67253@ehrdirect.mayoclinicmsg.org

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.

• Mayo Clinic Arizona

  • Multi-Specialty Clinic/Center
  • Scottsdale, AZ
  • NPI 1558332494
  Medicare reassignment Care Compare group NPD
• Banner-University Medical Group

  • Multi-Specialty Clinic/Center
  • Phoenix, AZ
  • NPI 1508809427
  Medicare reassignment
• Mayo Clinic Arizona

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1699520049
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Mayo Clinic Arizona

  • General Acute Care Hospital
  • Phoenix, AZ
  • NPI 1154392231
  Care Compare affiliation

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

{
    "created_epoch": "1135641600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788480000000",
    "number": "1174500565",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5777 E MAYO BLVD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850544502",
            "telephone_number": "480-301-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5777 E MAYO BLVD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "85054",
            "telephone_number": "480-301-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ORENSTEIN",
        "first_name": "ROBERT",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-27",
        "last_updated": "2026-09-04",
        "certification_date": "2026-09-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "AZ",
            "license": "5472",
            "primary": true
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "MN",
            "license": "44468",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MN",
            "license": "44468",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bradley Ordener, PHARMD, BCPS
• Belinda C. Ordonez, FNP-BC
• Carol Lyn G Ordynsky, O.D.
• George Ordynsky, OD
• Oren Tessler MD LLC
• Susan E Oreshack, DPT
• Gary D Oreskovich, D.D.S.
• Orest G Komarnyckyj DDS PC
• David Oriabure
• Rosine Oriabure, DNP, PMHNP-BC

• Infectious Disease Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Infectious Disease Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 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.