Christopher H May, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

65960 Issued in AZ

Practice address

500 W Thomas Rd Ste 850
Phoenix, AZ 85013-4218

Phone

(602) 406-1150

NPI assigned

May 12, 2008

Last updated

Jan 20, 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 5

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in OK, TX, IL, IN, VA, AR, MT, CT, MO9 enrollments

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 9

Specialty

Cardiovascular Disease (Cardiology)

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Access Telecare PLLCGroup PAC ID 7810204831, 409 clinicians

Cherokee NationGroup PAC ID 5799698742, 446 clinicians

Mercy Hospital Ardmore IncGroup PAC ID 8123011277, 13 clinicians

Northeastern Health SystemGroup PAC ID 1456255025, 105 clinicians

Exceptional Physicians Group Ardmore Hospital PLLCGroup PAC ID 8921542622, 22 clinicians

Dewitt Medical DistrictGroup PAC ID 3072421395, 32 clinicians

Mercy Clinic Oklahoma CommunitiesGroup PAC ID 1153468921, 645 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Cherokee Nation W W Hastings Indian Hospital Hospital, Tahlequah, OK, CCN 370171
• Northeastern Health System Hospital, Tahlequah, OK, CCN 370089
• Mercy Hospital Ardmore, Inc Hospital, Ardmore, OK, CCN 370047
• Cuero Regional Hospital Hospital, Cuero, TX, CCN 450597
• Sullivan County Community Hospital Hospital, Sullivan, IN, CCN 151327

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: christopher.may@direct.stjohnhealthsystem.com
• Direct secure messaging: cmay394540@ewd.direct.hshs.org
• FHIR API: https://fhir-myrecord.cerner.com/r4/932b43fb-c766-413c-a343-640549d20cb3/

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.

• Access Telecare, PLLC

  • Internal Medicine Physician
  • Dallas, TX
  • NPI 1013303080

  AR, CT, Family Medicine, IN, MO, MT, OK, VA

  Medicare reassignment Care Compare group NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Sallisaw, OK
  • NPI 1780692723

  TX

  Medicare reassignment Care Compare group NPD
• Dewitt Medical District

  dba Cuero Regional Hospital

  • Emergency Medicine Physician
  • Cuero, TX
  • NPI 1366532608
  Medicare reassignment Care Compare group NPD
• Exceptional Physicians Group Ardmore Hospital PLLC

  • Emergency Medicine Physician
  • Ardmore, OK
  • NPI 1588427462
  Medicare reassignment Care Compare group NPD
• Mercy Clinic Oklahoma Communities

  • Family Medicine Physician
  • Oklahoma City, OK
  • NPI 1386874550
  Medicare reassignment Care Compare group NPD
• Mercy Hospital Ardmore, Inc

  • Cardiovascular Disease Physician
  • Ardmore, OK
  • NPI 1578906657

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Northeastern Health System

  • Emergency Medicine Physician
  • Tahlequah, OK
  • NPI 1457574170
  Medicare reassignment Care Compare group NPD
• St. John Physicians, Inc.

  • Internal Medicine Physician
  • Tulsa, OK
  • NPI 1336194406

  Family Medicine

  Medicare reassignment NPD
• Cherokee Nation

  dba Cherokee Nation Public Health

  • Public Health or Welfare Agency
  • Tahlequah, OK
  • NPI 1013884154
  NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Muskogee, OK
  • NPI 1841207156
  NPD
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Ochelata, OK
  • NPI 1871972430
  NPD
• Dewitt Medical District

  dba Oakmont Healthcare and Rehabilitation Center of Katy

  • Skilled Nursing Facility
  • Katy, TX
  • NPI 1053511980
  NPD

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

• Cherokee Nation

  • General Acute Care Hospital
  • Tahlequah, OK
  • NPI 1275799645
  Care Compare affiliation
• Cherokee Nation

  • Multi-Specialty Clinic/Center
  • Claremore, OK
  • NPI 1497568968

  Hospital

  Care Compare affiliation
• Dewitt Medical District

  dba Cuero Regional Hospital

  • Rural Acute Care Hospital
  • Cuero, TX
  • NPI 1437148020
  Care Compare affiliation
• Mercy Hospital Ardmore, Inc.

  • General Acute Care Hospital
  • Ardmore, OK
  • NPI 1386741635
  Care Compare affiliation
• Northeastern Health System

  dba Tahlequah City Hospital

  • General Acute Care Hospital
  • Tahlequah, OK
  • NPI 1003865999
  Care Compare affiliation
• Northeastern Health System

  dba Fort Gibson Medical Clinic

  • Rural Health Clinic/Center
  • Fort Gibson, OK
  • NPI 1013458652

  Hospital

  Care Compare affiliation
• Northeastern Health System

  dba Tahlequah Medical Group Primary Care

  • Rural Health Clinic/Center
  • Tahlequah, OK
  • NPI 1306387949

  Hospital

  Care Compare affiliation
• Northeastern Health System

  • Addiction (Substance Use Disorder) Counselor
  • Tahlequah, OK
  • NPI 1689338519

  Hospital

  Care Compare affiliation
• Sullivan County Community Hospital

  • Critical Access Hospital Clinic/Center
  • Sullivan, IN
  • NPI 1487450698
  Care Compare affiliation
• Sullivan County Community Hospital

  • Clinic/Center
  • Sullivan, IN
  • NPI 1497363303

  Hospital

  Care Compare affiliation
• Sullivan County Community Hospital

  • Critical Access Hospital
  • Sullivan, IN
  • NPI 1497759260
  Care Compare affiliation

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

{
    "created_epoch": "1210550400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768867200000",
    "number": "1699942482",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3460 E FRANK PHILLIPS BLVD",
            "city": "BARTLESVILLE",
            "state": "OK",
            "postal_code": "740062406"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 W THOMAS RD STE 850",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850134218",
            "telephone_number": "602-406-1150"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "540 LITCHFIELD ST",
            "address_purpose": "LOCATION",
            "city": "TORRINGTON",
            "state": "CT",
            "postal_code": "067906679",
            "country_code": "US",
            "telephone_number": "972-449-0540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3460 E Frank Phillips Blvd",
            "address_purpose": "LOCATION",
            "city": "Bartlesville",
            "state": "OK",
            "postal_code": "740062406",
            "country_code": "US",
            "telephone_number": "918-332-3600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "619 E Mason St Ste 4P57",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "IL",
            "postal_code": "627011034",
            "country_code": "US",
            "telephone_number": "217-788-0706",
            "fax_number": "217-525-2535",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAY",
        "first_name": "CHRISTOPHER",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-05-12",
        "last_updated": "2026-01-20",
        "certification_date": "2026-01-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "83085",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "35.096192",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NC",
            "license": "141662",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "AZ",
            "license": "65960",
            "primary": true
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "OK",
            "license": "30852",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cmay394540@ewd.direct.hshs.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CDA/CCD/TXT",
            "address_1": "619 E Mason St Ste 4P57",
            "city": "Springfield",
            "state": "IL",
            "country_code": "US",
            "postal_code": "627011034",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Seth C Maxwell, MD
• Stacy M Maxwell
• Susan L Maxwell, PHD
• Alyssa May, RBT
• Angela Allan May, FNP-BC
• Christopher Quinn May, M.D.
• Daniel May
• Elodia May, L.C.S.W.
• Jennifer Marie May, MSW
• Jessica Noel May, DACM, MS, L.AC.

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 20, 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.