John Grunyk, MD

Primary specialty

Pediatric Critical Care Medicine PhysicianTaxonomy code 2080P0203X

License

104763 Issued in GA

Practice address

2220 N Druid Hills Rd NE
Atlanta, GA 30329-3117

Phone

(404) 785-2344

NPI assigned

Mar 25, 2019

Last updated

Aug 31, 2025By 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 1

Addresses

Medicare fee-for-service enrollment

Enrolled in GA

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

Critical Care (Intensivists)

Education

Other, 2019

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Choa Hospital Based, LLC

  • Pediatrics Physician
  • Brookhaven, GA
  • NPI 1457695488
  Medicare reassignment NPD
• Choa Multispecialty, LLC

  • Pediatrics Physician
  • Brookhaven, GA
  • NPI 1437493467
  NPD
• Arthur M. Blank Hospital, Inc.

  • Children's Hospital
  • Atlanta, GA
  • NPI 1689744450
  NPD (past)

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

{
    "created_epoch": "1553472000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756598400000",
    "number": "1871053744",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2220 N DRUID HILLS RD NE",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303293117"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2220 N DRUID HILLS RD NE",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303293117",
            "telephone_number": "404-785-2344"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "725 Welch Rd",
            "address_purpose": "LOCATION",
            "city": "Palo Alto",
            "state": "CA",
            "postal_code": "943041601",
            "country_code": "US",
            "telephone_number": "650-497-8000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "225 E Chicago Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606112991",
            "country_code": "US",
            "telephone_number": "312-227-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRUNYK",
        "first_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-25",
        "last_updated": "2025-08-31",
        "certification_date": "2025-08-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0203X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Critical Care Medicine",
            "state": "GA",
            "license": "104763",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ross Fredrick Grumet, MD
• Hadley Grundman
• Michael John Grundy, MD
• Meilin Grunnagle, MD
• Jocelyn Rebecca Grunwell, MD, PHD
• Gruving Behavior Therapy LLC
• Stacy Stein Gryboski, M.D.
• Lauren Elizabeth Grychowski
• Lilly Gu
• Lina Belle Gu

• Pediatric Critical Care Medicine Physician in Atlanta, GA
• Providers in Atlanta, GA by specialty
• Pediatric Critical Care Medicine Physician in Georgia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 31, 2025; 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.