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JOHN GRUNYK MD
NPI 1871053744
Pediatrics - Pediatric Critical Care Medicine in Atlanta, GA

Active since March 25, 2019PECOS Enrolled
2220 N DRUID HILLS RD NE, ATLANTA, GA 30329(404) 785-2344 Get Directions Write a Review

NPPES record last updated: August 31, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About John Grunyk Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN GRUNYK MD (NPI 1871053744) is an individual pediatric critical care medicine provider in Atlanta, Georgia, licensed in Georgia (104763) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1871053744
Entity TypeIndividualMale
Primary Taxonomy2080P0203X
Provider Legal NameJOHN GRUNYKCredential: MD
Location Address2220 N DRUID HILLS RD NEAtlanta, GA 30329-3117
Mailing Address2220 N Druid Hills Rd NeAtlanta, GA 30329-3117
Phone(404) 785-2344
Sole ProprietorNo
Enumeration DateMarch 25, 2019
Last NPPES UpdateAugust 31, 2025
NPPES CertifiedAugust 31, 2025
✔ NPI 1871053744 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in GA · 104763
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
2220 N DRUID HILLS RD NE, Atlanta, GA 30329
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Secondary Practice Locations 2

Location 1725 Welch RdPalo Alto, CA 94304-1601 · Phone (650) 497-8000
Location 2225 E Chicago AveChicago, IL 60611-2991 · Phone (312) 227-4000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Grunyk Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show John Grunyk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Choa Hospital Based, LLC
0.5 mi
Pediatrics
1575 NORTHEAST EXPY NE
Brookhaven, GA 30329
  • Reassigned Medicare billing, Georgia enrollment
  • 251 clinicians in this Medicare group
NPI 1457695488 (404) 785-6000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JOEL A. FRIEDLANDER DO
Pediatrics (Pediatric Gastroenterology)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-3020
NICOLE COOLIDGE CPNP
Nurse Practitioner (Family)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-7683
YAW OWUSU MD
Pediatrics (Pediatric Cardiology)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-9188
ASHWINI TILAK MD
Otolaryngology (Pediatric Otolaryngology)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-5437
RONAK DAVE
Pediatrics
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (678) 491-9475
PATRICK JOSEPH FLANAGAN MD
Student in an Organized Health Care Education/Training Program
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-5437
ELLEN OLSON CPNP
Nurse Practitioner (Pediatrics)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-1200
MRS. MADELINE CAGLE ALLSOPP RN
Nurse Practitioner (Pediatrics)
2220 N DRUID HILLS RD NE
ATLANTA, GA 30329
Dekalb County (404) 785-5437

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Grunyk's NPI number?

The NPI number for John Grunyk is 1871053744. It was assigned to this individual provider in the NPPES registry on March 25, 2019.

Where is John Grunyk located?

John Grunyk practices at 2220 N Druid Hills Rd NE, Atlanta, GA 30329. The listed phone number is (404) 785-2344.

What is John Grunyk's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is John Grunyk enrolled in Medicare?

Yes. John Grunyk is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Grunyk's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Grunyk reassigns Medicare benefits to Choa Hospital Based, LLC (Brookhaven, GA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Grunyk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for John Grunyk was last updated on August 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.