NPPES file of Aug 9, 2026

Katherine Callahan Grommersch, CAA

Anesthesiologist Assistant · Atlanta, GA

Katherine Callahan Grommersch, CAA is an anesthesiologist assistant with a practice address in Atlanta, Georgia, and NPI 1104341494, issued on Aug 7, 2017. Check the license with the Georgia board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1104341494
Name
Katherine Callahan Grommersch
Credential
CAA
Primary taxonomy
Anesthesiologist Assistant 367H00000X
Practice location
1968 Peachtree RD NW, Atlanta, GA 30309
Phone
(770) 880-2812
Enumerated
Aug 7, 2017
Record last updated
Dec 14, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20220207000717); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiologist assistant records → All 1,541 in Georgia → Look up another NPI →

Also registered at 1968 Peachtree RD NW

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Meron AbrahaHospitalist Physician1528412558
  2. Daniel Adams, MDEmergency Medicine Physician1275988917
  3. Elizabeth AdegbesanRegistered Nurse1841161320
  4. Adaeze Adigweme, MDInternal Medicine Physician1710121140
  5. Daniela AgudeloAnesthesiologist Assistant1366121667
  6. Liliana Aguilar-Pagan, AGACNP-BCNurse Practitioner1982202099

Verify Katherine Callahan Grommersch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Georgia board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Georgia license search

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Bills Medicare through one group practice

  1. Anesthesiologists OF Greater Orlando IncWinter Garden, FL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katherine Callahan Grommersch among 1,541 anesthesiologist assistant records in Georgia

Katherine Callahan Grommersch, CAA is one of 1,541 anesthesiologist assistant records with a practice address in Georgia. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 61% of them.

  • NPI issued2017 · 61% of these records are older, 35% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 83% of these records are
  • Graduated2017 · median 2015 among the 1,271 with a school on file
  • Record last updated2021 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367H00000X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

772 anesthesiologist assistant records list a practice address in Atlanta

They are 772 of the 31,476 NPPES records with a practice address in Atlanta, and 1,541 anesthesiologist assistant records in Georgia.

All 1,541 in Georgia → Every provider in Atlanta → Anesthesiologist Assistant nationwide →

The 8 anesthesiologist assistant records with the nearest ZIP codes

  1. Susan Adams, AAAtlanta, GA 303091417975632
  2. Karen Bonner, PAAAAtlanta, GA 303091790701357
  3. Sorina Cristea, PA-AAAtlanta, GA 303091932188307
  4. Clifton Gunter, PA-AAAtlanta, GA 303091285680249
  5. Theron Holtzclaw, AAAtlanta, GA 303091073538955
  6. Alisa Keats, PAAAAtlanta, GA 303091275558116
  7. Zacharias Mikronis, PAAAAtlanta, GA 303091477540722
  8. Jennifer Moore, PAAtlanta, GA 303091275513830

Common questions

What is Katherine Callahan Grommersch, CAA's NPI number?

Katherine Callahan Grommersch, CAA's National Provider Identifier (NPI) is 1104341494, issued on Aug 7, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Callahan Grommersch, CAA located?

The NPPES record lists a practice address at 1968 Peachtree RD NW, Atlanta, GA, 30309. Phone: (770) 880-2812. Providers update this record themselves, so call before visiting.

How can I verify Katherine Callahan Grommersch, CAA's license?

Search the Georgia board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.