Grace Koo, M.D.
Allergy & Immunology Physician · Nashville, TN
Grace Koo, M.D. is an allergy & immunology physician with a practice address in Nashville, Tennessee, and NPI 1255788659, issued on May 16, 2016. Check the license (Tennessee 65411, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Grace Koo
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 65411 TN
036148471 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3601 The Vanderbilt Clinic, Nashville, TN 37232
- Phone
- (615) 936-2000
- Enumerated
- May 16, 2016
- Record last updated
- Jan 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20220603001450); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 85 in Tennessee → Look up another NPI →
Also registered at 3601 The Vanderbilt Clinic
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hibo Abdi, APRNGerontology Nurse Practitioner1336761758
- Hodan Abdi, NPFamily Nurse Practitioner1710383922
- Cecilia Abello, PA-CPhysician Assistant1760336101
- Ahad Abid, MDInternal Medicine Physician1316500176
- Yara Aboshady, MDObstetrics & Gynecology Physician1558998971
Verify Grace Koo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 65411Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
79 Medicare Part D claims for 26 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Ipratropium Bromide11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Vanderbilt University Medical CenterNashville, TN · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Grace Koo among 85 allergy & immunology physician records in Tennessee
Grace Koo, M.D. is one of 85 allergy & immunology physician records with a practice address in Tennessee. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 7% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2016 · median 2001 among the 68 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Tennessee
There are 85 allergy & immunology physician records in Tennessee.
All 85 in Tennessee → Every provider in Nashville → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Derek Damin, MDNashville, TN 372321003809724
- Ryszard Dworski, MDNashville, TN 372321518041623
- John Fahrenholz, M.D.Nashville, TN 372321518958370
- Edward Gerard Iglesia, M.D.Nashville, TN 372321154764876
- Elizaveta Kalaidina, M.D.Nashville, TN 372321881078491
- Matthew Krantz, M.D.Nashville, TN 372321639523582
- Jason Moraczewski, MDNashville, TN 372321295364610
- Cosby Stone, M.D., MPHNashville, TN 372321891010682
Common questions
What is Grace Koo, M.D.'s NPI number?
Grace Koo, M.D.'s National Provider Identifier (NPI) is 1255788659, issued on May 16, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Grace Koo, M.D. located?
The NPPES record lists a practice address at 3601 The Vanderbilt Clinic, Nashville, TN, 37232. Phone: (615) 936-2000. Providers update this record themselves, so call before visiting.
How can I verify Grace Koo, M.D.'s license?
NPPES lists Tennessee license number 65411, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grace Koo, M.D. prescribe under Medicare Part D?
In 2024, Grace Koo, M.D. had 79 Medicare Part D claims for 26 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions 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.
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.