John Thomas Grbic, D.M.D.
Periodontics · New York, NY
John Thomas Grbic, D.M.D. is a periodontics with a practice address in New York, New York, and NPI 1124152582, issued on Mar 15, 2007. Check the license (New York 040723, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Thomas Grbic
- Credential
- D.M.D.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 040723 NY
Self-reported in NPPES; status is on the state search - Practice location
- 16 E 60TH St, New York, NY 10022
- Phone
- (212) 326-8520
- Enumerated
- Mar 15, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest periodontics records → All 565 in New York → Look up another NPI →
Also registered at 16 E 60TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann AxelClinical Social Worker1902938830
- Chiara BattistelloSocial Worker1295867125
- Jenna Baynes, DPTSpecialist1366724445
- Anja Behm, LMSWClinical Social Worker1568645299
- Rachel Berman, RD, CSR, CDNRegistered Dietitian1306169214
- Conrad Blum, M.D.Endocrinology, Diabetes & Metabolism Physician1578507018
Verify John Thomas Grbic in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 040723Check 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 periodontics in 2024
31 Medicare Part D claims for 19 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Chlorhexidine Gluconate16 claims
- Amoxicillin11 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.
John Thomas Grbic among 565 periodontics records in New York
John Thomas Grbic, D.M.D. is one of 565 periodontics records with a practice address in New York. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 28% of them.
- NPI issued2007 · 28% of these records are older, 36% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 80% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in New York
There are 565 periodontics records in New York.
All 565 in New York → Every provider in New York → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Mahtab Azimi, DDSNew York, NY 100221336112168
- Patrice Buonocore, DDSNew York, NY 100221730227943
- Ana Giglio, DDSNew York, NY 100221659416717
- Maria Gomez, D.D.S.New York, NY 100221164541843
- David Hoexter, DMDNew York, NY 100221679668651
- Eliaz Kaufman, DDS, MSNew York, NY 100221336222850
- Joel Kleiman, D.D.S.New York, NY 100221790831733
- Anca Lemler, DDS, MSDNew York, NY 100221548350044
Common questions
What is John Thomas Grbic, D.M.D.'s NPI number?
John Thomas Grbic, D.M.D.'s National Provider Identifier (NPI) is 1124152582, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas Grbic, D.M.D. located?
The NPPES record lists a practice address at 16 E 60TH St, New York, NY, 10022. Phone: (212) 326-8520. Providers update this record themselves, so call before visiting.
How can I verify John Thomas Grbic, D.M.D.'s license?
NPPES lists New York license number 040723, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does John Thomas Grbic, D.M.D. prescribe under Medicare Part D?
In 2024, John Thomas Grbic, D.M.D. had 31 Medicare Part D claims for 19 beneficiaries; the average among periodontics prescribers was 277. 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.