Michael Thomas Grassa
General Practice Dentistry · Commack, NY
Michael Thomas Grassa is a general practice dentistry with a practice address in Commack, New York, and NPI 1669026142, issued on Aug 1, 2019. Check the license (New York 060463, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Thomas Grassa
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 060463 NY
Self-reported in NPPES; status is on the state search - Practice location
- 646 Commack RD, Commack, NY 11725
- Phone
- (631) 499-7280
- Enumerated
- Aug 1, 2019
- Record last updated
- Aug 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 646 Commack RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neil Bellovin, M.D.Pediatrics Physician1194743344
- Albert Biggiani, DMDGeneral Practice Dentistry1790802270
- Laura Frangella, D.D.S.General Practice Dentistry1275792897
- Tina Frangella, D.D.S.General Practice Dentistry1255596706
- Carolyn Gilbert, NPPsychiatric/Mental Health Nurse Practitioner1174889125
- Steven Gordon, LCSWRClinical Social Worker1225045511
Verify Michael Thomas Grassa 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 060463Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average general practice dentistry in 2024
12 Medicare Part D claims for 11 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
31 general practice dentistry records list a practice address in Commack
They are 31 of the 1,341 NPPES records with a practice address in Commack, and 7,828 general practice dentistry records in New York.
All 31 in Commack → All 7,828 in New York → Every provider in Commack →
Other general practice dentistry records in New York
- Samantha Aaron, DMDNew York, NY1972733178
- Bruce Aaronson, D.D.S.Oneonta, NY1881670107
- Theodore Aaronson, DDSNew York, NY1679540124
- William Aaronson, DDSFreeport, NY1619071271
- Falka Abaci, MDBrooklyn, NY1639252356
- Laarni Abanto, D.M.D.Bronx, NY1295896413
- Lester Abbamonte, D.D.S.Rochester, NY1679624076
- Timothy Abbamonte, D.D.S.Rochester, NY1780735183
- Gregory Abbott, D.D.S.Getzville, NY1285857912
- Avraham Abboudi, DMDStaten Island, NY1063537421
Common questions
What is Michael Thomas Grassa's NPI number?
Michael Thomas Grassa's National Provider Identifier (NPI) is 1669026142, issued on Aug 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Michael Thomas Grassa located?
The NPPES record lists a practice address at 646 Commack RD, Commack, NY, 11725. Phone: (631) 499-7280. Providers update this record themselves, so call before visiting.
How can I verify Michael Thomas Grassa's license?
NPPES lists New York license number 060463, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Thomas Grassa prescribe under Medicare Part D?
In 2024, Michael Thomas Grassa had 12 Medicare Part D claims for 11 beneficiaries; the average among general practice dentistry prescribers was 83. 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.