Gregory Thomas Grubba, DDS
Dentist · Anchorage, AK
Gregory Thomas Grubba, DDS is a dentist with a practice address in Anchorage, Alaska, and NPI 1669684353, issued on May 4, 2007. Check the license (Alaska AA 731, as entered in NPPES) with the Alaska board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Thomas Grubba
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- AA 731 AK
Self-reported in NPPES; status is on the state search - Practice location
- 4200 Lake Otis, Anchorage, AK 99508
- Phone
- (907) 562-1958
- Enumerated
- May 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (907) 561-1696
- Entity
- Type 1 · individual
8 nearest dentist records → All 363 in Alaska → Look up another NPI →
Verify Gregory Thomas Grubba in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Alaska board licenses this profession
Search for license AA 731Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average dentist in 2024
51 Medicare Part D claims for 31 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Chlorhexidine Gluconate14 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.
Industry payments in 2024: $76.72
1 payment: food and beverage; the largest payer was Ultradent Products Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregory Thomas Grubba among 363 dentist records in Alaska
Gregory Thomas Grubba, DDS is one of 363 dentist records with a practice address in Alaska. 49% 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 26% of them.
- NPI issued2007 · 26% of these records are older, 58% newer
- In a Medicare fileYes · 49% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Alaska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
145 dentist records list a practice address in Anchorage
They are 145 of the 11,751 NPPES records with a practice address in Anchorage, and 363 dentist records in Alaska.
All 363 in Alaska → Every provider in Anchorage → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Joel Aimone, DDSAnchorage, AK 995081043237092
- Arlan Andrews, DMDAnchorage, AK 995081962421420
- Jane Bleuel, DMDAnchorage, AK 995081851331532
- Thomas Brewer, DDSAnchorage, AK 995081467486068
- Clay Crossett, DMDAnchorage, AK 995081417981366
- David Falsey, DDSAnchorage, AK 995081265450407
- Robert Felker, DDS, MSAnchorage, AK 995081861410946
- George Fink, DDSAnchorage, AK 995081871511683
Common questions
What is Gregory Thomas Grubba, DDS's NPI number?
Gregory Thomas Grubba, DDS's National Provider Identifier (NPI) is 1669684353, issued on May 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Thomas Grubba, DDS located?
The NPPES record lists a practice address at 4200 Lake Otis, Anchorage, AK, 99508. Phone: (907) 562-1958. Providers update this record themselves, so call before visiting.
How can I verify Gregory Thomas Grubba, DDS's license?
NPPES lists Alaska license number AA 731, as entered by the provider. Search the Alaska board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Thomas Grubba, DDS prescribe under Medicare Part D?
In 2024, Gregory Thomas Grubba, DDS had 51 Medicare Part D claims for 31 beneficiaries; the average among dentist prescribers was 86. 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.