Keith Gronbach, D.D.S.
Oral and Maxillofacial Surgery (Dentist) · Lafayette, CA
Keith Gronbach, D.D.S. is an oral and maxillofacial surgery (dentist) with a practice address in Lafayette, California, and NPI 1992853204, issued on Jan 5, 2007. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Keith Gronbach
- Credential
- D.D.S.
- Primary taxonomy
- Oral and Maxillofacial Surgery (Dentist) 1223S0112X
- Practice location
- 3799 Mt Diablo Blvd, Lafayette, CA 94549
- Phone
- (925) 283-4050
- Enumerated
- Jan 5, 2007
- Entity
- Type 1 · individual
Also registered at 3799 Mt Diablo Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Leonard Saputo, MDInternal Medicine Physician1295825438
Verify Keith Gronbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
30% more Medicare Part D claims than the average oral and maxillofacial surgery (dentist) in 2024
531 Medicare Part D claims for 158 beneficiaries, against an average of 407 among the 5,229 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 133 claims were for opioids.
Most prescribed
- Chlorhexidine Gluconate138 claims
- Hydrocodone-Acetaminophen113 claims
- Amoxicillin102 claims
- Naproxen74 claims
- Ibuprofen24 claims
- Acetaminophen-Codeine19 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.
Oral and Maxillofacial Surgery (Dentist) providers in California
There are 866 oral and maxillofacial surgery (dentist) records in California.
Other oral and maxillofacial surgery (dentist) records in California
- Allan AbayevLoma Linda, CA1992649479
- Hooman Adamous, DMDBellflower, CA1497917439
- David Adams, DDSFresno, CA1831282755
- Arman Afifi, D.D.S., M.D.Cupertino, CA1528494598
- Payam Afzali, DDS, MDLos Angeles, CA1326350851
- Jacob Agatstein, D.M.D.Torrance, CA1932410842
- Tara Aghaloo, DDS, MD, PHDLos Angeles, CA1740464692
- Arsalan Ahani, D.D.S, M.D.San Mateo, CA1215035696
- Fay Ahmadpour, DDSSan Diego, CA1528143690
- David Ahn, DMDSan Francisco, CA1265865216
Common questions
What is Keith Gronbach, D.D.S.'s NPI number?
Keith Gronbach, D.D.S.'s National Provider Identifier (NPI) is 1992853204, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Keith Gronbach, D.D.S. located?
The NPPES record lists a practice address at 3799 Mt Diablo Blvd, Lafayette, CA, 94549. Phone: (925) 283-4050. Providers update this record themselves, so call before visiting.
How can I verify Keith Gronbach, D.D.S.'s license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Keith Gronbach, D.D.S. prescribe under Medicare Part D?
In 2024, Keith Gronbach, D.D.S. had 531 Medicare Part D claims for 158 beneficiaries; the average among oral and maxillofacial surgery (dentist) prescribers was 407. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.