Karl Supal, DDS
General Practice Dentistry · Los Altos, CA
Karl Supal, DDS is a general practice dentistry with a practice address in Los Altos, California, and NPI 1275188930, issued on Aug 8, 2019. Check the license (California DDS103819, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karl Supal
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DDS103819 CA
Self-reported in NPPES; status is on the state search - Practice location
- 99 3RD St, Los Altos, CA 94022
- Phone
- (650) 949-3376
- Enumerated
- Aug 8, 2019
- Record last updated
- Jan 14, 2022
- Entity
- Type 1 · individual
Also registered at 99 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph FieldGeneral Practice Dentistry1023307055
- John McFarlane, DMDGeneral Practice Dentistry1285986810
Verify Karl Supal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DDS103819Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average general practice dentistry in 2024
31 Medicare Part D claims for 20 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin14 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: $50.38
2 payments; by number, the most common kind was food and beverage; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
27 general practice dentistry records list a practice address in Los Altos
They are 27 of the 718 NPPES records with a practice address in Los Altos, and 17,852 general practice dentistry records in California.
All 27 in Los Altos → All 17,852 in California → Every provider in Los Altos →
Other general practice dentistry records in California
- Ronald Aanerud, DDSSan Diego, CA1871752931
- Steven Aaronson, D.D.S.Santa Monica, CA1265455851
- Shahrzad Aarup, DDSPomona, CA1265784367
- Al Abad, DDSSan Jose, CA1104992148
- Erwin Abad, D.D.S.Canoga Park, CA1861590093
- Francine Abad, DDSSan Francisco, CA1942700810
- Maria Abad, D.D.S.Norwalk, CA1215006754
- Mark Ryan Abad, DDSDaly City, CA1770357394
- Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
- Ernesto Abadilla, DDSPalm Desert, CA1508063801
Common questions
What is Karl Supal, DDS's NPI number?
Karl Supal, DDS's National Provider Identifier (NPI) is 1275188930, issued on Aug 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Karl Supal, DDS located?
The NPPES record lists a practice address at 99 3RD St, Los Altos, CA, 94022. Phone: (650) 949-3376. Providers update this record themselves, so call before visiting.
How can I verify Karl Supal, DDS's license?
NPPES lists California license number DDS103819, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Karl Supal, DDS prescribe under Medicare Part D?
In 2024, Karl Supal, DDS had 31 Medicare Part D claims for 20 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.