Masly Harsono, DDS, MS, DMD
General Practice Dentistry · Los Gatos, CA
Masly Harsono, DDS, MS, DMD is a general practice dentistry with a practice address in Los Gatos, California, and NPI 1669893731, issued on Dec 17, 2013. Check the license (California 64977, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Masly Harsono
- Credential
- DDS, MS, DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License numbers
- 64977 CA
DN1855466 MA
Self-reported in NPPES; status is on the state search - Practice location
- 431 Monterey Ave Ste 6, Los Gatos, CA 95030
- Phone
- (408) 354-1717
- Enumerated
- Dec 17, 2013
- Record last updated
- Dec 14, 2025
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Verify Masly Harsono in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 64977Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average general practice dentistry in 2024
16 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
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.
Masly Harsono among 17,852 general practice dentistry records in California
Masly Harsono, DDS, MS, DMD is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 24% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2025 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 general practice dentistry records list a practice address in Los Gatos
They are 44 of the 1,905 NPPES records with a practice address in Los Gatos, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Los Gatos → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- William Frey, D.M.D.Los Gatos, CA 950301447279195
- Anthony Needham, DDSLos Gatos, CA 950301962541748
- Rodney Rosland, D.D.S.Los Gatos, CA 950301316963473
- Anthony Yagobi, D.D.S.Los Gatos, CA 950301154589489
- Neda Zadeh, DDSLos Gatos, CA 950301396022141
- Bliss ZinLos Gatos, CA 950301558720805
- Tony Choi, D.M.D.Los Gatos, CA 950321669421368
- Edward Larsen, D.D.S.Los Gatos, CA 950321801902812
Common questions
What is Masly Harsono, DDS, MS, DMD's NPI number?
Masly Harsono, DDS, MS, DMD's National Provider Identifier (NPI) is 1669893731, issued on Dec 17, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Masly Harsono, DDS, MS, DMD located?
The NPPES record lists a practice address at 431 Monterey Ave Ste 6, Los Gatos, CA, 95030. Phone: (408) 354-1717. Providers update this record themselves, so call before visiting.
How can I verify Masly Harsono, DDS, MS, DMD's license?
NPPES lists California license number 64977, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Masly Harsono, DDS, MS, DMD prescribe under Medicare Part D?
In 2024, Masly Harsono, DDS, MS, DMD had 16 Medicare Part D claims; 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.