Mark S. Murphy, DDS
Dentist · Castro Valley, CA
Mark S. Murphy, DDS is a dentist with a practice address in Castro Valley, California, and NPI 1942326939, issued on Mar 21, 2007. Check the license (California 29089, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark S. Murphy
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 29089 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2380 Grove Way, Castro Valley, CA 94546
- Phone
- (510) 226-5112
- Enumerated
- Mar 21, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (510) 886-2847
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 2380 Grove Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mackenzie Murphy, DDSDentist1134840358
Verify Mark S. Murphy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 29089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average dentist in 2024
83 Medicare Part D claims for 54 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Penicillin V Potassium30 claims
- Azithromycin25 claims
- Amoxicillin12 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.
Mark S. Murphy among 14,729 dentist records in California
Mark S. Murphy, DDS is one of 14,729 dentist records with a practice address in California. 56% 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 18% of them.
- NPI issued2007 · 18% of these records are older, 58% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 73% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 dentist records list a practice address in Castro Valley
They are 27 of the 999 NPPES records with a practice address in Castro Valley, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Castro Valley → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Timothy Bennett, DDSCastro Valley, CA 945461366520249
- David Fosdahl, DDSCastro Valley, CA 945461053460121
- Heidi Hausauer, D.D.S.Castro Valley, CA 945461902020746
- Kiran Khemani, DDSCastro Valley, CA 945461346305729
- Stephen La Due, DDSCastro Valley, CA 945461396879565
- Hoa Lai, DDSCastro Valley, CA 945461922197748
- Carolyn Langer, DDSCastro Valley, CA 945461104980309
- Luis Morales, DDSCastro Valley, CA 945461205854379
Common questions
What is Mark S. Murphy, DDS's NPI number?
Mark S. Murphy, DDS's National Provider Identifier (NPI) is 1942326939, issued on Mar 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Murphy, DDS located?
The NPPES record lists a practice address at 2380 Grove Way, Castro Valley, CA, 94546. Phone: (510) 226-5112. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Murphy, DDS's license?
NPPES lists California license number 29089, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark S. Murphy, DDS prescribe under Medicare Part D?
In 2024, Mark S. Murphy, DDS had 83 Medicare Part D claims for 54 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.