Spencer Karl Rowan, DDS
General Practice Dentistry · Merced, CA
Spencer Karl Rowan, DDS is a general practice dentistry with a practice address in Merced, California, and NPI 1457750572, issued on Aug 14, 2014. Check the license (California 64457, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Spencer Karl Rowan
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 64457 CA
Self-reported in NPPES; status is on the state search - Practice location
- 631 W 25TH St, Merced, CA 95340
- Phone
- (209) 383-9187
- Enumerated
- Aug 14, 2014
- Record last updated
- Dec 1, 2025
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 631 W 25TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Boyle, D.D.S.Dentist1962759951
- Richard Rowan, DMDGeneral Practice Dentistry1689995367
- Robert Rowan, D.M.D.General Practice Dentistry1871826131
Verify Spencer Karl Rowan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 64457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average general practice dentistry in 2024
74 Medicare Part D claims for 55 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin53 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.
Spencer Karl Rowan among 17,852 general practice dentistry records in California
Spencer Karl Rowan, DDS 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 2014, is newer than 76% of them.
- NPI issued2014 · 76% of these records are older, 22% 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).
38 general practice dentistry records list a practice address in Merced
They are 38 of the 2,836 NPPES records with a practice address in Merced, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Merced → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Abdulghani Amro, DDSMerced, CA 953401972671014
- Luis Andrews, D.D.S.Merced, CA 953401346383866
- Dennis Clark, DDSMerced, CA 953401780778050
- Michael Marshall, D.D.S.Merced, CA 953401508996570
- Robert Rowan, D.M.D.Merced, CA 953401871826131
- Richard Rowan, DMDMerced, CA 953401689995367
- Samuel Sheu, D.D.S.Merced, CA 953401952495905
- Jeremy Skinner, D.D.S.Merced, CA 953401164749933
Common questions
What is Spencer Karl Rowan, DDS's NPI number?
Spencer Karl Rowan, DDS's National Provider Identifier (NPI) is 1457750572, issued on Aug 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Spencer Karl Rowan, DDS located?
The NPPES record lists a practice address at 631 W 25TH St, Merced, CA, 95340. Phone: (209) 383-9187. Providers update this record themselves, so call before visiting.
How can I verify Spencer Karl Rowan, DDS's license?
NPPES lists California license number 64457, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Spencer Karl Rowan, DDS prescribe under Medicare Part D?
In 2024, Spencer Karl Rowan, DDS had 74 Medicare Part D claims for 55 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.