Summer Mercier
Speech-Language Pathologist · Upland, CA
Summer Mercier is a speech-language pathologist with a practice address in Upland, California, and NPI 1245004621, issued on Nov 7, 2023. Check the license (California 25722, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Summer Mercier
- Primary taxonomy
- Speech-Language Pathologist 235Z00000X
- License number
- 25722 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 N Mountain Ave Ste 109A, Upland, CA 91786
- Phone
- (909) 610-9151
- Enumerated
- Nov 7, 2023
- Record last updated
- Nov 7, 2023
- Entity
- Type 1 · individual
8 nearest speech-language pathologist records → All 13,141 in California → Look up another NPI →
Also registered at 222 N Mountain Ave Ste 109A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marisol AcostaSpeech-Language Pathologist1215769070
- Michelle CantrellSpeech-Language Assistant1194519553
- Ellen Dendinger, NONESpeech-Language Pathologist1497498505
- Monique MartinezSpeech-Language Assistant1265295695
- Ashleen Mobley, MS, CCC-SLPSpeech-Language Pathologist1740900349
- Lauryn PazSpeech-Language Assistant1124826664
Verify Summer Mercier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 25722Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Summer Mercier among 13,141 speech-language pathologist records in California
Summer Mercier is one of 13,141 speech-language pathologist records with a practice address in California. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 67% of them.
- NPI issued2023 · 67% of these records are older, 29% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2023 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 235Z00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 speech-language pathologist records list a practice address in Upland
They are 22 of the 1,846 NPPES records with a practice address in Upland, and 13,141 speech-language pathologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 13,141 in California → Every provider in Upland → Speech-Language Pathologist nationwide →
The 8 speech-language pathologist records with the nearest ZIP codes
- Marisol AcostaUpland, CA 917861215769070
- Shana DahlanUpland, CA 917861013883339
- Ellen Dendinger, NONEUpland, CA 917861497498505
- Victoria Erb, CCC-SLPUpland, CA 917861386259257
- Miriam Hsieh, SPEECH PATHOLOGISTUpland, CA 917861508180233
- Sarah Hsieh, M.S., CCC-SLPUpland, CA 917861487330965
- Robert KratzUpland, CA 917861992072870
- Ashleen Mobley, MS, CCC-SLPUpland, CA 917861740900349
Common questions
What is Summer Mercier's NPI number?
Summer Mercier's National Provider Identifier (NPI) is 1245004621, issued on Nov 7, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Summer Mercier located?
The NPPES record lists a practice address at 222 N Mountain Ave Ste 109A, Upland, CA, 91786. Phone: (909) 610-9151. Providers update this record themselves, so call before visiting.
How can I verify Summer Mercier's license?
NPPES lists California license number 25722, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.