Corey Robert Tiller, PA
Physician Assistant · Chino Hills, CA
Corey Robert Tiller, PA is a physician assistant with a practice address in Chino Hills, California, and NPI 1982122776, issued on Sep 1, 2017. Check the license (California 54880, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Corey Robert Tiller
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 54880 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1737 Walnut Creek Drive, Chino Hills, CA 91709
- Phone
- (909) 263-3672
- Enumerated
- Sep 1, 2017
- Record last updated
- Jul 21, 2022
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Corey Robert Tiller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 54880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average physician assistant in 2024
334 Medicare Part D claims for 227 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 46 claims were for opioids.
Most prescribed
- Ibuprofen39 claims
- Cephalexin28 claims
- Ondansetron Odt22 claims
- Tramadol Hcl20 claims
- Hydrocodone-Acetaminophen16 claims
- Nitrofurantoin Mono-Macro15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $17.17
1 payment: food and beverage; the largest payer was Xeris Pharmaceuticals, Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Corey Robert Tiller among 14,451 physician assistant records in California
Corey Robert Tiller, PA is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 47% of them.
- NPI issued2017 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 physician assistant records list a practice address in Chino Hills
They are 22 of the 774 NPPES records with a practice address in Chino Hills, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Chino Hills → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Stephanie Chamani, PA-CChino Hills, CA 917091104949858
- Ivy Chow, PA-CChino Hills, CA 917091235533670
- Pamela Farah, PA-CChino Hills, CA 917091972088763
- Jennifer Holman, PA-CChino Hills, CA 917091942676663
- Esther HwangChino Hills, CA 917091851696595
- Tiffany Katuls, PA-CChino Hills, CA 917091982911012
- Elizabeth LeeChino Hills, CA 917091407515224
- Jennifer Lyons, PA-CChino Hills, CA 917091730215401
Common questions
What is Corey Robert Tiller, PA's NPI number?
Corey Robert Tiller, PA's National Provider Identifier (NPI) is 1982122776, issued on Sep 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Corey Robert Tiller, PA located?
The NPPES record lists a practice address at 1737 Walnut Creek Drive, Chino Hills, CA, 91709. Phone: (909) 263-3672. Providers update this record themselves, so call before visiting.
How can I verify Corey Robert Tiller, PA's license?
NPPES lists California license number 54880, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Corey Robert Tiller, PA prescribe under Medicare Part D?
In 2024, Corey Robert Tiller, PA had 334 Medicare Part D claims for 227 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Corey Robert Tiller, PA's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.