Lauren Kelly Crostic, PA-C
Physician Assistant · Fontana, CA
Lauren Kelly Crostic, PA-C is a physician assistant with a practice address in Fontana, California, and NPI 1215385448, issued on May 27, 2016. Check the license (California PA53720, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lauren Kelly Crostic
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA53720 CA
Self-reported in NPPES; status is on the state search - Practice location
- 16465 Sierra Lakes Pkwy, Fontana, CA 92336
- Phone
- (909) 429-2864
- Enumerated
- May 27, 2016
- Record last updated
- Nov 14, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20250811003717); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 16465 Sierra Lakes Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Uzma Ali, MDSpecialist1376629261
- Raynard CastilloPsychiatric/Mental Health Nurse Practitioner1437586047
- Adriana Cornejo, CPNPPediatrics Physician1790201283
- Maged Ibrahim, M.D.Pediatrics Physician1306852934
- Michelle Laksana, PA-CPhysician Assistant1851709414
- Kathryn Lin, MDPediatrics Physician1033267943
Verify Lauren Kelly Crostic in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA53720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average physician assistant in 2024
401 Medicare Part D claims for 172 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium37 claims
- Levothyroxine Sodium18 claims
- Losartan Potassium18 claims
- Metformin Hcl15 claims
- Amlodipine Besylate14 claims
- Lisinopril14 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.
Lauren Kelly Crostic among 14,451 physician assistant records in California
Lauren Kelly Crostic, PA-C 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 2016, is newer than 44% of them.
- NPI issued2016 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2016 · median 2018 among the 7,214 with a school on file
- Record last updated2018 · 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).
97 physician assistant records list a practice address in Fontana
They are 97 of the 3,012 NPPES records with a practice address in Fontana, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fontana → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Martha Ajca, P.A.CFontana, CA 923361396175758
- Yaw Asamoah, PA-CFontana, CA 923361083917439
- Khristine Marie Bueno, PA-CFontana, CA 923361811356439
- Giuliana Cilliani, PA-CFontana, CA 923361043504913
- Natalie Herrera, PA-CFontana, CA 923361407237498
- Emanuel Jean-Pierre, PA-CFontana, CA 923361649306457
- Michelle Laksana, PA-CFontana, CA 923361851709414
- Jackeline Lopez, PA-C, RDNFontana, CA 923361295246692
Common questions
What is Lauren Kelly Crostic, PA-C's NPI number?
Lauren Kelly Crostic, PA-C's National Provider Identifier (NPI) is 1215385448, issued on May 27, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Lauren Kelly Crostic, PA-C located?
The NPPES record lists a practice address at 16465 Sierra Lakes Pkwy, Fontana, CA, 92336. Phone: (909) 429-2864. Providers update this record themselves, so call before visiting.
How can I verify Lauren Kelly Crostic, PA-C's license?
NPPES lists California license number PA53720, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Lauren Kelly Crostic, PA-C prescribe under Medicare Part D?
In 2024, Lauren Kelly Crostic, PA-C had 401 Medicare Part D claims for 172 beneficiaries; the average among physician assistant prescribers was 830. 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.