Rosmarie Ahsan, PA-C
Physician Assistant · Irvine, CA
Rosmarie Ahsan, PA-C is a physician assistant with a practice address in Irvine, California, and NPI 1275084089, issued on Oct 17, 2016. Check the license (California 53920, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rosmarie Ahsan
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 53920 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19191 Norwood Ter, Irvine, CA 92603
- Phone
- (760) 408-7142
- Enumerated
- Oct 17, 2016
- Record last updated
- Oct 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Rosmarie Ahsan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average physician assistant in 2024
442 Medicare Part D claims for 63 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Metformin Hcl55 claims
- Atorvastatin Calcium52 claims
- Lisinopril29 claims
- Tamsulosin Hcl26 claims
- Levothyroxine Sodium25 claims
- Amlodipine Besylate18 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.
Industry payments in 2024: $42.29
2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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.
Rosmarie Ahsan among 14,451 physician assistant records in California
Rosmarie Ahsan, 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 fileNo · 50% of these records are
- Record last updated2016 · 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).
120 physician assistant records list a practice address in Irvine
They are 120 of the 7,778 NPPES records with a practice address in Irvine, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Irvine → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Darlene Vuong, PA-CIrvine, CA 926031730553173
- Laila Ayaz, PAIrvine, CA 926021417108861
- Kelsey Chan, PAIrvine, CA 926041003284811
- Thao Duong, PAIrvine, CA 926021326326570
- Kevin Haley, P.A.Irvine, CA 926041730235383
- Elika Kamdar, PA-C, MMSIrvine, CA 926041578998589
- Nancy Murray, PA-CIrvine, CA 926041619117843
- Alison Omel, P.A.Irvine, CA 926041093856676
Common questions
What is Rosmarie Ahsan, PA-C's NPI number?
Rosmarie Ahsan, PA-C's National Provider Identifier (NPI) is 1275084089, issued on Oct 17, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Rosmarie Ahsan, PA-C located?
The NPPES record lists a practice address at 19191 Norwood Ter, Irvine, CA, 92603. Phone: (760) 408-7142. Providers update this record themselves, so call before visiting.
How can I verify Rosmarie Ahsan, PA-C's license?
NPPES lists California license number 53920, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Rosmarie Ahsan, PA-C prescribe under Medicare Part D?
In 2024, Rosmarie Ahsan, PA-C had 442 Medicare Part D claims for 63 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.