Katherine Lin Matsumoto, FNP-BC
Family Nurse Practitioner · Irvine, CA
Katherine Lin Matsumoto, FNP-BC is a family nurse practitioner with a practice address in Irvine, California, and NPI 1003322306, issued on Dec 21, 2017. Check the license (California 95007597, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Lin Matsumoto
- Credential
- FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 95007597 CA
810661 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Osborn St Ste 180, Irvine, CA 92604
- Phone
- (949) 417-9820
- Enumerated
- Dec 21, 2017
- Record last updated
- Jan 16, 2026
- Fax
- (949) 417-9830
- Medicare enrollment
- Enrolled (PECOS I20171228002758); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 2 Osborn St Ste 180
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ronald Young, MDFamily Medicine Physician1740221746
Verify Katherine Lin Matsumoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95007597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average family nurse practitioner in 2024
2,393 Medicare Part D claims for 564 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 101 claims were for opioids.
Most prescribed
- Levothyroxine Sodium183 claims
- Atorvastatin Calcium130 claims
- Amlodipine Besylate102 claims
- Losartan Potassium77 claims
- Alprazolam61 claims
- Lisinopril58 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.
Bills Medicare through one group practice
- Irvine Family Care Inc.Irvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Lin Matsumoto among 16,966 family nurse practitioner records in California
Katherine Lin Matsumoto, FNP-BC is one of 16,966 family nurse practitioner records with a practice address in California. 67% 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 40% of them.
- NPI issued2017 · 40% of these records are older, 55% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2017 · median 2019 among the 6,793 with a school on file
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
152 family nurse practitioner records list a practice address in Irvine
They are 152 of the 7,778 NPPES records with a practice address in Irvine, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Irvine → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Karizza Asper, DNPIrvine, CA 926041316287055
- Romina Francesca Bagsic, FNP-CIrvine, CA 926041932565223
- Keri Blasingame, NPIrvine, CA 926041184016230
- Sarah Campbell, N.P.Irvine, CA 926041881967040
- Nancy Evans, RNCIrvine, CA 926041679693055
- Lixia Goble, NP-CIrvine, CA 926041699830356
- Nancy McGinn, RN,MSN,FNP-BCIrvine, CA 926041043254998
- Salma NawabiIrvine, CA 926041013197946
Common questions
What is Katherine Lin Matsumoto, FNP-BC's NPI number?
Katherine Lin Matsumoto, FNP-BC's National Provider Identifier (NPI) is 1003322306, issued on Dec 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Lin Matsumoto, FNP-BC located?
The NPPES record lists a practice address at 2 Osborn St Ste 180, Irvine, CA, 92604. Phone: (949) 417-9820. Providers update this record themselves, so call before visiting.
How can I verify Katherine Lin Matsumoto, FNP-BC's license?
NPPES lists California license number 95007597, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Lin Matsumoto, FNP-BC prescribe under Medicare Part D?
In 2024, Katherine Lin Matsumoto, FNP-BC had 2,393 Medicare Part D claims for 564 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.