Maki Matsumura, NP-C
Nurse Practitioner · Walnut Creek, CA
Maki Matsumura, NP-C is a nurse practitioner with a practice address in Walnut Creek, California, and NPI 1013316488, issued on Aug 21, 2014. Check the license (California 95001105, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maki Matsumura
- Credential
- NP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95001105 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1450 Treat Blvd Ste 250A, Walnut Creek, CA 94597
- Phone
- (925) 296-9740
- Enumerated
- Aug 21, 2014
- Record last updated
- Oct 7, 2022
- Fax
- (925) 296-9062
- Medicare enrollment
- Enrolled (PECOS I20141009000006); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 1450 Treat Blvd Ste 250A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Darnell, DOFamily Medicine Physician1760829618
- Libre Johnson, M.D.Family Medicine Physician1770683658
Verify Maki Matsumura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95001105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% more Medicare Part D claims than the average nurse practitioner in 2024
1,782 Medicare Part D claims for 458 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium145 claims
- Losartan Potassium79 claims
- Amlodipine Besylate73 claims
- Levothyroxine Sodium69 claims
- Gabapentin66 claims
- Alendronate Sodium52 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: $75.82
3 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 38,884 providers of this specialty with any payment received $791.64 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.
Bills Medicare through one group practice
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maki Matsumura among 8,223 nurse practitioner records in California
Maki Matsumura, NP-C is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 42% of them.
- NPI issued2014 · 42% of these records are older, 55% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2014 · median 2017 among the 3,425 with a school on file
- Record last updated2022 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
70 nurse practitioner records list a practice address in Walnut Creek
They are 70 of the 6,170 NPPES records with a practice address in Walnut Creek, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Walnut Creek → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Janette CarlinWalnut Creek, CA 945971992382246
- Allison Friede, NPWalnut Creek, CA 945971245794098
- Yajuan Leonard, APRNWalnut Creek, CA 945971336160456
- Helen Lu, FNPWalnut Creek, CA 945971639510332
- Puja Sarna, NPWalnut Creek, CA 945971609322817
- Karen Sonnenthal, N.P.Walnut Creek, CA 945971942229463
- Renita Vinluan-Fan, NPWalnut Creek, CA 945971265765754
- Sarah Berg, NPWalnut Creek, CA 945981427062975
Common questions
What is Maki Matsumura, NP-C's NPI number?
Maki Matsumura, NP-C's National Provider Identifier (NPI) is 1013316488, issued on Aug 21, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Maki Matsumura, NP-C located?
The NPPES record lists a practice address at 1450 Treat Blvd Ste 250A, Walnut Creek, CA, 94597. Phone: (925) 296-9740. Providers update this record themselves, so call before visiting.
How can I verify Maki Matsumura, NP-C's license?
NPPES lists California license number 95001105, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Maki Matsumura, NP-C prescribe under Medicare Part D?
In 2024, Maki Matsumura, NP-C had 1,782 Medicare Part D claims for 458 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.