Josephine Chen, FNP, RN
Family Nurse Practitioner · Walnut Creek, CA
Josephine Chen, FNP, RN is a family nurse practitioner with a practice address in Walnut Creek, California, and NPI 1790175214, issued on Feb 4, 2015. Check the license (California 95001968, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Josephine Chen
- Credential
- FNP, RN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95001968 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2621 Shadelands Dr, Walnut Creek, CA 94598
- Phone
- (925) 947-0417
- Enumerated
- Feb 4, 2015
- Record last updated
- Jul 13, 2026
- Fax
- (925) 947-4379
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 2621 Shadelands Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Noushin Haddad-Tehrani, MDInternal Medicine Physician1215988878
- Felix Vergilis, DOFamily Medicine Physician1144960592
Verify Josephine Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95001968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% more Medicare Part D claims than the average family nurse practitioner in 2024
2,283 Medicare Part D claims for 415 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 22 claims were for opioids.
Most prescribed
- Amlodipine Besylate155 claims
- Atorvastatin Calcium139 claims
- Losartan Potassium77 claims
- Metformin Hcl63 claims
- Levothyroxine Sodium62 claims
- Tamsulosin Hcl52 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: $336.61
13 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 99,489 providers of this specialty with any payment received $650.95 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.
Josephine Chen among 16,966 family nurse practitioner records in California
Josephine Chen, FNP, RN 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 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- 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).
107 family nurse practitioner records list a practice address in Walnut Creek
They are 107 of the 6,170 NPPES records with a practice address in Walnut Creek, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Walnut Creek → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Cheri Arbizu, MSN, FNPWalnut Creek, CA 945981205922630
- Shellie Campos, NPWalnut Creek, CA 945981982871331
- Melanie Charles, N.P.Walnut Creek, CA 945981972792950
- Ronald Connolly, FNPWalnut Creek, CA 945981710296116
- Janice Dolan, MSN/FNPWalnut Creek, CA 945981982680864
- Martha Eppenberger, FNPWalnut Creek, CA 945981710284096
- Sylvia Esperanza, NPWalnut Creek, CA 945981104067297
- Shawna Joaquin, NP-CWalnut Creek, CA 945981942436811
Common questions
What is Josephine Chen, FNP, RN's NPI number?
Josephine Chen, FNP, RN's National Provider Identifier (NPI) is 1790175214, issued on Feb 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Josephine Chen, FNP, RN located?
The NPPES record lists a practice address at 2621 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 947-0417. Providers update this record themselves, so call before visiting.
How can I verify Josephine Chen, FNP, RN's license?
NPPES lists California license number 95001968, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Josephine Chen, FNP, RN prescribe under Medicare Part D?
In 2024, Josephine Chen, FNP, RN had 2,283 Medicare Part D claims for 415 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.