Kimberly Dionne Oja, NP
Adult Health Nurse Practitioner · Walnut Creek, CA
Kimberly Dionne Oja, NP is an adult health nurse practitioner with a practice address in Walnut Creek, California, and NPI 1396245064, issued on Feb 19, 2018. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kimberly Dionne Oja
- Credential
- NP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 85124 NM
Self-reported in NPPES; status is on the state search - Practice location
- 2637 Shadelands Dr, Walnut Creek, CA 94598
- Phone
- (925) 378-4517
- Enumerated
- Feb 19, 2018
- Record last updated
- Aug 18, 2025
- Fax
- (925) 273-7255
- Medicare enrollment
- Enrolled (PECOS I20260106003384); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 1,405 in California → Look up another NPI →
Also registered at 2637 Shadelands Dr
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Verify Kimberly Dionne Oja in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average adult health nurse practitioner in 2024
1,499 Medicare Part D claims for 358 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 11 claims were for opioids.
Most prescribed
- Finasteride190 claims
- Myrbetriq151 claims
- Tamsulosin Hcl122 claims
- Gemtesa104 claims
- Methenamine Hippurate85 claims
- Estradiol59 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: $1,866.15
54 payments; by number, the most common kind was food and beverage; the largest payer was Bluewind Medical. The 12,291 providers of this specialty with any payment received $946.40 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
- St Vincent HospitalSanta Fe, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kimberly Dionne Oja among 1,405 adult health nurse practitioner records in California
Kimberly Dionne Oja, NP is one of 1,405 adult health nurse practitioner records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 77% of them.
- NPI issued2018 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileYes · 31% of these records are
- Graduated2017 · median 2013 among the 441 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in California
There are 1,405 adult health nurse practitioner records in California.
All 1,405 in California → Every provider in Walnut Creek → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Gwendolyn Cashman, N.P.Walnut Creek, CA 945981720057037
- Li Chen, N.P.Walnut Creek, CA 945981336232560
- Laura Davis, N.P.Walnut Creek, CA 945981982936068
- Tricia McNeal, AGNPWalnut Creek, CA 945981902299506
- Vivian Park, N.P.Walnut Creek, CA 945981932533452
- Katherine Sieu, RN, NPWalnut Creek, CA 945981356591085
- Terilyn Voegtle, APRN, BCWalnut Creek, CA 945981063670743
- Zachary Johnston, NPWalnut Creek, CA 945971730075623
Common questions
What is Kimberly Dionne Oja, NP's NPI number?
Kimberly Dionne Oja, NP's National Provider Identifier (NPI) is 1396245064, issued on Feb 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Kimberly Dionne Oja, NP located?
The NPPES record lists a practice address at 2637 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 378-4517. Providers update this record themselves, so call before visiting.
How can I verify Kimberly Dionne Oja, NP's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kimberly Dionne Oja, NP prescribe under Medicare Part D?
In 2024, Kimberly Dionne Oja, NP had 1,499 Medicare Part D claims for 358 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.