Tamara M. Castillo Oconnor, FNP-C
Family Nurse Practitioner · Wauwatosa, WI
Tamara M. Castillo Oconnor, FNP-C is a family nurse practitioner with a practice address in Wauwatosa, Wisconsin, and NPI 1619738473, issued on Jan 18, 2024. Check the license (Wisconsin 14703-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tamara M. Castillo Oconnor
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 14703-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- 11220 W Burleigh St # 100, Wauwatosa, WI 53222
- Phone
- (833) 247-9616
- Enumerated
- Jan 18, 2024
- Record last updated
- Jan 18, 2024
- Medicare enrollment
- Enrolled (PECOS I20241011001764); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →
Verify Tamara M. Castillo Oconnor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 14703-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
25 Medicare Part D claims for 21 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
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 2 group practices
- Comprehensive Rehab Consultants PLLCBeaver Dam, WI
- Prohealth Medical Group IncWaukesha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamara M. Castillo Oconnor among 2,814 family nurse practitioner records in Wisconsin
Tamara M. Castillo Oconnor, FNP-C is one of 2,814 family nurse practitioner records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 85% of them.
- NPI issued2024 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · median 2019 among the 1,740 with a school on file
- Record last updated2024 · 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 family nurse practitioner records list a practice address in Wauwatosa
They are 41 of the 1,787 NPPES records with a practice address in Wauwatosa, and 2,814 family nurse practitioner records in Wisconsin.
All 2,814 in Wisconsin → Every provider in Wauwatosa → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Stephanie Drew, FNP-CWauwatosa, WI 532221235408691
- Alberta Essuman, APNPMilwaukee, WI 532221154515104
- Theresa Hoppe, DNP, FNP-BC, APNPMilwaukee, WI 532221609587518
- Jacinda Hurt, APNPWauwatosa, WI 532221427244599
- Sandi Kindig Oguzlu, FNPBC-APNPWauwatosa, WI 532221184049595
- Evelyn Merriett, APRN-CMilwaukee, WI 532221629197660
- Choua VangMilwaukee, WI 532221306518295
- April Weber, FNP-BCWauwatosa, WI 532221073092979
Common questions
What is Tamara M. Castillo Oconnor, FNP-C's NPI number?
Tamara M. Castillo Oconnor, FNP-C's National Provider Identifier (NPI) is 1619738473, issued on Jan 18, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Tamara M. Castillo Oconnor, FNP-C located?
The NPPES record lists a practice address at 11220 W Burleigh St # 100, Wauwatosa, WI, 53222. Phone: (833) 247-9616. Providers update this record themselves, so call before visiting.
How can I verify Tamara M. Castillo Oconnor, FNP-C's license?
NPPES lists Wisconsin license number 14703-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Tamara M. Castillo Oconnor, FNP-C prescribe under Medicare Part D?
In 2024, Tamara M. Castillo Oconnor, FNP-C had 25 Medicare Part D claims for 21 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.