Katherine Elizabeth Oberwager, CNP
Psychiatric/Mental Health Nurse Practitioner · Springfield, MA
Katherine Elizabeth Oberwager, CNP is a psychiatric/mental health nurse practitioner with a practice address in Springfield, Massachusetts, and NPI 1013432186, issued on Aug 9, 2017. Check the license (Massachusetts RN2316926, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Elizabeth Oberwager
- Credential
- CNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- RN2316926 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Carew St, Springfield, MA 01104
- Phone
- (413) 794-1038
- Enumerated
- Aug 9, 2017
- Record last updated
- Apr 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20171017001988); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,169 in Massachusetts → Look up another NPI →
Also registered at 300 Carew St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Caraballo, NPPsychiatric/Mental Health Nurse Practitioner1932762440
- William Flanagan, PSY.D.Marriage & Family Therapist1407058035
- Hayley Johnson, PSYDClinical Psychologist1811707862
- Logan LargeStudent in an Organized Health Care Education/Training Program1871315853
- Thomas McDowell, PACPhysician Assistant1376625061
- Natasha McKay, M.D.Neurological Surgery Physician1033162235
Verify Katherine Elizabeth Oberwager in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2316926Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
28 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Clonidine Hcl11 claims
- Escitalopram Oxalate11 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
- Baystate Medical Practices IncHolyoke, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Elizabeth Oberwager among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts
Katherine Elizabeth Oberwager, CNP is one of 2,169 psychiatric/mental health nurse practitioner records with a practice address in Massachusetts. 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 2017, is newer than 32% of them.
- NPI issued2017 · 32% of these records are older, 65% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2017 · median 2021 among the 1,309 with a school on file
- Record last updated2025 · 23% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Massachusetts
There are 2,169 psychiatric/mental health nurse practitioner records in Massachusetts.
All 2,169 in Massachusetts → Every provider in Springfield → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Stefanie BeaucheminSpringfield, MA 011041477061463
- Jennifer Caraballo, NPSpringfield, MA 011041932762440
- Marylouise DemickSpringfield, MA 011041538524848
- Gillian Graham, PMHNP-BCSpringfield, MA 011041154798411
- Anne KoneruSpringfield, MA 011041992940365
- Wendy Libowitz, APRNSpringfield, MA 011041629567144
- Emily MaloSpringfield, MA 011041669034773
- Cassandra Nava, PMHNP-BCSpringfield, MA 011041013447432
Common questions
What is Katherine Elizabeth Oberwager, CNP's NPI number?
Katherine Elizabeth Oberwager, CNP's National Provider Identifier (NPI) is 1013432186, issued on Aug 9, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Elizabeth Oberwager, CNP located?
The NPPES record lists a practice address at 300 Carew St, Springfield, MA, 01104. Phone: (413) 794-1038. Providers update this record themselves, so call before visiting.
How can I verify Katherine Elizabeth Oberwager, CNP's license?
NPPES lists Massachusetts license number RN2316926, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Elizabeth Oberwager, CNP prescribe under Medicare Part D?
In 2024, Katherine Elizabeth Oberwager, CNP had 28 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.