Theresa Klein, APNP
NPI 1598195372 · Nurse Practitioner · Glendale, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Klein, APNP is a Nurse Practitioner provider in Glendale, WI (NPI 1598195372).
Provider details
- NPI number
- 1598195372
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 5599 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
134 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 95 | $142 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 39 | $114 |
Typical Medicare-allowed amounts for these services range $114–$142 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-11-15
- Last updated
- 2016-11-21
Frequently asked questions
- What is Theresa Klein's NPI number?
- Theresa Klein's National Provider Identifier (NPI) is 1598195372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Klein's specialty?
- Theresa Klein is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Klein located?
- Theresa Klein's practice location on file with NPPES is 475 W River Woods Pkwy, Glendale, WI 53212-1081.
- What is Theresa Klein's phone number?
- The practice phone number listed in the NPPES registry for Theresa Klein is (414) 961-6767.
- Does Theresa Klein accept Medicare?
- Theresa Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Klein's NPI active?
- Yes — Theresa Klein's NPI (1598195372) is active in the NPPES registry as of the last update on 2016-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.