Katherine Castillo, MSN
NPI 1598067746 · Family Nurse Practitioner · Munster, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Castillo, MSN is a Family Nurse Practitioner provider in Munster, IN (NPI 1598067746).
Provider details
- NPI number
- 1598067746
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN
- Sex
- Female
- Sole proprietor
- No
- License
- 71003535A (IN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
15 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
150 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 60 | $70 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 51 | $30 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 27 | $34 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $88 |
Typical Medicare-allowed amounts for these services range $30–$88 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 40 | 16 |
| Fluconazole | 26 | 15 |
| Triamcinolone Acetonide | 16 | 11 |
| Estrogens, Conjugatedbrand: Premarin | 15 | — |
| Medroxyprogesterone Acetate | 13 | — |
| Metronidazole | 12 | — |
| Alendronate Sodium | 11 | — |
| Nystatin | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-11-20
- Last updated
- 2026-03-23
- Certified
- 2026-03-23
Frequently asked questions
- What is Katherine Castillo's NPI number?
- Katherine Castillo's National Provider Identifier (NPI) is 1598067746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Castillo's specialty?
- Katherine Castillo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Castillo located?
- Katherine Castillo's practice location on file with NPPES is 701 Superior Ave Ste 3400, Munster, IN 46321-4037.
- What is Katherine Castillo's phone number?
- The practice phone number listed in the NPPES registry for Katherine Castillo is (219) 934-9818.
- Does Katherine Castillo accept Medicare?
- Katherine Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Castillo's NPI active?
- Yes — Katherine Castillo's NPI (1598067746) is active in the NPPES registry as of the last update on 2026-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.