Catherine Mascarenas, MS, FNP-C
NPI 1043347065 · Nurse Practitioner · Littleton, CO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Mascarenas, MS, FNP-C is a Nurse Practitioner provider in Littleton, CO (NPI 1043347065).
Provider details
- NPI number
- 1043347065
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MS, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 118557 (CO)
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 tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 116 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 317 | 40 |
| Atorvastatin Calcium | 262 | 39 |
| Lisinopril | 225 | 32 |
| Furosemide | 206 | 29 |
| Omeprazole | 190 | 27 |
| Amlodipine Besylate | 171 | 25 |
| Gabapentin | 146 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-27
- Last updated
- 2025-09-09
- Certified
- 2025-09-09
Frequently asked questions
- What is Catherine Mascarenas's NPI number?
- Catherine Mascarenas's National Provider Identifier (NPI) is 1043347065, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Mascarenas's specialty?
- Catherine Mascarenas is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Mascarenas located?
- Catherine Mascarenas's practice location on file with NPPES is 7175 W Fremont Pl, Littleton, CO 80128-4748.
- What is Catherine Mascarenas's phone number?
- The practice phone number listed in the NPPES registry for Catherine Mascarenas is (303) 518-1030.
- Does Catherine Mascarenas accept Medicare?
- Catherine Mascarenas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Mascarenas's NPI active?
- Yes — Catherine Mascarenas's NPI (1043347065) is active in the NPPES registry as of the last update on 2025-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.