Ross Mamaril, FNP
NPI 1043845027 · Family Nurse Practitioner · Chicago, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ross Mamaril, FNP is a Family Nurse Practitioner provider in Chicago, IL (NPI 1043845027).
Provider details
- NPI number
- 1043845027
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Male
- Sole proprietor
- No
- License
- 209.020575 (IL)
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
6 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
1,980 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,412 | $93 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 238 | $94 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 145 | $64 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 138 | $115 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 25 | $156 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 643 | 55 |
| Hydralazine Hcl | 223 | 32 |
| Losartan Potassium | 194 | 35 |
| Furosemide | 184 | 41 |
| Amlodipine Besylate | 177 | 25 |
| Empagliflozinbrand: Jardiance | 171 | 31 |
| Apixabanbrand: Eliquis |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-10
- Last updated
- 2020-03-10
- Certified
- 2020-03-10
Frequently asked questions
- What is Ross Mamaril's NPI number?
- Ross Mamaril's National Provider Identifier (NPI) is 1043845027, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ross Mamaril's specialty?
- Ross Mamaril is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ross Mamaril located?
- Ross Mamaril's practice location on file with NPPES is 4815 S Western Blvd, Chicago, IL 60609-4067.
- What is Ross Mamaril's phone number?
- The practice phone number listed in the NPPES registry for Ross Mamaril is (773) 927-4200.
- Does Ross Mamaril accept Medicare?
- Ross Mamaril is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ross Mamaril's NPI active?
- Yes — Ross Mamaril's NPI (1043845027) is active in the NPPES registry as of the last update on 2020-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.