Fillmore Gerardson Almiron, CRNA
NPI 1558933523 · Certified Registered Nurse Anesthetist · Saint Louis, MO
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fillmore Gerardson Almiron, CRNA is a Certified Registered Nurse Anesthetist provider in Saint Louis, MO (NPI 1558933523).
Provider details
- NPI number
- 1558933523
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- No
- License
- 2022004950 (MO)
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
4 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
77 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) |
|---|---|---|
| Anesthesia for Procedure on Heart and Large Blood Vessels00560 | 25 | $259 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 18 | $126 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 18 | $42 |
| Anesthesia for X-Ray on Artery of Brain, Heart, Or Chest01926 | 16 | $200 |
Typical Medicare-allowed amounts for these services range $42–$259 (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
- 2021-07-10
- Last updated
- 2025-04-15
- Certified
- 2022-02-08
Frequently asked questions
- What is Fillmore Gerardson Almiron's NPI number?
- Fillmore Gerardson Almiron's National Provider Identifier (NPI) is 1558933523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fillmore Gerardson Almiron's specialty?
- Fillmore Gerardson Almiron is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Fillmore Gerardson Almiron located?
- Fillmore Gerardson Almiron's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is Fillmore Gerardson Almiron's phone number?
- The practice phone number listed in the NPPES registry for Fillmore Gerardson Almiron is (800) 862-9980.
- Does Fillmore Gerardson Almiron accept Medicare?
- Fillmore Gerardson Almiron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fillmore Gerardson Almiron's NPI active?
- Yes — Fillmore Gerardson Almiron's NPI (1558933523) is active in the NPPES registry as of the last update on 2025-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.