Helen Ferrer-Irwin
NPI 1629519335 · Gerontology Nurse Practitioner · Phoenix, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Ferrer-Irwin is a Gerontology Nurse Practitioner provider in Phoenix, AZ (NPI 1629519335).
Provider details
- NPI number
- 1629519335
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- AP9903 (AZ)
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
9 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
34 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 20 | $86 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 14 | $40 |
Typical Medicare-allowed amounts for these services range $40–$86 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 65 | 29 |
| Metformin Hcl | 47 | 15 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 41 | 18 |
| Gabapentin | 39 | 19 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 35 | 17 |
| Amlodipine Besylate | 33 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-14
- Last updated
- 2017-03-14
Frequently asked questions
- What is Helen Ferrer-Irwin's NPI number?
- Helen Ferrer-Irwin's National Provider Identifier (NPI) is 1629519335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Ferrer-Irwin's specialty?
- Helen Ferrer-Irwin is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Helen Ferrer-Irwin located?
- Helen Ferrer-Irwin's practice location on file with NPPES is 2510 W Dunlap Ave, Phoenix, AZ 85021-2737.
- What is Helen Ferrer-Irwin's phone number?
- The practice phone number listed in the NPPES registry for Helen Ferrer-Irwin is (602) 789-0344.
- Does Helen Ferrer-Irwin accept Medicare?
- Helen Ferrer-Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Ferrer-Irwin's NPI active?
- Yes — Helen Ferrer-Irwin's NPI (1629519335) is active in the NPPES registry as of the last update on 2017-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.