Ann Erwin, MD
NPI 1851494223 · Family Medicine Physician · Boise, ID
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Erwin, MD is a Family Medicine Physician provider in Boise, ID (NPI 1851494223).
Provider details
- NPI number
- 1851494223
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- M6541 (ID)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
394 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 | 187 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 147 | $61 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 34 | $90 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 26 | $61 |
Typical Medicare-allowed amounts for these services range $61–$90 (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 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 507 | 143 |
| Losartan Potassium | 434 | 114 |
| Levothyroxine Sodium | 404 | 107 |
| Amlodipine Besylate | 314 | 82 |
| Omeprazole | 274 | 87 |
| Alendronate Sodium | 203 | 61 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-07
- Last updated
- 2011-03-10
Frequently asked questions
- What is Ann Erwin's NPI number?
- Ann Erwin's National Provider Identifier (NPI) is 1851494223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Erwin's specialty?
- Ann Erwin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Erwin located?
- Ann Erwin's practice location on file with NPPES is 130 E Boise Ave, Boise, ID 83706.
- What is Ann Erwin's phone number?
- The practice phone number listed in the NPPES registry for Ann Erwin is (208) 345-4066.
- Does Ann Erwin accept Medicare?
- Ann Erwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Erwin's NPI active?
- Yes — Ann Erwin's NPI (1851494223) is active in the NPPES registry as of the last update on 2011-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.