Karen Anstey, M.D.
NPI 1457791261 · Allergy & Immunology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Anstey, M.D. is a Allergy & Immunology Physician provider in Portland, OR (NPI 1457791261).
Provider details
- NPI number
- 1457791261
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD198556 (OR)
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
12 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
46 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 | 18 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $82 |
| Telephone, Internet, Or Electronic Health Record Assessment and Management With Written Report By Consulting Physician, at Least 5 Minutes99451 | 12 | $36 |
Typical Medicare-allowed amounts for these services range $36–$129 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 27 | 14 |
| Montelukast Sodium | 24 | — |
| C1 Esterase Inhibitorbrand: Berinert | 15 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 13 | — |
| Mepolizumabbrand: Nucala | 12 | — |
| Epinephrine | 11 | — |
| Immun Glob G(igg)/Gly/Iga Ov50brand: Gammagard Liquid |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-26
- Last updated
- 2020-06-01
- Certified
- 2020-06-01
Frequently asked questions
- What is Karen Anstey's NPI number?
- Karen Anstey's National Provider Identifier (NPI) is 1457791261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Anstey's specialty?
- Karen Anstey is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Anstey located?
- Karen Anstey's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.
- What is Karen Anstey's phone number?
- The practice phone number listed in the NPPES registry for Karen Anstey is (503) 494-7680.
- Does Karen Anstey accept Medicare?
- Karen Anstey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Anstey's NPI active?
- Yes — Karen Anstey's NPI (1457791261) is active in the NPPES registry as of the last update on 2020-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.