Cory Zastrow, DO
NPI 1699355842 · Family Medicine Physician · Eau Claire, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cory Zastrow, DO is a Family Medicine Physician provider in Eau Claire, WI (NPI 1699355842).
Provider details
- NPI number
- 1699355842
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 81052 (WI)
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
5 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
40 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 19 | $124 |
Typical Medicare-allowed amounts for these services range $88–$124 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Apixabanbrand: Eliquis | 40 |
| Atorvastatin Calcium | 20 |
| Sertraline Hcl | 16 |
| Metoprolol Tartrate | 16 |
| Metformin Hcl | 15 |
| Levothyroxine Sodium | 15 |
| Gabapentin | 15 |
| Mirabegronbrand: Myrbetriq | 15 |
| Furosemide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-04-12
- Last updated
- 2024-05-22
- Certified
- 2024-05-22
Frequently asked questions
- What is Cory Zastrow's NPI number?
- Cory Zastrow's National Provider Identifier (NPI) is 1699355842, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cory Zastrow's specialty?
- Cory Zastrow is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cory Zastrow located?
- Cory Zastrow's practice location on file with NPPES is 617 W Clairemont Ave, Eau Claire, WI 54701-6223.
- What is Cory Zastrow's phone number?
- The practice phone number listed in the NPPES registry for Cory Zastrow is (715) 839-5175.
- Does Cory Zastrow accept Medicare?
- Cory Zastrow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cory Zastrow's NPI active?
- Yes — Cory Zastrow's NPI (1699355842) is active in the NPPES registry as of the last update on 2024-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.