Michael Olaciregui, M.D.
NPI 1811094972 · Internal Medicine Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Olaciregui, M.D. is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1811094972).
Provider details
- NPI number
- 1811094972
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 42851-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
56 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $169 |
Typical Medicare-allowed amounts for these services range $169–$169 (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 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 171 | 42 |
| Levothyroxine Sodium | 161 | 24 |
| Dapagliflozin Propanediolbrand: Farxiga | 155 | 26 |
| Gabapentin | 119 | 19 |
| Lisinopril | 112 | 26 |
| Ipratropium/Albuterol Sulfatebrand: Combivent Respimat | 97 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$508 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Olaciregui's NPI number?
- Michael Olaciregui's National Provider Identifier (NPI) is 1811094972, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Olaciregui's specialty?
- Michael Olaciregui is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Olaciregui located?
- Michael Olaciregui's practice location on file with NPPES is 573 W Lincoln Ave, Milwaukee, WI 53207-1141.
- What is Michael Olaciregui's phone number?
- The practice phone number listed in the NPPES registry for Michael Olaciregui is (414) 385-9801.
- Does Michael Olaciregui accept Medicare?
- Michael Olaciregui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Olaciregui's NPI active?
- Yes — Michael Olaciregui's NPI (1811094972) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.