Guillermo Carrera, MD
NPI 1821049214 · Diagnostic Radiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Carrera, MD is a Diagnostic Radiology Physician provider in Milwaukee, WI (NPI 1821049214).
Provider details
- NPI number
- 1821049214
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 20857 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
27 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) |
|---|---|---|
| X-Ray of Shoulder, Minimum of 2 Views73030 | 27 | $17 |
Typical Medicare-allowed amounts for these services range $17–$17 (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.
Practice location
Mailing address
Additional practice locations (5)
- 1905 N Calhoun RdBrookfield, WI 53005-5036Phone: (262) 754-8000Fax: (262) 780-3396
- 475 W River Woods PkwyGlendale, WI 53212-1081Phone: (414) 961-6800
- 4455 S 108th StGreenfield, WI 53228-2504Phone: (414) 427-5310Fax: (414) 427-5311
- W180n8085 Town Hall RdMenomonee Falls, WI 53051-3518Phone: (262) 257-3060Fax: (262) 253-7197
- Hospital Based @ Froedtert Hosp.9200 West Wisconsin AvenueMilwaukee, WI 53226Phone: (414) 805-3666
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Guillermo Carrera's NPI number?
- Guillermo Carrera's National Provider Identifier (NPI) is 1821049214, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Carrera's specialty?
- Guillermo Carrera is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Carrera located?
- Guillermo Carrera's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Guillermo Carrera's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Carrera is (414) 805-3044.
- Does Guillermo Carrera accept Medicare?
- Guillermo Carrera is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Carrera's NPI active?
- Yes — Guillermo Carrera's NPI (1821049214) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.