Undine Vallejos, DO
NPI 1912160557 · Internal Medicine Physician · Glenview, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Undine Vallejos, DO is a Internal Medicine Physician provider in Glenview, IL (NPI 1912160557).
Provider details
- NPI number
- 1912160557
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 036121274 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 77 | 29 |
| Lisinopril | 42 | 17 |
| Gabapentin | 38 | — |
| Metformin Hcl | 38 | 16 |
| Losartan Potassium | 28 | — |
| Levothyroxine Sodium | 22 | — |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$96 across 5 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
- 2008-07-03
- Last updated
- 2016-10-07
Frequently asked questions
- What is Undine Vallejos's NPI number?
- Undine Vallejos's National Provider Identifier (NPI) is 1912160557, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Undine Vallejos's specialty?
- Undine Vallejos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Undine Vallejos located?
- Undine Vallejos's practice location on file with NPPES is 2100 Pfingsten Rd, Glenview, IL 60026-1301.
- What is Undine Vallejos's phone number?
- The practice phone number listed in the NPPES registry for Undine Vallejos is (847) 657-5800.
- Does Undine Vallejos accept Medicare?
- Undine Vallejos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Undine Vallejos's NPI active?
- Yes — Undine Vallejos's NPI (1912160557) is active in the NPPES registry as of the last update on 2016-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.