Jennifer Velasco, D.O., PH.D.
NPI 1639564743 · Internal Medicine Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Velasco, D.O., PH.D. is a Internal Medicine Physician provider in Oak Lawn, IL (NPI 1639564743).
Provider details
- NPI number
- 1639564743
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O., PH.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
848 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 345 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 312 | $131 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 101 | $228 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $185 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $93 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 257 | 98 |
| Prednisone | 238 | 93 |
| Methotrexate Sodiumbrand: Methotrexate | 178 | 53 |
| Sulfasalazinebrand: Sulfasalazine Dr | 138 | 30 |
| Leflunomide | 75 | 22 |
| Adalimumabbrand: Humira(cf) Pen | 72 | 11 |
| Allopurinol | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (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
Additional practice locations (1)
- 1600 N Randall Rd Ste 225131Elgin, IL 60123-7803Phone: (630) 232-2391Fax: (630) 232-2472
Registry dates
- Enumerated
- 2015-04-06
- Last updated
- 2021-11-15
- Certified
- 2021-11-15
Frequently asked questions
- What is Jennifer Velasco's NPI number?
- Jennifer Velasco's National Provider Identifier (NPI) is 1639564743, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Velasco's specialty?
- Jennifer Velasco is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Velasco located?
- Jennifer Velasco's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453.
- What is Jennifer Velasco's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Velasco is (708) 684-5673.
- Does Jennifer Velasco accept Medicare?
- Jennifer Velasco is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Velasco's NPI active?
- Yes — Jennifer Velasco's NPI (1639564743) is active in the NPPES registry as of the last update on 2021-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.