Juan Ruiz, M.D
NPI 1588972343 · Nephrology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Juan Ruiz, M.D is a Nephrology Physician provider in Chicago, IL (NPI 1588972343).
Provider details
- NPI number
- 1588972343
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 036127114 (IL)
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
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
100 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 59 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 28 | $101 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 | $136 |
Typical Medicare-allowed amounts for these services range $82–$136 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Nifedipinebrand: Nifedipine Er | 20 |
| Enalapril Maleate | 17 |
| Amlodipine Besylate | 14 |
| Losartan Potassium | 14 |
| Carvedilol | 14 |
| Potassium Chloride | 14 |
| Bumetanide | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$615 across 26 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
Additional practice locations (2)
- 6827 Stanley AveBerwyn, IL 60402-3287Phone: (708) 749-4617Fax: (708) 492-4077
- 1901 W Harrison StChicago, IL 60612-3714Phone: (312) 864-6000
Registry dates
- Enumerated
- 2010-09-15
- Last updated
- 2022-06-01
- Certified
- 2022-06-01
Frequently asked questions
- What is Juan Ruiz's NPI number?
- Juan Ruiz's National Provider Identifier (NPI) is 1588972343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Juan Ruiz's specialty?
- Juan Ruiz is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Juan Ruiz located?
- Juan Ruiz's practice location on file with NPPES is 2222 W Division St Ste 260, Chicago, IL 60622-2990.
- What is Juan Ruiz's phone number?
- The practice phone number listed in the NPPES registry for Juan Ruiz is (773) 489-6605.
- Does Juan Ruiz accept Medicare?
- Juan Ruiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Juan Ruiz's NPI active?
- Yes — Juan Ruiz's NPI (1588972343) is active in the NPPES registry as of the last update on 2022-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.