Tisha Joerla Tan, M.D.
NPI 1881959872 · Nephrology Physician · Crystal Lake, IL
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tisha Joerla Tan, M.D. is a Nephrology Physician provider in Crystal Lake, IL (NPI 1881959872).
Provider details
- NPI number
- 1881959872
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036137011 (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
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
5,163 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 50 Minutes99233 | 1,894 | $113 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 823 | $109 |
| 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 | 651 | $16 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 586 | $59 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 423 | $166 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carvedilol | 342 | 94 |
| Allopurinol | 271 | 81 |
| Furosemide | 245 | 103 |
| Bumetanide | 238 | 88 |
| Losartan Potassium | 233 | 84 |
| Amlodipine Besylate | 219 | 73 |
| Lisinopril | 171 | 59 |
| Potassium Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,034 across 42 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 (1)
- 1670 Capital St Unit 900Elgin, IL 60124-7837Phone: (847) 285-1908
Registry dates
- Enumerated
- 2012-07-06
- Last updated
- 2022-09-15
- Certified
- 2022-09-15
Frequently asked questions
- What is Tisha Joerla Tan's NPI number?
- Tisha Joerla Tan's National Provider Identifier (NPI) is 1881959872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tisha Joerla Tan's specialty?
- Tisha Joerla Tan is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Tisha Joerla Tan located?
- Tisha Joerla Tan's practice location on file with NPPES is 442 N Il Route 31, Crystal Lake, IL 60012-3709.
- What is Tisha Joerla Tan's phone number?
- The practice phone number listed in the NPPES registry for Tisha Joerla Tan is (224) 238-3211.
- Does Tisha Joerla Tan accept Medicare?
- Tisha Joerla Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tisha Joerla Tan's NPI active?
- Yes — Tisha Joerla Tan's NPI (1881959872) is active in the NPPES registry as of the last update on 2022-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.