Darin Harnisch, M.D.
NPI 1710910880 · Specialist · Niles, IL
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darin Harnisch, M.D. is a Specialist provider in Niles, IL (NPI 1710910880).
Provider details
- NPI number
- 1710910880
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-106895 (IL)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,284 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,221 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 647 | $116 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 174 | $129 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 155 | $170 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 60 | 15 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 27 | — |
| Cefadroxil | 24 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 19 | 17 |
| Ethambutol Hcl | 18 | — |
| Rifampin | 18 | — |
| Amikacin Liposomal/Neb.accessrbrand: Arikayce | 17 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-09
- Last updated
- 2021-12-20
- Certified
- 2021-12-20
Frequently asked questions
- What is Darin Harnisch's NPI number?
- Darin Harnisch's National Provider Identifier (NPI) is 1710910880, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darin Harnisch's specialty?
- Darin Harnisch is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Darin Harnisch located?
- Darin Harnisch's practice location on file with NPPES is 7900 N Milwaukee Ave, Niles, IL 60714-3159.
- What is Darin Harnisch's phone number?
- The practice phone number listed in the NPPES registry for Darin Harnisch is (847) 663-9400.
- Does Darin Harnisch accept Medicare?
- Darin Harnisch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darin Harnisch's NPI active?
- Yes — Darin Harnisch's NPI (1710910880) is active in the NPPES registry as of the last update on 2021-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.