Fred Halloran, MD
NPI 1568434942 · Internal Medicine Physician · Huntley, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fred Halloran, MD is a Internal Medicine Physician provider in Huntley, IL (NPI 1568434942).
Provider details
- NPI number
- 1568434942
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036081972 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
497 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 441 | $126 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 23 | $18 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 19 | $126 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 14 | $220 |
Typical Medicare-allowed amounts for these services range $18–$220 (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 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 111 | 35 |
| Levothyroxine Sodium | 100 | 28 |
| Metoprolol Tartrate | 93 | 29 |
| Enalapril Maleate | 86 | 26 |
| Amlodipine Besylate | 83 | 25 |
| Simvastatin | 81 | 24 |
| Lisinopril | 80 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$289 across 11 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
- 2006-02-01
- Last updated
- 2024-01-17
- Certified
- 2024-01-17
Frequently asked questions
- What is Fred Halloran's NPI number?
- Fred Halloran's National Provider Identifier (NPI) is 1568434942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fred Halloran's specialty?
- Fred Halloran is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Fred Halloran located?
- Fred Halloran's practice location on file with NPPES is 11904 Oak Creek Pkwy, Huntley, IL 60142-6728.
- What is Fred Halloran's phone number?
- The practice phone number listed in the NPPES registry for Fred Halloran is (847) 506-1478.
- Does Fred Halloran accept Medicare?
- Fred Halloran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fred Halloran's NPI active?
- Yes — Fred Halloran's NPI (1568434942) is active in the NPPES registry as of the last update on 2024-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.