Quick answers
- Does David J. Crandall accept Medicare assignment?
- Yes. Medicare's clinician data says David J. Crandall accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does David J. Crandall see?
- In 2024, CMS data shows 69 Original Medicare patients and 111 services for David J. Crandall. This counts Original Medicare only and measures volume, not quality.
- What is David J. Crandall's NPI number?
- 1033195383. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for David J. Crandall, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 69 |
|---|---|
| Services billed to Medicare | 111 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)55 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)35 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol70%
- High blood pressure49%
- Arthritis39%
- Osteoporosis29%
- Depression22%
- Anxiety22%
Hospitals where David J. Crandall works
Medicare's Facility Affiliation Data lists David J. Crandall at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Advocate Good Shepherd HospitalBarrington, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140291
- Advocate Sherman HospitalElgin, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140030
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
Practice locations
Addresses where David J. Crandall is enrolled with Medicare (CMS data updated October 2, 2026).
- 22285 N Pepper Rd, Ste111Lake Barrington, IL 60010
- 22285 N Pepper Rd, Suite 111Lake Barrington, IL 60010 (847) 382‑7330
Group practices
Medicare enrollment lists David J. Crandall as a member of this group (CMS data updated October 2, 2026).
- Lake Barrington Womens Health Center PC4 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Lake Barrington
Clinicians with the same Medicare primary specialty in Lake Barrington, IL — not a recommendation.
Other clinicians in Lake Barrington Womens Health Center PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033195383 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians