Quick answers
- Does Allison Shigezawa accept Medicare assignment?
- Yes. Medicare's clinician data says Allison Shigezawa 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 Allison Shigezawa see?
- In 2024, CMS data shows 196 Original Medicare patients and 409 services for Allison Shigezawa. This counts Original Medicare only and measures volume, not quality.
- What is Allison Shigezawa's NPI number?
- 1245385541. 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 Allison Shigezawa, 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 | 196 |
|---|---|
| Services billed to Medicare | 409 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)145 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)108 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)33 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)16 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 cholesterol75%
- High blood pressure65%
- Osteoporosis39%
- Arthritis33%
- Diabetes32%
- Chronic kidney disease22%
Hospitals where Allison Shigezawa works
Medicare's Facility Affiliation Data lists Allison Shigezawa 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.
- Kapiolani Medical Center for Women & ChildrenHonolulu, HI · Children's Hospital · Emergency services: listed by Medicare · CCN 123300
- Pali Momi Medical CenterAiea, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120026
- Straub Clinic and HospitalHonolulu, HI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 120022
- The Queens Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120001
Practice locations
Addresses where Allison Shigezawa is enrolled with Medicare (CMS data updated October 2, 2026).
- 1301 Punchbowl StHonolulu, HI 96813
- 1329 Lusitana St, Suite 402Honolulu, HI 96813 (808) 686‑4790
- 1380 Lusitana StHonolulu, HI 96813
- 91 -2135 Fort Weaver Rd, Suite 150Ewa Beach, HI 96706 (808) 691‑3020
Group practices
Medicare enrollment lists Allison Shigezawa as a member of this group (CMS data updated October 2, 2026).
- Queens University Medical Group614 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Other clinicians in Queens University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1245385541 |
| 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