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Diagnostic Radiology

Annie P. Lai, MD

Works at hospitals in Oakland, CA · Berkeley, CA · Castro Valley, CA … · California

Summary

Dr. Annie P. Lai, MD is a radiologist at 101 B Gale Wilson Blvd, Suite 100, Fairfield, CA 94533. Phone: (707) 646-4646. Accepts Medicare assignment. In 2024, Annie P. Lai had 2,610 Original Medicare patients and 13,702 services. NPI 1548202740. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Annie P. Lai, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Annie P. Lai accept Medicare assignment?
Yes. Medicare's clinician data says Annie P. Lai 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 Annie P. Lai see?
In 2024, CMS data shows 2,610 Original Medicare patients and 13,702 services for Annie P. Lai. This counts Original Medicare only and measures volume, not quality.
What is Annie P. Lai's NPI number?
1548202740. 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 Annie P. Lai, 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 patients2,610
Services billed to Medicare13,702
Different services or procedures134
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Injection, gadobutrol, 0.1 ml (A9585)9,097 services
  2. X-ray of chest, 1 view (71045)483 services
  3. Mri scan of brain without contrast (70551)281 services
  4. Mri scan of lower spinal canal without contrast (72148)278 services
  5. Mri scan of brain before and after contrast (70553)198 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 blood pressure75%
  • High cholesterol75%
  • Arthritis47%
  • Diabetes34%
  • Chronic kidney disease33%
  • Ischemic heart disease27%

Hospitals where Annie P. Lai works

Medicare's Facility Affiliation Data lists Annie P. Lai 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.

Practice locations

Addresses where Annie P. Lai is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Annie P. Lai as a member of these groups (CMS data updated October 2, 2026).

  • University Healthcare Alliance327 clinicians in the group
  • Bay Imaging Consultants Medical Group Inc146 clinicians in the group
  • John Muir Magnetic Imaging Center57 clinicians in the group
  • Magnetic Imaging Affiliates LLC45 clinicians in the group
  • Solano Diagnostics Partners a Calif Limited Partnership45 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in California →

Other radiologists in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.

All radiologists in Fairfield →

Other clinicians in University Healthcare Alliance

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1548202740
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians