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Anesthesiology

Qianfang Ren, MD

Sees patients in Pleasanton, CA · California

Summary

Dr. Qianfang Ren, MD is an anesthesiologist at 5555 W Las Positas Blvd, Pleasanton, CA 94588. Phone: (678) 690-7808. Accepts Medicare assignment. In 2024, Qianfang Ren had 257 Original Medicare patients and 292 services. NPI 1568429058. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 5555 W Las Positas Blvd, Pleasanton, CA 94588 · Directions
  • Phone: (678) 690‑7808
  • Medicare: Accepts Medicare assignment
  • Group practice: Premier Anesthesia of California PC
  • Medical school: graduated 1984 (42 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Qianfang Ren, 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 Qianfang Ren accept Medicare assignment?
Yes. Medicare's clinician data says Qianfang Ren 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 Qianfang Ren see?
In 2024, CMS data shows 257 Original Medicare patients and 292 services for Qianfang Ren. This counts Original Medicare only and measures volume, not quality.
What is Qianfang Ren's NPI number?
1568429058. 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 Qianfang Ren, 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 patients257
Services billed to Medicare292
Different services or procedures53
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Anesthesia for lens surgery (00142)64 services
  2. Anesthesia for other procedure on large bowel using an endoscope (00811)32 services
  3. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)29 services
  4. Anesthesia for procedure on small and large bowel using an endoscope (00813)21 services
  5. Insertion of artery tube for blood sampling or infusion through skin (36620)13 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 pressure70%
  • Arthritis47%
  • Chronic kidney disease32%
  • Diabetes24%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)23%

Practice locations

Addresses where Qianfang Ren is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Qianfang Ren as a member of this group (CMS data updated October 2, 2026).

  • Premier Anesthesia of California PC46 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in Pleasanton

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

All anesthesiologists in Pleasanton →

Other clinicians in Premier Anesthesia of California PC

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

Clinician information

CredentialMD
Graduation year1984 (42 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568429058
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians