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Family Practice

Rinku Shrivastava, MD

Works at hospitals in Castro Valley, CA · Pleasanton, CA · California

Summary

Dr. Rinku Shrivastava, MD is a family doctor at 19845 Lake Chabot Rd, Suite 205, Castro Valley, CA 94546. Phone: (510) 582-6424. Accepts Medicare assignment. In 2024, Rinku Shrivastava had 210 Original Medicare patients and 2,956 services. NPI 1225369119. 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.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 19845 Lake Chabot Rd, Suite 205, Castro Valley, CA 94546 · Directions
  • Phone: (510) 582‑6424
  • Medicare: Accepts Medicare assignment
  • Hospitals: Eden Medical Center, Stanford Health Care Tri-Valley
  • Group practice: Chabot Family Associates Inc
  • Medical school: graduated 2001 (25 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Rinku Shrivastava, 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 Rinku Shrivastava accept Medicare assignment?
Yes. Medicare's clinician data says Rinku Shrivastava 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 Rinku Shrivastava see?
In 2024, CMS data shows 210 Original Medicare patients and 2,956 services for Rinku Shrivastava. This counts Original Medicare only and measures volume, not quality.
What is Rinku Shrivastava's NPI number?
1225369119. 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 Rinku Shrivastava, 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 patients210
Services billed to Medicare2,956
Different services or procedures51
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)671 services
  2. Injection, methylprednisolone acetate, 1 mg (J1010)388 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)165 services
  4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)154 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)130 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%
  • Arthritis40%
  • Diabetes28%
  • Chronic kidney disease27%
  • Ischemic heart disease25%

Hospitals where Rinku Shrivastava works

Medicare's Facility Affiliation Data lists Rinku Shrivastava 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.

  • Eden Medical CenterCastro Valley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050488
  • Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050283

Practice locations

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

Group practices

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

  • Chabot Family Associates Inc2 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in Castro Valley

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

All family doctors in Castro Valley →

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1225369119
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