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Internal Medicine

Jennifer J. Tan, MD

Works at hospitals in Richland, WA · Washington

Summary

Dr. Jennifer J. Tan, MD is an internal medicine doctor at 888 Swift Blvd, Richland, WA 99352. Phone: (509) 946-4611. Accepts Medicare assignment. In 2024, Jennifer J. Tan had 348 Original Medicare patients and 815 services. NPI 1912285172. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 888 Swift Blvd, Richland, WA 99352 · Directions
  • Phone: (509) 946‑4611
  • Medicare: Accepts Medicare assignment
  • Hospital: Kadlec Regional Medical Center
  • Group practice: Kadlec Regional Medical Center
  • Medical school: graduated 2000 (26 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer J. Tan, 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 Jennifer J. Tan accept Medicare assignment?
Yes. Medicare's clinician data says Jennifer J. Tan 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 Jennifer J. Tan see?
In 2024, CMS data shows 348 Original Medicare patients and 815 services for Jennifer J. Tan. This counts Original Medicare only and measures volume, not quality.
What is Jennifer J. Tan's NPI number?
1912285172. 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 Jennifer J. Tan, 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 patients348
Services billed to Medicare815
Different services or procedures8
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)449 services
  2. Hospital discharge day management, 30 minutes or less (99238)125 services
  3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)123 services
  4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)70 services
  5. Hospital discharge day management, more than 30 minutes (99239)15 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%
  • Arthritis62%
  • Chronic kidney disease50%
  • Diabetes48%
  • Ischemic heart disease45%

Hospitals where Jennifer J. Tan works

Medicare's Facility Affiliation Data lists Jennifer J. Tan 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 Jennifer J. Tan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jennifer J. Tan as a member of this group (CMS data updated October 2, 2026).

  • Kadlec Regional Medical Center414 clinicians in the group

Specialties

Find other Internal Medicine doctors in Washington →

Other internal medicine doctors in Richland

Clinicians with the same Medicare primary specialty in Richland, WA — not a recommendation.

All internal medicine doctors in Richland →

Other clinicians in Kadlec Regional Medical Center

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

Clinician information

CredentialMD
Graduation year2000 (26 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1912285172
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