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Internal Medicine

Prentiss B. Taylor Jr., MD

Works at hospitals in Oak Lawn, IL · Chicago, IL · Illinois

Summary

Dr. Prentiss B. Taylor Jr., MD is an internal medicine doctor at 214 McHenry Rd, Buffalo Grove, IL 60089. Phone: (847) 459-1160. Accepts Medicare assignment. In 2024, Prentiss B. Taylor Jr. had 137 Original Medicare patients and 577 services. NPI 1801055983. 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 Prentiss B. Taylor Jr., 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 Prentiss B. Taylor Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Prentiss B. Taylor Jr. 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 Prentiss B. Taylor Jr. see?
In 2024, CMS data shows 137 Original Medicare patients and 577 services for Prentiss B. Taylor Jr.. This counts Original Medicare only and measures volume, not quality.
What is Prentiss B. Taylor Jr.'s NPI number?
1801055983. 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 Prentiss B. Taylor Jr., 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 patients137
Services billed to Medicare577
Different services or procedures32
Participating Medicare providerYes
Average age of these patients73

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)208 services
  2. Insertion of needle into vein for collection of blood sample (36415)94 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)48 services
  4. Blood glucose (sugar) measurement using reagent strip (82948)47 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)31 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 cholesterol67%
  • Arthritis43%
  • Diabetes36%
  • Chronic kidney disease36%
  • Heart failure24%

Hospitals where Prentiss B. Taylor Jr. works

Medicare's Facility Affiliation Data lists Prentiss B. Taylor Jr. 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 Prentiss B. Taylor Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Prentiss B. Taylor Jr. as a member of this group (CMS data updated October 2, 2026).

  • Advocate Health and Hospitals Corporation3,118 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Buffalo Grove

Clinicians with the same Medicare primary specialty in Buffalo Grove, IL — not a recommendation.

All internal medicine doctors in Buffalo Grove →

Other clinicians in Advocate Health and Hospitals Corporation

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

Clinician information

CredentialMD
Medical schoolHarvard Medical School
Graduation year1978 (48 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801055983
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