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QUINTESSENTIAL CARE
NPI 1962784124
Internal Medicine in Chicago, IL

Active since September 14, 2011CLIA Certified · 2 labs
850 S WABASH AVE STE 210, CHICAGO, IL 60605(312) 598-3520(312) 598-3525 Get Directions Write a Review

NPPES record last updated: December 4, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Quintessential Care NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

QUINTESSENTIAL CARE (NPI 1962784124) is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since September 2011. The organization holds 2 active CLIA laboratory certificates and lists David R. Buyer, Physician Owner, as its authorized official.

NPPES Registry Identity

NPI1962784124
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDAVID R. BUYER, MD, SC
Location Address850 S WABASH AVE STE 210Chicago, IL 60605-3642
Mailing Address322 Greenleaf AveWilmette, IL 60091-1910 · (312) 942-5100 · Fax (312) 942-5109
Phone(312) 598-3520
Fax(312) 598-3525
Organization SubpartNo
Authorized OfficialDavid R. BuyerPhysician Owner · (312) 598-3520
Enumeration DateSeptember 14, 2011
Last NPPES UpdateDecember 4, 2023
NPPES CertifiedDecember 4, 2023
✔ NPI 1962784124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
850 S WABASH AVE STE 210, Chicago, IL 60605
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Other Names 1

Doing Business AsQuintessential Care

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

CLIA Laboratory Certificates CMS CLIA 2

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D2167868

Quintessential Care David R Buyer M D S C · Chicago, IL
Active · expires Jun 16, 2027
CLIA Number14D2167868
Laboratory TypePhysician Office
Certificate Effective DateJune 17, 2025
Certificate Expiration DateJune 16, 2027
Laboratory DirectorDavid R. Buyer M D
Laboratory Phone(312) 598-3520
Laboratory LocationQuintessential Care David R Buyer M D S C850 S Wabash - Ste 210, Chicago, IL 60605
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 14D2283414

Quintessential Care · Skokie, IL
Active · expires Jun 6, 2027
CLIA Number14D2283414
Laboratory TypeIndependent
Certificate Effective DateJune 7, 2025
Certificate Expiration DateJune 6, 2027
Laboratory DirectorDavid Buyer
Laboratory Phone(312) 598-3520
Laboratory LocationQuintessential Care4905 Old Orchard Rd - Ste 634, Skokie, IL 60077
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JAMES ALLEN YOUNG MD
Physical Medicine & Rehabilitation
850 S WABASH AVE STE 210
CHICAGO, IL 60605
Cook County (312) 589-3527
DR. DAVID ROBERT BUYER M.D.
Internal Medicine
850 S WABASH AVE STE 210
CHICAGO, IL 60605
Cook County (312) 598-3520

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is David R. Buyer, MD, Sc's NPI number?

The NPI number for David R. Buyer, MD, Sc is 1962784124. It was assigned to this organization in the NPPES registry on September 14, 2011. The provider is doing business as Quintessential Care.

Where is David R. Buyer, MD, Sc located?

David R. Buyer, MD, Sc is located at 850 S Wabash Ave Ste 210, Chicago, IL 60605. The listed phone number is (312) 598-3520.

What is David R. Buyer, MD, Sc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does David R. Buyer, MD, Sc hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does David R. Buyer, MD, Sc accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list David R. Buyer, MD, Sc as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for David R. Buyer, MD, Sc was last updated on December 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.