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DR. DAVID ROBERT BUYER M.D.
NPI 1831164888
Internal Medicine in Chicago, IL

Active since February 22, 2006Opted out of Medicare · through May 23, 2028
850 S WABASH AVE STE 210, CHICAGO, IL 60605(312) 598-3520(312) 598-3525 Get Directions Write a Review

NPPES record last updated: March 18, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 18, 2025, Dec 4, 2023, Aug 27, 2019 (3 updates tracked since 2019).

About Dr. David Robert Buyer M.d. NPPES

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

DR. DAVID ROBERT BUYER M.D. (NPI 1831164888) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (036092425) and active in the NPI registry since February 2006. He has opted out of Medicare through May 23, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1831164888
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DAVID ROBERT BUYERCredential: M.D.
Location Address850 S WABASH AVE STE 210Chicago, IL 60605-3642
Mailing Address850 S Wabash Ave Ste 210Chicago, IL 60605-3642 · (312) 942-5100 · Fax (312) 942-5109
Phone(312) 598-3520
Fax(312) 598-3525
Sole ProprietorYes
Enumeration DateFebruary 22, 2006
Last NPPES UpdateMarch 18, 20253 updates tracked since enumeration
NPPES CertifiedMarch 18, 2025
✔ NPI 1831164888 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036092425
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 Identifiers 1

Medicaid036092425IL

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 ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. David Robert Buyer M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from May 23, 2024 through May 23, 2028.

Opt-Out Effective DateMay 23, 2024
Opt-Out In Effect ThroughMay 23, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
53 services40 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
45 services37 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
44 services44 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
31 services27 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
13 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60605 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
8 suppliers16 claims74 services$6.26 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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
DAVID R. BUYER, MD, SC
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 Buyer's NPI number?

The NPI number for David Buyer is 1831164888. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Where is David Buyer located?

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

What is David Buyer's specialty?

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

Is David Buyer enrolled in Medicare?

No. David Buyer has opted out of Medicare through May 23, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does David Buyer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list David Buyer 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 Buyer was last updated on March 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.