Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. David Roberts Buchanan , MD

Internal Medicine โ€ข Chicago, IL

Active NPI 1396772992 Individual Practitioner Male Practitioner
Practice location in NPPES

1715 E 95th St
Chicago, IL 606174708

Call 7737684437 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1715 E 95th St

Chicago, IL 606174708

Telephone 7737684437
Organization at the Same NPPES Address or Phone
Oak Street Health Physicians Group, Pc Facility NPI 1083051643

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Medicare patients

18 people with Original Medicare in 2022

Different Original Medicare patients in 2022; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2022.

Medicare-allowed amount

About $1,348 in 2022

The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2022.

Paid by Medicare

About $830 in 2022

The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2022.

30-day fills

452 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$1,209 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $23.11 in 2022

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2022.

Guide: How to read an Open Payments record

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Buchanan has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Buchanan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

Fewer Part D prescriptions than 60% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,238 clinicians with data). Median for this group: 500. Middle half: 78 to 2,381.

Fewer Part D prescriptions than 65% of clinicians listed under Internal Medicine in Illinois (2024, 3,709 clinicians with data). Median for this group: 1,078. Middle half: 101 to 4,775.

Part D drug cost

A lower Part D drug cost than 75% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,238 clinicians with data). Median for this group: $42,371. Middle half: $1,836 to $234,977.

A lower Part D drug cost than 75% of clinicians listed under Internal Medicine in Illinois (2024, 3,709 clinicians with data). Median for this group: $81,781. Middle half: $2,821 to $375,415.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Dr. Buchanan are from 2022.

2,824 active clinicians are listed under Internal Medicine with a practice address in Chicago, IL (7,197 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Chicago

13.5% of these 2,824 clinicians have the CMS telehealth indicator.

38.7% of these 2,824 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2022

Program year 2022 (payments made January 1 โ€“ December 31, 2022): fewer than 11 records totaling $23.11.

Manufacturer Payment Nature Product Type Amount ($)
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $23.11

Source: CMS Open Payments, program year 2022, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2022.

CMS Part B ยท Data Year 2022

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
22 14 $101.29 $61.28

Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 40 3,630 $242.76 22
Amlodipine Besylate-Benazepril Amlodipine Besylate/Benazepril 27 2,480 $301.79 11
Amlodipine Besylate Amlodipine Besylate 17 1,496 $16.54 โ€”
Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide 17 1,550 $101.27 โ€”
Metoprolol Succinate Metoprolol Succinate 16 1,440 $65.86 โ€”
Carbidopa-Levodopa Carbidopa/Levodopa 14 196 $206.23 โ€”
Tamsulosin Hcl Tamsulosin Hcl 13 1,170 $206.56 โ€”
Sildenafil Citrate Sildenafil Citrate 12 318 $30.39 โ€”
Metformin Hcl Er Metformin Hcl 11 1,000 $37.56 โ€”

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2024-11-01
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES IL 036-100657

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20060811000295

Enrollment State Jurisdiction

IL

PECOS Control ID

9830192830

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

25 listed
Emily Anderson , PMHNP

Nurse Practitioner - Psychiatric/Mental Health

NPI 1437403755

Psychiatric-Mental Health Nurse Practitioner

Sandra Anim , NP

Nurse Practitioner - Family

NPI 1821422320

Nurse Practitioner

Olayinka Durojaiye , FNP

Nurse Practitioner - Family

NPI 1811439300

Family Nurse Practitioner

Dr. Sharon Duval , MD

Internal Medicine

NPI 1366634487

Doctor of Medicine (M.D.)

Tarryn Ellis , NP

Nurse Practitioner - Family

NPI 1801387089

Nurse Practitioner

Miglena Garkova , FNP

Nurse Practitioner - Family

NPI 1447978887

Family Nurse Practitioner

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
๐Ÿ“
Updated Practice Location November 01, 2024

Registered at 1715 E 95TH ST, CHICAGO, IL 606174708 (Tel: 7737684437)

๐Ÿ“
Updated Business Mailing Address November 01, 2024

Registered at PO BOX 746721, ATLANTA, GA 303746721 (Tel: 7733521515)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 01, 2024

Internal Medicine (license number reported to NPPES: IL 036-100657)

โœ…
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) July 08, 2007

Registered at JOHN H. STROGER, JR. HOSPITAL OF COOK COUNTY, 1901 WEST HARRISON STREET, CHICAGO, IL 606123714 (Tel: 3128647338)

๐Ÿ“
Business Mailing Address (Initial Record) July 08, 2007

Registered at 1430 W LELAND AVE, CHICAGO, IL 606404628 (Tel: 7738784364)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) July 08, 2007

Recorded as DAVID BUCHANAN, M.D.

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine

๐ŸŸข
Initial NPI Registration & Enumeration June 27, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1396772992
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 27, 2006
Last Update: November 01, 2024
Sole Proprietor: No

Other Internal Medicine Providers in Chicago

All Internal Medicine Providers in Chicago

Mailing Address

Po Box 746721

Atlanta, GA 303746721

Phone: 7733521515

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.