Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Greg D Denenberg , MD

Internal Medicine • Glenview, IL

Active NPI 1235185299 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

2501 Compass Rd Ste 100
Glenview, IL 600268000

Call 8479015200 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

2501 Compass Rd Ste 100

Glenview, IL 600268000

Telephone 8479015200
Fax 8479015225
Organization at the Same NPPES Address or Phone
Covenant Medical Group, Llc Facility NPI 1912186024

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

Other Listings in Public Data

CMS Doctors and Clinicians lists 2 distinct group names: Covenant Medical Group, Llc; Select Rehabilitation, Llc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1995

Medicare patients

751 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $308,510 in 2024

The total amount Medicare approved for these services in 2024. 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 – by Provider and Service, 2024.

Paid by Medicare

About $255,980 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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 – by Provider and Service, 2024.

30-day fills

25,387 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

$833,493 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 – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $3,028.22 across 153 records.

By nature of payment

  • Food and Beverage: $3,028.22 across 153 records.

Reporting-company totals (3 largest of 24)

  • Pfizer Inc.: $541.93 across 29 records.
  • Novo Nordisk Inc: $490.28 across 24 records.
  • AstraZeneca Pharmaceuticals LP: $340.31 across 18 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

31 years (graduated 1995)

CMS Doctors and Clinicians data list 1995 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

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. Denenberg 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. Denenberg 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 Glenview and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Glenview, IL (2024, 31 clinicians with data). Median for this group: 1,459. Middle half: 853 to 2,096.

More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: 699. Middle half: 285 to 1,340.

Medicare-allowed amount

A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Glenview, IL (2024, 31 clinicians with data). Median for this group: $120,264. Middle half: $72,033 to $190,709.

A higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $67,802. Middle half: $27,619 to $124,679.

Paid by Medicare

A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Glenview, IL (2024, 31 clinicians with data). Median for this group: $96,850. Middle half: $58,864 to $161,480.

A higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $52,838. Middle half: $21,117 to $98,214.

Medicare Part D prescriptions

More Part D prescriptions than 95% of clinicians listed under Internal Medicine in Glenview, IL (2024, 34 clinicians with data). Median for this group: 3,585. Middle half: 1,567 to 6,494.

More Part D prescriptions than 90% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.

Part D drug cost

A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Glenview, IL (2024, 34 clinicians with data). Median for this group: $195,520. Middle half: $82,567 to $360,396.

A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: $78,716. Middle half: $2,604 to $371,507.

57 active clinicians are listed under Internal Medicine with a practice address in Glenview, IL (7,245 in Illinois).

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

Telehealth indicator in Glenview

38.6% of these 57 clinicians have the CMS telehealth indicator.

54.4% of these 57 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · 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 · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 153 records totaling $3,028.22.

Manufacturer Payment Nature Product Type Amount ($)
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
AIRSUPRA General $35.84
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $35.39
Inspire Medical Systems, Inc.
Food and Beverage
In-kind items and services
INSPIRE General $34.17
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $33.32
Gilead Sciences, Inc.
Food and Beverage
In-kind items and services
— General $32.97
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $32.44
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $31.26
Corcept Therapeutics
Food and Beverage
In-kind items and services
Korlym General $31.12
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $30.99
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $30.84
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $29.29
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $29.16
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $29.15
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $29.12
ABBVIE INC.
Food and Beverage
In-kind items and services
QULIPTA General $29.09
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $29.01
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $28.64
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $28.39
Sumitomo Pharma America, Inc.
Food and Beverage
In-kind items and services
GEMTESA General $28.35
Sumitomo Pharma America, Inc.
Food and Beverage
In-kind items and services
GEMTESA General $28.35
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $28.28
ABBVIE INC.
Food and Beverage
In-kind items and services
UBRELVY General $28.25
ABBVIE INC.
Food and Beverage
In-kind items and services
VRAYLAR General $28.18
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $28.04
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $27.99

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
1,198 557 $211.70 $91.58
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
613 523 $43.69 $15.23
G0444 Annual depression screening, 5 to 15 minutes
485 485 $55.65 $19.75
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
476 476 $388.58 $137.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
276 186 $373.05 $135.02
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
149 114 $68.60 $24.05
G0008 Administration of influenza virus vaccine
92 92 $62.00 $33.70
90662 Influenza vaccine split virus, preservative free
89 89 $220.00 $81.38
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
88 88 $768.93 $290.10
G0009 Administration of pneumococcal vaccine
86 86 $73.40 $33.70
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous
84 84 $45.72 $17.67
G0102 Prostate cancer screening; digital rectal examination
63 63 $69.28 $24.12
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
53 45 $154.61 $56.27
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
38 35 $546.99 $191.04
69210 Removal of impacted ear wax
29 23 $148.09 $51.51
82274 Stool analysis for blood, by fecal hemoglobin determination by immunoassay
24 23 $46.51 $14.95
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
24 24 $495.96 $174.67
77080 Dxa bone density measurement of hip, pelvis, spine
21 20 $112.07 $40.74
76536 Ultrasound scan of head and neck soft tissue
16 15 $329.55 $114.05
83036 Hemoglobin a1c level
16 13 $25.44 $9.52
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
16 16 $576.51 $196.93
76700 Complete ultrasound scan of abdomen
15 15 $350.04 $121.15
93970 Ultrasound study of arm or leg veins with compression and maneuvers
15 15 $549.73 $194.73
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report
14 14 $43.59 $15.24
99496 Transitional care management services for problem of high complexity
12 12 $862.00 $293.12

(top 25 shown)

Source: CMS Part B by Provider and Service, 2024; 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 · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 782 64,207 $7,979.16 203
Losartan Potassium Losartan Potassium 579 44,668 $5,930.20 143
Amlodipine Besylate Amlodipine Besylate 540 40,906 $3,884.09 137
Levothyroxine Sodium Levothyroxine Sodium 539 42,771 $7,449.63 138
Simvastatin Simvastatin 498 40,594 $5,156.28 129
Rosuvastatin Calcium Rosuvastatin Calcium 386 27,481 $4,458.93 102
Omeprazole Omeprazole 326 22,565 $3,977.62 88
Lisinopril Lisinopril 269 21,424 $2,632.34 70
Metoprolol Succinate Metoprolol Succinate 245 19,722 $4,555.63 69
Hydrochlorothiazide Hydrochlorothiazide 224 18,900 $1,308.55 62
Tamsulosin Hcl Tamsulosin Hcl 217 16,244 $3,718.93 63
Eliquis Apixaban 203 10,234 $198,989.73 44
Pravastatin Sodium Pravastatin Sodium 194 14,890 $2,583.48 49
Ezetimibe Ezetimibe 178 12,228 $3,858.36 43
Metformin Hcl Metformin Hcl 168 11,872 $1,740.27 43
Gabapentin Gabapentin 162 11,039 $2,213.91 48
Trazodone Hcl Trazodone Hcl 160 8,230 $1,346.38 38
Escitalopram Oxalate Escitalopram Oxalate 155 10,484 $2,210.86 38
Zolpidem Tartrate Zolpidem Tartrate 152 6,395 $1,082.52 45
Synthroid Levothyroxine Sodium 146 12,060 $13,483.57 32
Alprazolam Alprazolam 139 5,399 $1,343.94 46
Pantoprazole Sodium Pantoprazole Sodium 139 9,273 $1,938.00 38
Furosemide Furosemide 130 8,299 $782.43 40
Celecoxib Celecoxib 120 5,416 $4,154.40 31
Metformin Hcl Er Metformin Hcl 119 9,740 $841.36 38

(top 25 shown)

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: 2026-07-14
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES IL 036-098295

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

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier Bcbs
016-37105 (IL)

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

I20050912000188

Enrollment State Jurisdiction

IL

PECOS Control ID

5193758100

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.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Covenant Medical Group, Llc

2501 Compass Rd, Glenview, IL 600268000

Phone: 8479015200

Select Rehabilitation, Llc

2600 Compass Rd, Glenview, IL 600268001

Clinicians Sharing This Practice Address or Phone

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

9 listed
NPI 1699410712

Doctor of Medicine (M.D.)

Dr. Michael Caughron , MD

Internal Medicine

NPI 1164534137

Doctor of Medicine (M.D.)

Dr. Christopher Ho , DO

Internal Medicine

NPI 1053765040

Doctor of Osteopathic Medicine (D.O.)

Dr. Kim Leung-Stone , MD

Internal Medicine - Geriatric Medicine

NPI 1649255159

Doctor of Medicine (M.D.)

NPI 1114108727

Doctor of Osteopathic Medicine (D.O.)

Dr. Martha Millar , MD

Internal Medicine

NPI 1063591808

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

8 Historical Events
📍
Updated Practice Location July 14, 2026

Registered at 2501 COMPASS RD STE 100, GLENVIEW, IL 600268000 (Tel: 8479015200)

📍
Updated Business Mailing Address July 14, 2026

Registered at 2501 COMPASS RD STE 100, GLENVIEW, IL 600268000 (Tel: 8479015200)

âś…
NPI Profile Active May 19, 2008

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) May 19, 2008

Registered at 4905 OLD ORCHARD CTR, LOWER LEVEL, SKOKIE, IL 600771425 (Tel: 8476796707)

📍
Business Mailing Address (Initial Record) May 19, 2008

Registered at 4905 OLD ORCHARD CTR, LOWER LEVEL, SKOKIE, IL 600771425 (Tel: 8476796707)

👤
Provider Name / Credentials (Initial Record) May 19, 2008

Recorded as GREG DENENBERG, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 19, 2008

Internal Medicine (license number reported to NPPES: IL 036-098295)

🟢
Initial NPI Registration & Enumeration May 25, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1235185299
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 25, 2006
Last Update: July 14, 2026
Sole Proprietor: Yes

Other Internal Medicine Providers in Glenview

All Internal Medicine Providers in Glenview

Mailing Address

2501 Compass Rd Ste 100

Glenview, IL 600268000

Phone: 8479015200

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.