DR. STUART A. GREENFIELD M.D.
NPI 1457319477
Internal Medicine - Cardiovascular Disease in Chicago, IL
NPI Status: Active since May 01, 2006
Contact Information
150 E HURON ST
STE 800
CHICAGO, IL
ZIP 60611
Phone: (312) 642-9858
Fax: (312) 642-9818
- Individual
- Male
- Years of Experience 38
- Internal Medicine
- Cardiovascular Disease
- Accepts Medicare Approved Payment
- PECOS Enrolled
- Medicare Quality Reporting
About STUART GREENFIELD
This page provides the complete NPI Profile along with additional information for Stuart Greenfield, an internist established in Chicago, Illinois with a medical specialization in Internal Medicine, focusing in cardiovascular disease and more than 38 years of experience. The healthcare provider is registered in the NPI registry with number 1457319477 assigned on May 2006. The practitioner's primary taxonomy code is 207RC0000X with license number 036086081 (IL). The provider is registered as an individual and his NPI record was last updated 10 years ago.
- NPI
- 1457319477
- Provider Name
- DR. STUART A. GREENFIELD M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 150 E HURON ST STE 800 CHICAGO, IL 60611
- Location Phone
- (312) 642-9858
- Location Fax
- (312) 642-9818
- Mailing Address
- 150 E HURON ST STE 800 CHICAGO, IL 60611
- Mailing Phone
- (312) 642-9858
- Mailing Fax
- (312) 642-9818
- Medical School Name
- OTHER
- Graduation Year
- 1988
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-01-2006
- Last Update Date
- 03-10-2016
- Code Navigator
An internist like Stuart Greenfield is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Internal Medicine Cardiovascular Disease
- Taxonomy Code
- 207RC0000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036086081
- License State
- IL
- Taxonomy Description
- An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 036086081 | MEDICAID (05) | IL | |
| K18365 | MEDICARE ID-TYPE UNSPECIFIED (04) | IL | |
| G02413 | MEDICARE UPIN (02) | IL |
Medicare Participation & PECOS Enrollment Status
Stuart Greenfield is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Stuart Greenfield is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 8729024708
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20050630000112
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Administration of influenza virus vaccine
Blood test, clotting time
Blood test, lipids (cholesterol and triglycerides)
Established patient office or other outpatient visit, 10-19 minutes
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Influenza vaccine, quadrivalent derived from cell cultures
Insertion of needle into vein for collection of blood sample
New patient office or other outpatient visit, 45-59 minutes
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
This service was performed 98 times for 97 patientsA clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.
This service was performed 76 times for 14 patientsA lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.
This service was performed 396 times for 300 patientsThis 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.
This service was performed 87 times for 39 patientsThis 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.
This service was performed 611 times for 361 patientsThis 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.
This service was performed 405 times for 376 patientsThe quadrivalent influenza vaccine, derived from cell cultures, is a flu shot that protects against four different flu viruses. It's made in labs using cell cultures instead of eggs, making it a good option for those with egg allergies. It's a crucial tool in preventing the flu.
This service was performed 98 times for 97 patientsThis procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
This service was performed 617 times for 405 patientsThis is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
This service was performed 41 times for 41 patientsAn electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
This service was performed 845 times for 550 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $34.71 for a new patient copayment and $18.7 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 60611 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $138.86
- Minimum New Patient Price $60.08
- Maximum New Patient Price $183.39
- Average New Patient Copayment $34.71
- Minimum New Patient Copayment $15.02
- Maximum New Patient Copayment $45.84
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $74.8
- Minimum Established Patient Price $18.97
- Maximum Established Patient Price $148.12
- Average Established Patient Copayment $18.7
- Minimum Established Patient Copayment $4.74
- Maximum Established Patient Copayment $37.03
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Quality Reporting
The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.
| Quality Measure | Performance | Number of Patients |
|---|---|---|
| Annual registration in the Prescription Drug Monitoring Program | Yes | N/A |
| Annual registration by eligible clinician or group in the prescription drug monitoring program of the state where they practice. Activities that simply involve registration are not sufficient. MIPS eligible clinicians and groups must participate for a minimum of 6 months. | ||
| Anticoagulant Management Improvements | Yes | N/A |
| Individual MIPS eligible clinicians and groups who prescribe oral Vitamin K antagonist therapy (warfarin) must attest that, for 60 percent of practice patients in the transition year and 75 percent of practice patients in Quality Payment Program Year 2 and future years, their ambulatory care patients receiving warfarin are being managed by one or more of the following improvement activities: • Patients are being managed by an anticoagulant management service, that involves systematic and coordinated care, incorporating comprehensive patient education, systematic prothrombin time (PT-INR) testing, tracking, follow-up, and patient communication of results and dosing decisions; • Patients are being managed according to validated electronic decision support and clinical management tools that involve systematic and coordinated care, incorporating comprehensive patient education, systematic PT-INR testing, tracking, follow-up, and patient communication of results and dosing decisions; • For rural or remote patients, patients are managed using remote monitoring or telehealth options that involve systematic and coordinated care, incorporating comprehensive patient education, systematic PT-INR testing, tracking, follow-up, and patient communication of results and dosing decisions; and/or • For patients who demonstrate motivation, competency, and adherence, patients are managed using either a patient self-testing (PST) or patient-self-management (PSM) program. | ||
| Atrial Fibrillation and Atrial Flutter: Chronic Anticoagulation Therapy | 94% | 209 |
| Percentage of patients aged 18 years and older with nonvalvular atrial fibrillation (AF) or atrial flutter who were prescribed warfarin OR another FDA- approved anticoagulant drug for the prevention of thromboembolism during the measurement period | ||
| Consultation of the Prescription Drug Monitoring Program | Yes | N/A |
| Clinicians would attest to reviewing the patients’ history of controlled substance prescription using state prescription drug monitoring program (PDMP) data prior to the issuance of a Controlled Substance Schedule II (CSII) opioid prescription lasting longer than 3 days. For the transition year, clinicians would attest to 60 percent review of applicable patient’s history. For the Quality Payment Program Year 2 and future years, clinicians would attest to 75 percent review of applicable patient’s history performance. | ||
| Coronary Artery Disease (CAD): Antiplatelet Therapy | 98% | 295 |
| Percentage of patients aged 18 years and older with a diagnosis of coronary artery disease (CAD) seen within a 12 month period who were prescribed aspirin or clopidogrel | ||
| Documentation of Current Medications in the Medical Record | 100% | 1121 |
| Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter. This list must include ALL known prescriptions, over-the-counters, herbals, and vitamin/mineral/dietary (nutritional) supplements AND must contain the medications' name, dosage, frequency and route of administration | ||
| e-Prescribing | 100% | 5165 |
| At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology. | ||
| Immunization Registry Reporting | Yes | N/A |
| The MIPS eligible clinician is in active engagement with a public health agency to submit immunization data. | ||
| Provide Patient Access | 60% | 588 |
| At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold certain information. | ||
| Secure Messaging | 4% | 588 |
| For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure message sent by the patient (or the patient-authorized representative) during the performance period. | ||
| Security Risk Analysis | Yes | N/A |
| Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process. | ||
| Statin Therapy for the Prevention and Treatment of Cardiovascular Disease | 92% | 543 |
| Percentage of the following patients - all considered at high risk of cardiovascular events - who were prescribed or were on statin therapy during the measurement period: - Adults aged >= 21 years who were previously diagnosed with or currently have an active diagnosis of clinical atherosclerotic cardiovascular disease (ASCVD); OR - Adults aged >=21 years who have ever had a fasting or direct low-density lipoprotein cholesterol (LDL-C) level >= 190 mg/dL; OR - Adults aged 40-75 years with a diagnosis of diabetes with a fasting or direct LDL-C level of 70-189 mg/dL | ||
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Stuart Greenfield is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| NORTHWESTERN LAKE FOREST HOSPITAL | 1000 N WESTMORELAND ROAD LAKE FOREST, IL 60045 | (847) 234-5600 | Acute Care Hospitals | |
| NORTHWESTERN MEDICINE CENTRAL DUPAGE HOSPITAL | 25 NORTH WINFIELD ROAD WINFIELD, IL 60190 | (630) 682-1600 | Acute Care Hospitals | |
| NORTHWESTERN MEMORIAL HOSPITAL | 251 E HURON ST CHICAGO, IL 60611 | (312) 926-2000 | Acute Care Hospitals |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1457319477, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
CHICAGO, IL 60611
CHICAGO, IL 60611
CHICAGO, IL 60611
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1457319477, enumerated as an "individual" on May 01, 2006.
The provider is located at 150 E HURON ST STE 800 CHICAGO, IL 60611 and the phone number is (312) 642-9858.
Internal Medicine with taxonomy code 207RC0000X and a focus in Cardiovascular Disease.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
Stuart Greenfield is affiliated with: NORTHWESTERN LAKE FOREST HOSPITAL, NORTHWESTERN MEDICINE CENTRAL DUPAGE HOSPITAL and NORTHWESTERN MEMORIAL HOSPITAL.