DR. STEPHEN MICHAEL GROHMANN M.D.
NPI 1033163191
Internal Medicine - Infectious Disease in Chicago, IL

NPI Status: Active since May 20, 2006

Contact Information

2740 W FOSTER AVE
SUITE 214
CHICAGO, IL
ZIP 60625
Phone: (773) 907-3400
Fax: (773) 506-2668

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  • Individual
  • Male
  • Years of Experience 40
  • Internal Medicine
  • Infectious Disease
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About STEPHEN GROHMANN

This page provides the complete NPI Profile along with additional information for Stephen Grohmann, an internist established in Chicago, Illinois with a medical specialization in Internal Medicine, focusing in infectious disease and more than 40 years of experience. He graduated from University Of Louisville School Of Medicine in 1986. The healthcare provider is registered in the NPI registry with number 1033163191 assigned on May 2006. The practitioner's primary taxonomy code is 207RI0200X. The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1033163191
Provider Name
DR. STEPHEN MICHAEL GROHMANN M.D.
Gender
Male
Entity Type
Individual
Location Address
2740 W FOSTER AVE SUITE 214 CHICAGO, IL 60625
Location Phone
(773) 907-3400
Location Fax
(773) 506-2668
Mailing Address
2740 W FOSTER AVE SUITE 214 CHICAGO, IL 60625
Mailing Phone
(773) 907-3400
Mailing Fax
(773) 506-2668
Medical School Name
UNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduation Year
1986
Is Sole Proprietor?
No
Enumeration Date
05-20-2006
Last Update Date
04-14-2008
Code Navigator

An internist like Stephen Grohmann 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 Infectious Disease

Taxonomy Code
207RI0200X
Type
Allopathic & Osteopathic Physicians
License State
IL
Taxonomy Description
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Complete Gold - EPO
  • Complete Gold + Vision + Adult Dental - EPO
  • Complete Silver - EPO
  • Complete Silver + Vision + Adult Dental - EPO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Elite Gold - HMO
  • Elite Gold + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Everyday Gold - HMO
  • Everyday Gold + Vision + Adult Dental - HMO
  • Clear Gold - EPO
  • Clear Gold + Vision + Adult Dental - EPO
  • Complete Gold - EPO
  • Complete Gold + Vision + Adult Dental - EPO
  • Elite Silver - EPO
  • Elite Silver + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Focused Silver - EPO
  • Focused Silver + Vision + Adult Dental - EPO

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.

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
741940MEDICARE ID-TYPE UNSPECIFIED (04)IL 
F22848MEDICARE UPIN (02)IL 
1617297OTHER (01)ILBLUE CROSS/BLUE SHIELD

Medicare Participation & PECOS Enrollment Status

Stephen Grohmann 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.

Stephen Grohmann 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: 244304764

    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: I20101109000845

    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.

Critical care, first 30-74 minutes

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

This service was performed 89 times for 30 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 19 times for 12 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 39 times for 32 patients

Extended inpatient or observation hospital service, first hour

This service involves staying in the hospital for a longer period for close monitoring or treatment. During the first hour, medical staff observe your health status, administer necessary treatments, and ensure your comfort and safety. It's part of ensuring optimal care.

This service was performed 43 times for 30 patients

Follow-up hospital inpatient care per day, typically 35 minutes

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

This service was performed 587 times for 183 patients

Initial hospital inpatient care per day, typically 50 minutes

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

This service was performed 21 times for 21 patients

Initial hospital inpatient care per day, typically 70 minutes

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

This service was performed 149 times for 137 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $34.71 for a new patient copayment and $26.42 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 60625 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 99214

  • Average Established Patient Price $105.7
  • Minimum Established Patient Price $18.97
  • Maximum Established Patient Price $148.12
  • Average Established Patient Copayment $26.42
  • 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.

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. Stephen Grohmann is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
NORTHSHORE UNIVERSITY HEALTHSYSTEM - EVANSTON HOSPITAL2650 RIDGE AVE
EVANSTON, IL 60201
(847) 432-8000Acute Care Hospitals
NORTHWESTERN LAKE FOREST HOSPITAL1000 N WESTMORELAND ROAD
LAKE FOREST, IL 60045
(847) 234-5600Acute Care Hospitals
NORTHWESTERN MEMORIAL HOSPITAL251 E HURON ST
CHICAGO, IL 60611
(312) 926-2000Acute 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 1033163191, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
3
Doubled → 6
Pos 4
3
Unchanged
Pos 5
1
Doubled → 2
Pos 6
6
Unchanged
Pos 7
3
Doubled → 6
Pos 8
1
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
1
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 3 → 6 1 → 2 3 → 6 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 6 + 3 + 2 + 6 + 6 + 1 + 1 + 8 + 24 = 59

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1033163191.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Surgery
2740 W FOSTER AVE
CHICAGO, IL 60625
Internal Medicine (Infectious Disease)
2740 W FOSTER AVE, SUITE 214
CHICAGO, IL 60625
Pharmacist
2740 W FOSTER AVE, SUITE 101
CHICAGO, IL 60625
Internal Medicine (Cardiovascular Disease)
2740 W FOSTER AVE, SUITE 312
CHICAGO, IL 60625
Internal Medicine (Cardiovascular Disease)
2740 W FOSTER AVE, SUITE #412
CHICAGO, IL 60625
Social Worker (Clinical)
2740 W FOSTER AVE, SUITE 417
CHICAGO, IL 60625
Internal Medicine (Nephrology)
2740 W FOSTER AVE, SUITE 210
CHICAGO, IL 60625
Family Medicine
2740 W FOSTER AVE, SUITE 214
CHICAGO, IL 60625
Family Medicine
2740 W FOSTER AVE, SUITE 214
CHICAGO, IL 60625
Internal Medicine
2740 W FOSTER AVE
CHICAGO, IL 60625
Internal Medicine (Cardiovascular Disease)
2740 W FOSTER AVE, SUITE 309
CHICAGO, IL 60625
Podiatrist (Foot & Ankle Surgery)
2740 W FOSTER AVE, SUITE #205
CHICAGO, IL 60625
Podiatrist (Foot & Ankle Surgery)
2740 W FOSTER AVE, SUITE #205
CHICAGO, IL 60625
Psychiatry & Neurology (Psychiatry)
2740 W FOSTER AVE, #401
CHICAGO, IL 60625
Family Medicine
2740 W FOSTER AVE, SUITE 410
CHICAGO, IL 60625
Internal Medicine (Infectious Disease)
2740 W FOSTER AVE, SUITE 214
CHICAGO, IL 60625
Family Medicine
2740 W FOSTER AVE, SUITE 209
CHICAGO, IL 60625
Internal Medicine
2740 W FOSTER AVE, SUITE 209
CHICAGO, IL 60625
Internal Medicine
2740 W FOSTER AVE, SUITE 101
CHICAGO, IL 60625
Internal Medicine (Pulmonary Disease)
2740 W FOSTER AVE, SUITE 415
CHICAGO, IL 60625

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033163191, enumerated as an "individual" on May 20, 2006.

The provider is located at 2740 W FOSTER AVE SUITE 214 CHICAGO, IL 60625 and the phone number is (773) 907-3400.

Internal Medicine with taxonomy code 207RI0200X and a focus in Infectious Disease.

The provider might be accepting Accepts: Ambetter from Home State Health, Ambetter Health,. Please consult your insurance carrier or call the provider to verify.

Stephen Grohmann is affiliated with: NORTHSHORE UNIVERSITY HEALTHSYSTEM - EVANSTON HOSPITAL, NORTHWESTERN LAKE FOREST HOSPITAL and NORTHWESTERN MEMORIAL HOSPITAL.