DR. GREGORY WILLIAM ROLOFF MD
NPI 1841795929
Internal Medicine - Hematology & Oncology in Chicago, IL
NPI Status: Active since March 29, 2018
Contact Information
5841 S MARYLAND AVE # MC2115
CHICAGO, IL
ZIP 60637
Phone: (773) 702-2731
- Individual
- Male
- Internal Medicine
- Hematology & Oncology
- Accepts Insurance
- PECOS Enrolled
About GREGORY ROLOFF
This page provides the complete NPI Profile along with additional information for Gregory Roloff, an internist established in Chicago, Illinois with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1841795929 assigned on March 2018. The practitioner's primary taxonomy code is 207RH0003X with license number 036.155650 (IL). The provider is registered as an individual and his NPI record was last updated 4 years ago.
- NPI
- 1841795929
- Provider Name
- DR. GREGORY WILLIAM ROLOFF MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637
- Location Phone
- (773) 702-2731
- Mailing Address
- 180 HARVESTER DR STE 110 BURR RIDGE, IL 60527
- Mailing Phone
- (773) 702-1150
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-29-2018
- Last Update Date
- 06-25-2021
- Code Navigator
An internist like Gregory Roloff 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 Hematology & Oncology
- Taxonomy Code
- 207RH0003X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036.155650
- License State
- IL
- Taxonomy Description
- An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 390200000X | Student, Health Care | Student in an Organized Health Care Education/Training Program | (IL) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Gold S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care + Rx Copay - PPO
- Silver S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - PPO
- Connect Bronze 2000 Indiv Med Deductible - HMO
- Connect Bronze 5000 Indiv Med Deductible - Rx Copay - HMO
- Connect Bronze CMS Standard - HMO
- Connect Gold CMS Standard - Rx Copay - HMO
- Connect Silver 3000 Indiv Med Deductible - Rx Copay - HMO
- Connect Silver CMS Standard - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Gregory Roloff 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
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
Physician Visit Costs
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 60637 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99205
- Average New Patient Price $183.39
- Minimum New Patient Price $60.08
- Maximum New Patient Price $183.39
- Average New Patient Copayment $45.84
- 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.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 8 | 4 | 1 | 7 | 9 | 5 | 9 | 2 | 9 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 8 | 8 | 1 | 14 | 9 | 10 | 9 | 4 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 8 + 8 + 1 + 1 + 4 + 9 + 1 + 0 + 9 + 4 + 24 = 71 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 80 - 71 = 9 | 9 | ||||||||
The NPI number 1841795929 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1326211160 | DR. CARA ANN ROSENBAUM MD Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-0167 |
| 1306009279 | SOONMO PETER KANG MD Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 ROOM AB 107 CHICAGO, IL 60637 (773) 702-9699 |
| 1588093959 | SARAH NIELSEN MS Individual | Genetic Counselor, MS | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-4749 |
| 1922426352 | BRIAN HEISS M.D., M.A. Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2614 |
| 1366960759 | MS. NINA PAGADUAN AGPCNP-BC, RN Individual | Nurse Practitioner (Acute Care) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 386-3841 |
| 1922327535 | DR. APRIL T SWOBODA MD Individual | Internal Medicine (Medical Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 834-2689 |
| 1720354137 | DR. CHRISTINE MARIE BESTVINA M.D. Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-4627 |
| 1013273614 | DR. ABIOLA FALILAT IBRAHEEM M.B.CHB Individual | Internal Medicine (Medical Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-1000 |
| 1689212169 | MRS. JAMIE ELIZABETH MATHEWS APN Individual | Nurse Practitioner | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (630) 915-0871 |
| 1285161075 | KENISHA QUIANA GRANDISON NP Individual | Nurse Practitioner (Family) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 834-0475 |
| 1194245514 | KOOSHA PAYDARY MD Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1053999599 | MARINA CHIARA GARASSINO MD Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2984 |
| 1558893370 | DR. AUSTIN JAMES WESEVICH M.D. Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1982100012 | DR. KUNAL BANKIM DESAI MD MBA MS Individual | Student in an Organized Health Care Education/Training Program | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1003579541 | GILDA GRACE RIVERA Individual | Nurse Practitioner | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-6149 |
| 1750799730 | AFAF OSMAN Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-0878 |
| 1497216758 | GIDEON TOLULOPE DOSUNMU M.D., MPH Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1245734391 | RAFAEL MADERO MARROQUIN MD Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1538620190 | DR. ALEXANDRA EWA ROJEK MD Individual | Internal Medicine | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-2731 |
| 1003234329 | DR. DANIEL OLSON M.D. Individual | Internal Medicine (Hematology & Oncology) | 5841 S MARYLAND AVE # MC2115 CHICAGO, IL 60637 (773) 702-0878 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1841795929, enumerated in the NPI registry as an "individual" on March 29, 2018
The provider is located at 5841 S Maryland Ave # Mc2115 Chicago, Il 60637 and the phone number is (773) 702-2731
The provider's speciality is Internal Medicine with taxonomy code 207RH0003X with a focus in Hematology & Oncology
The provider might be accepting Accepts: Aetna CVS Health and Cigna Healthcare. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.
Medicare beneficiaries should expect a typical cost of $183.39 with an average copayment of $45.84 for new patient appointments. Established patients should expect a typical charge of $105.7 and an average copayment of 26.42. Please review your insurance plan or contact the provider directly to determine your specific costs.
This NPI record was last updated on March 29, 2018. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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