Mark Alan Ubbens , CRNP
Nurse Practitioner โข Chicago, IL
5841 S Maryland Ave
Chicago, IL 606371443
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on December 7, 2015; this date does not establish years in practice.
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Published CMS data list 24 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99238 โ Hospital discharge day management: 24 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 124 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl โ 57 prescription fills, including refills.
- Enoxaparin Sodium โ 28 prescription fills, including refills.
- Levetiracetam โ 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: 153. Middle half: 60 to 327.
Fewer Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 30 in 2020 to 24 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
5841 S Maryland Ave
Chicago, IL 606371443
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Geisinger Clinic; University Of Chicago. 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
2015
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
69 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $1,565 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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, 2024.
Paid by Medicare
About $1,142 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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, 2024.
30-day fills
124 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
$2,497 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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)
No Open Payments records are listed for this clinician for 2021โ2025.
Years since graduation
11 years (graduated 2015)
CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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
2015
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, โDoes your provider accept Medicare as full payment?โ
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.
Enrolled in Medicare (PECOS)
Mark Ubbens 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.
Can order Medicare-covered services
CMS lists Mark Ubbens 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: 153. Middle half: 60 to 327.
Fewer Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: $13,286. Middle half: $5,333 to $28,905.
A lower Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Chicago, IL (2024, 377 clinicians with data). Median for this group: $9,934. Middle half: $3,962 to $21,570.
A lower Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner in Chicago, IL (2024, 364 clinicians with data). Median for this group: 134. Middle half: 47 to 424.
Fewer Part D prescriptions than 65% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: 259. Middle half: 80 to 930.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Chicago, IL (2024, 364 clinicians with data). Median for this group: $7,605. Middle half: $492 to $57,977.
A lower Part D drug cost than 60% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: $10,867. Middle half: $976 to $113,945.
952 active clinicians are listed under Nurse Practitioner with a practice address in Chicago, IL (4,894 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
20% of these 952 clinicians have the CMS telehealth indicator.
56.2% of these 952 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 20% from 30 in 2020 to 24 in 2024.
- 2020: 30
- 2021: 37
- 2022: 141
- 2023: 41
- 2024: 24
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Medicare-allowed amount
Medicare-allowed amount went from $638 in 2020 to $1,565 in 2024.
- 2020: $638
- 2021: $1,650
- 2022: $8,908
- 2023: $2,670
- 2024: $1,565
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Paid by Medicare
Paid by Medicare went from $511 in 2020 to $1,142 in 2024.
- 2020: $511
- 2021: $1,320
- 2022: $7,062
- 2023: $2,127
- 2024: $1,142
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 328% from 29 in 2020 to 124 in 2024.
- 2020: 29
- 2021: 32
- 2022: 29
- 2023: 39
- 2024: 124
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30-day fills
30-day fills increased 328% from 29 in 2020 to 124 in 2024.
- 2020: 29
- 2021: 32
- 2022: 29
- 2023: 39
- 2024: 124
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Part D drug cost
Part D drug cost went from $91 in 2020 to $2,497 in 2024.
- 2020: $91
- 2021: $125
- 2022: $156
- 2023: $212
- 2024: $2,497
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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 |
|---|---|---|---|---|
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99238
Hospital discharge day management, 30 minutes or less
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24 | 24 | $195.58 | $65.20 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 57 | 201 | $189.90 | 57 |
| Enoxaparin Sodium | Enoxaparin Sodium | 28 | 341 | $2,207.86 | 27 |
| Levetiracetam | Levetiracetam | 22 | 121 | $55.75 | 22 |
| Carisoprodol | Carisoprodol | 17 | 114 | $43.46 | 17 |
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: 2024-10-15NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20241023002498
IL
3173826815
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
University Of Chicago
5841 S Maryland Ave, Chicago, IL 606371443
Phone: 8888240200
Geisinger Clinic
100 N Academy Ave, Danville, PA 178229800
Phone: 5702716541
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Obstetrics & Gynecology
Family Medicine
Radiology - Diagnostic Radiology
Internal Medicine - Cardiovascular Disease
Internal Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 5841 S MARYLAND AVE, CHICAGO, IL 606371443 (Tel: 8888240200)
Registered at 150 HARVESTER DR STE 300, BURR RIDGE, IL 605275965
Nurse Practitioner (license number reported to NPPES: IL 209030092)
NPI status registered as active in NPPES database
Registered at 100 N ACADEMY AVE, DANVILLE, PA 178222018 (Tel: 5702717149)
Registered at 100 N ACADEMY AVE, DANVILLE, PA 178224903 (Tel: 5702716144)
Recorded as MARK UBBENS, CRNP
Nurse Practitioner (license number reported to NPPES: PA SP015761)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Chicago
- Kimberly Barker- Price, APRN, AGPCNP
- Ada Brown-Walls, APN
- Julia Lee, APN, FNP-C
- Daniel Maher, NP
- Ariel Hugh
- Taquana Muhammad, NP-C
Mailing Address
150 Harvester Dr Ste 300
Burr Ridge, IL 605275965