Physician Profile
Mark E. Mass, MD
Unclaimed ProfileAbout Dr. Mass
Mark E. Mass, MD practices urgent care clinic in Lake Forest, IL. Mark is a 1988 graduate of University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb). Mark is also listed as specializing in emergency medical services, occupational medicine, and emergency medicine. Medicare claims data shows Mark provided 1,735 services to 1,353 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (847) 234-7950
- Email not available
Practice Locations
1025 W EVERETT RD SUITE 101
Lake Forest, IL 60045
Procedures Most Often Billed to Medicare
1,735 services · 1,353 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
43 | Too few peers to compare |
| Removal of sutures or staples | Procedure | 15853 |
22 | Too few peers to compare |
| Removal of impacted ear wax by washing | Procedure | 69209 |
16 | Too few peers to compare |
| X-ray of chest, 2 views | Imaging | 71046 |
108 | Too few peers to compare |
| X-ray of wrist, minimum of 3 views | Imaging | 73110 |
15 | Too few peers to compare |
| X-ray of foot, minimum of 3 views | Imaging | 73630 |
14 | Too few peers to compare |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
14 | Too few peers to compare |
| X-ray of hand, minimum of 3 views | Imaging | 73130 |
13 | Too few peers to compare |
| X-ray of hip, 2-3 views | Imaging | 73502 |
11 | Too few peers to compare |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
59 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Class of 1988 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Mass's specialty?
Dr. Mass is an urgent care clinic in Lake Forest, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Mass?
Dr. Mass is listed at 1025 W Everett Rd Suite 101, Lake Forest, IL 60045. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Mass?
The number on file is (847) 234-7950. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Mass?
Dr. Mass's National Provider Identifier is 1841276847. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Mass's medical education?
Dr. Mass attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mass have?
Dr. Mass has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mass known for?
According to Medicare billing data, Dr. Mass performs procedures including insertion of needle into vein for collection of blood sample, removal of sutures or staples and removal of impacted ear wax by washing; reads or performs imaging such as x-ray of chest, 2 views and x-ray of wrist, minimum of 3 views; provides treatments such as injection of drug or substance under skin or into muscle and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mass's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mass. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.