Jason Macklis, M.D.
Jason Macklis, M.D. is a Hematology & Oncology Physician in Park Ridge, IL, registered under NPI 1003136458.
Getting there
Here is what surrounds this office in Park Ridge, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 530 ft away. There is EV charging 377 ft from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.27 mi away, served by Dempster & Western.
Getting here and what is nearby
Parking 245 ft ~1 min
Parking 306 ft ~2 min
EV charging ChargePoint 377 ft ~2 min
Parking 530 ft ~3 min
Transit Dempster & Luther 770 ft ~3 min
Transit Dempster & Luther 902 ft ~4 min
Transit Dempster & Western 0.27 mi ~6 min
Restaurant Portillo's 0.27 mi ~6 min
8832 West Dempster Street, Niles 60714
Restaurant Pho Town 0.34 mi ~7 min
Restaurant Brunch Cafe 0.35 mi ~7 min
Grocery Jewel-Osco 0.40 mi ~8 min
Grocery Tony's Fresh Market 0.51 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 036133462 | IL | Hematology & Oncology Physician primary |
This provider holds licence 036133462 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Hematology/oncology
- PAC ID
- 8729220355
- Enrollment ID
- I20170621002218
Medicare enrolment is recorded as approved under the provider type Practitioner - Hematology/oncology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Hematology & Oncology covers
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. NUCC Health Care Provider Taxonomy, code 207RH0003X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003136458 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 8, 2010 |
| Last updated | Sep 25, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
1700 LUTHER LN STE 2200 Park Ridge, IL 60068 (847) 268-8577 |
| Mailing address |
29373 NETWORK PL Chicago, IL 60673 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 3 | 6 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 3 | 3 | 4 | 1 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.