Doctor profile · Federal record
Dr. George Czajkowski, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Chicago, IL
- NPI 1821021007
- Accepts Medicare
- 44 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4025 N Western Ave
Chicago, IL 606183726
(773) 275-7700 - Mailing address
-
2311 W 22Nd St, Suite 202
Oak Brook, IL 605231225
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- December 26, 2021
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Illinois #036-069503
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821021007. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,008
Distinct HCPCS
10
Medicare allowed
$81,900
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 249 | 145 | $93 | |
36415 |
Insertion of needle into vein for collection of blood sample | 215 | 138 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 214 | 124 | $133 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 123 | 123 | $133 | |
G0008 |
Administration of influenza virus vaccine | 49 | 48 | $32 | |
90662 |
Influenza vaccine split virus, preservative free | 47 | 46 | $72 | |
83036 |
Hemoglobin a1c level | 46 | 38 | $9 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 18 | 18 | $282 | |
G0009 |
Administration of pneumococcal vaccine | 17 | 17 | $32 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 16 | 13 | $59 |
In context: peer comparison
Among 487 peers in Chicago Internal Medicine Physician, average services per provider: 168. This provider delivers 6.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
4,557
Patients
1,375
Total drug cost
$58,806
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 783 | 243 | $11,227 |
| Lisinopril | Generic | 518 | 160 | $4,796 |
| Amlodipine Besylate | Generic | 445 | 134 | $3,883 |
| Metformin Hcl | Generic | 360 | 110 | $3,244 |
| Levothyroxine Sodium | Generic | 342 | 88 | $5,447 |
| Metoprolol Succinate | Generic | 323 | 97 | $5,261 |
| Losartan Potassium | Generic | 270 | 86 | $3,759 |
| Hydrochlorothiazide | Generic | 260 | 79 | $1,254 |
| Tamsulosin Hcl | Generic | 251 | 76 | $4,863 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 186 | 34 | $3,762 |
Hospital affiliations
Frequently asked questions
What is Dr. George Czajkowski's medical specialty?
Dr. George Czajkowski practices Internal Medicine Physician in Chicago, IL.
Where does Dr. George Czajkowski practice?
Dr. George Czajkowski practices at 4025 N Western Ave, Chicago, IL 606183726. Office phone: 7732757700.
What is Dr. George Czajkowski's NPI?
Dr. George Czajkowski's National Provider Identifier (NPI) is 1821021007, issued by NPPES.
Does Dr. George Czajkowski accept Medicare assignment?
Yes. Dr. George Czajkowski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. George Czajkowski commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.