Doctor profile · Federal record
Dr. Timothy Jessen, MD
Allergy & Immunology Physician (CMS: Allergy/Immunology) · Internal Medicine Physician · Freeport, IL
- NPI 1831165034
- Accepts Medicare
- MIPS 81.7 / 100 · 2023
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1010 Fairway Dr
Freeport, IL 610326600
(815) 599-6930
fax (815) 599-7613 - Mailing address
-
421 W Exchange St, Po Box 268
Freeport, IL 610324030
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- October 23, 2017
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 207K00000X — NUCC code
- State license (1)
- Illinois #036077588
- Medicaid
- IL #036077588
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831165034. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,087
Distinct HCPCS
10
Medicare allowed
$29,610
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
95004 |
Test for allergy using allergenic extract | 520 | 12 | $4 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 127 | 74 | $124 | |
94729 |
Test to examine how well the lungs exchange gases | 83 | 82 | $9 | |
96372 |
Injection of drug or substance under skin or into muscle | 79 | 15 | $14 | |
94727 |
Test to determine lung volumes using gas dilution or washout | 74 | 73 | $11 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 59 | 47 | $86 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 53 | 53 | $10 | |
94010 |
Test to measure expiratory airflow and volume | 34 | 33 | $8 | |
36415 |
Insertion of needle into vein for collection of blood sample | 22 | 20 | $8 | |
71046 |
X-ray of chest, 2 views | 13 | 11 | $32 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 90. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$477
Transactions
28
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GENZYME CORPORATION | 14 | $236.49 | |
| AstraZeneca Pharmaceuticals LP | 5 | $92.81 | |
| Regeneron Healthcare Solutions, Inc. | 5 | $83.51 | |
| GlaxoSmithKline, LLC. | 2 | $35.24 | |
| Amgen Inc. | 1 | $14.75 | |
| Astellas Pharma US Inc | 1 | $14.42 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
712
Patients
201
Total drug cost
$144,711
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 114 | 58 | $241 |
| Montelukast Sodium | Generic | 107 | 30 | $1,879 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 76 | 35 | $2,357 |
| Azelastine Hcl | Generic | 52 | 13 | $1,044 |
| Fluticasone Propionate | Generic | 45 | 17 | $930 |
| Advair Hfa (Fluticasone Propion/Salmeterol) | Brand | 44 | 0 | $30,486 |
| Famotidine | Generic | 42 | 12 | $637 |
| Advair Diskus (Fluticasone Propion/Salmeterol) | Brand | 38 | 0 | $41,165 |
| Doxycycline Hyclate | Generic | 29 | 24 | $532 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 28 | 0 | $15,049 |
Hospital affiliations
Frequently asked questions
What is Dr. Timothy Jessen's medical specialty?
Dr. Timothy Jessen practices Allergy & Immunology Physician in Freeport, IL.
Where does Dr. Timothy Jessen practice?
Dr. Timothy Jessen practices at 1010 Fairway Dr, Freeport, IL 610326600. Office phone: 8155996930.
What is Dr. Timothy Jessen's NPI?
Dr. Timothy Jessen's National Provider Identifier (NPI) is 1831165034, issued by NPPES.
Does Dr. Timothy Jessen accept Medicare assignment?
Yes. Dr. Timothy Jessen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Jessen commonly perform?
Top Medicare-reported procedures in 2023: Test for allergy using allergenic extract (HCPCS 95004); Established patient office or other outpatient visit (HCPCS 99214); Test to examine how well the lungs exchange gases (HCPCS 94729). Source: CMS Medicare Physician & Other Practitioners file.