Doctor profile · Federal record
Dr. Mark Tatara, MD
Internal Medicine Physician (CMS: Internal Medicine) · Downers Grove, IL
- NPI 1043256324
- Accepts Medicare
- 40 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
6840 Main St Ste 200
Downers Grove, IL 60516
(630) 869-5382
fax (630) 869-5383 - Additional location
-
7900 W Jefferson Blvd, Suite 201
Fort Wayne, IN 468044128
(260) 432-2297
fax (260) 969-7266
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- December 23, 2021
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Illinois #036-077438
- Medicaid (2)
- OH #0795794 · IN #100355690
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043256324. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,688
Distinct HCPCS
10
Medicare allowed
$187,770
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 621 | 328 | $130 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 233 | 233 | $131 | |
36415 |
Insertion of needle into vein for collection of blood sample | 182 | 150 | $8 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 134 | 100 | $185 | |
G0008 |
Administration of influenza virus vaccine | 99 | 99 | $32 | |
90662 |
Influenza vaccine split virus, preservative free | 89 | 89 | $72 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 78 | 66 | $93 | |
83036 |
Hemoglobin a1c level | 45 | 43 | $10 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 42 | 42 | $167 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 30 | 24 | $53 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 117. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
3,468
Patients
995
Total drug cost
$45,156
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 626 | 186 | $9,412 |
| Amlodipine Besylate | Generic | 335 | 102 | $2,974 |
| Lisinopril | Generic | 287 | 84 | $2,241 |
| Hydrochlorothiazide | Generic | 274 | 73 | $1,794 |
| Metformin Hcl | Generic | 273 | 80 | $2,777 |
| Levothyroxine Sodium | Generic | 249 | 72 | $4,233 |
| Metoprolol Succinate | Generic | 235 | 70 | $3,883 |
| Tamsulosin Hcl | Generic | 202 | 54 | $4,363 |
| Losartan Potassium | Generic | 196 | 61 | $3,033 |
| Simvastatin | Generic | 180 | 48 | $2,122 |
Frequently asked questions
What is Dr. Mark Tatara's medical specialty?
Dr. Mark Tatara practices Internal Medicine Physician in Downers Grove, IL.
Where does Dr. Mark Tatara practice?
Dr. Mark Tatara practices at 6840 Main St Ste 200, Downers Grove, IL 60516. Office phone: 6308695382.
What is Dr. Mark Tatara's NPI?
Dr. Mark Tatara's National Provider Identifier (NPI) is 1043256324, issued by NPPES.
Does Dr. Mark Tatara accept Medicare assignment?
Yes. Dr. Mark Tatara accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Tatara commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.