Doctor profile · Federal record
Dr. Mark Chang, M.D.
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Surgery Physician · Dyer, IN
- NPI 1871607507
- Accepts Medicare
- MIPS 38.6 / 100 · 2023
- 36 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1100 Joliet St, Ste 104
Dyer, IN 463111996
(219) 836-4955
fax (219) 865-2377
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- February 5, 2025
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State licenses (2)
- Illinois #036095817 · Indiana #200033540A
- Medicaid (2)
- IL #036095817 · IN #200868870A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1871607507. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,929
Distinct HCPCS
10
Medicare allowed
$256,551
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 608 | 282 | $47 | |
72100 |
X-ray of lower and sacral spine, 2-3 views | 329 | 173 | $37 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 159 | 139 | $83 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 118 | 49 | $34 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 107 | 107 | $67 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 65 | 65 | $103 | |
72040 |
X-ray of upper spine, 2-3 views | 64 | 37 | $37 | |
63047 |
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | 53 | 49 | $864 | |
99211 |
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 51 | 51 | $21 | |
63048 |
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | 39 | 29 | $193 |
In context: peer comparison
Among 1 peers in Dyer Orthopaedic Surgery Physician, average services per provider: 77. This provider delivers 25× the peer median.Open Payments
Industry payments received
All-time total
$32,717
Transactions
20
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medyssey USA, INC | 1 | $32,000.00 | |
| Abbott Laboratories | 16 | $633.15 | |
| Carlsmed, INC. | 1 | $42.73 | |
| Abbvie INC. | 1 | $26.78 | |
| Stryker Corporation | 1 | $14.14 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,327
Patients
620
Total drug cost
$47,017
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 915 | 216 | $18,823 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 346 | 79 | $15,583 |
| Gabapentin | Generic | 192 | 54 | $2,045 |
| Methylprednisolone | Generic | 177 | 105 | $1,544 |
| Tramadol Hcl | Generic | 172 | 66 | $1,147 |
| Cyclobenzaprine Hcl | Generic | 116 | 33 | $2,233 |
| Diazepam | Generic | 104 | 29 | $775 |
| Carisoprodol | Generic | 54 | 0 | $680 |
| Meloxicam | Generic | 44 | 15 | $164 |
| Tizanidine Hcl | Generic | 40 | 0 | $311 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Chang's medical specialty?
Dr. Mark Chang practices Orthopaedic Surgery Physician in Dyer, IN.
Where does Dr. Mark Chang practice?
Dr. Mark Chang practices at 1100 Joliet St, Dyer, IN 463111996. Office phone: 2198364955.
What is Dr. Mark Chang's NPI?
Dr. Mark Chang's National Provider Identifier (NPI) is 1871607507, issued by NPPES.
Does Dr. Mark Chang accept Medicare assignment?
Yes. Dr. Mark Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212); X-ray of lower and sacral spine, 2-3 views (HCPCS 72100); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.