Doctor profile · Federal record
Dr. Mark Udden, MD
Hematology (Internal Medicine) Physician · Houston, TX
- NPI 1235219577
- MIPS 77.8 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1504 Taub Loop
Houston, TX 770301608
(713) 873-8890 - Additional location
-
6620 Main St
Houston, TX 770302348
(713) 798-2500
fax (713) 798-2505 - Mailing address
-
6620 Main St
Houston, TX 770302348
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- March 1, 2026
- Specialty taxonomy
- 207RH0000X — NUCC code
- State license (1)
- Texas #E8986
- Medicaid
- TX #131355304
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235219577. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
265
Distinct HCPCS
5
Medicare allowed
$27,422
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 123 | 67 | $99 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 93 | 61 | $100 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 20 | 20 | $137 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 13 | $148 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 11 | $68 |
In context: peer comparison
Among 18 peers in Houston Hematology (Internal Medicine) Physician, average services per provider: 65. This provider delivers 4.1× the peer median.Open Payments
Industry payments received
All-time total
$85
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Alexion Pharmaceuticals, INC. | 1 | $85.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
192
Patients
23
Total drug cost
$1,119,494
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Imbruvica (Ibrutinib) | Brand | 31 | 0 | $470,849 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 30 | 0 | $944 |
| Hydroxyurea | Generic | 30 | 12 | $1,619 |
| Eliquis (Apixaban) | Brand | 27 | 11 | $19,092 |
| Jakafi (Ruxolitinib Phosphate) | Brand | 21 | 0 | $380,255 |
| Xarelto (Rivaroxaban) | Brand | 17 | 0 | $11,890 |
| Bosulif (Bosutinib) | Brand | 12 | 0 | $230,029 |
| Dexamethasone | Generic | 12 | 0 | $220 |
| Imatinib Mesylate | Generic | 12 | 0 | $4,596 |
Frequently asked questions
What is Dr. Mark Udden's medical specialty?
Dr. Mark Udden practices Hematology (Internal Medicine) Physician in Houston, TX.
Where does Dr. Mark Udden practice?
Dr. Mark Udden practices at 1504 Taub Loop, Houston, TX 770301608. Office phone: 7138738890.
What is Dr. Mark Udden's NPI?
Dr. Mark Udden's National Provider Identifier (NPI) is 1235219577, issued by NPPES.
What procedures does Dr. Mark Udden commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.