Doctor profile · Federal record
Dr. Mark Littlejohn, MD
Otolaryngology Physician (CMS: Otolaryngology) · Frisco, TX
- NPI 1932176252
- Accepts Medicare
- 38 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
8380 Warren Pkwy Ste 504
Frisco, TX 75034
(972) 596-4005
fax (972) 985-1253
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- November 28, 2018
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207Y00000X — NUCC code
- State license (1)
- Texas #H5784
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1932176252. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,017
Distinct HCPCS
10
Medicare allowed
$77,203
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 198 | 198 | $78 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 195 | 195 | $127 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 172 | 137 | $63 | |
31575 |
Diagnostic exam of voice box using a flexible endoscope | 122 | 102 | $65 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 95 | 78 | $34 | |
69210 |
Removal of impacted ear wax | 78 | 70 | $30 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 64 | 53 | $94 | |
31231 |
Diagnostic exam of nasal passages using an endoscope | 38 | 25 | $62 | |
95992 |
Repositioning exercises of head for treatment of dizziness, each day | 32 | 27 | $34 | |
69433 |
Incision of eardrum with insertion of eardrum tube under local or topical anesthesia | 12 | 12 | $138 |
In context: peer comparison
Among 9 peers in Frisco Otolaryngology Physician, average services per provider: 95. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,328
Patients
617
Total drug cost
$20,260
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 404 | 120 | $4,067 |
| Famotidine | Generic | 397 | 140 | $5,106 |
| Ipratropium Bromide | Generic | 140 | 57 | $4,130 |
| Clotrimazole-Betamethasone (Clotrimazole/Betamethasone Dip) | Brand | 105 | 103 | $1,403 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 48 | 40 | $635 |
| Cefdinir | Generic | 40 | 34 | $1,187 |
| Omeprazole | Generic | 36 | 16 | $650 |
| Levofloxacin | Generic | 33 | 25 | $245 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 27 | 26 | $96 |
| Ofloxacin | Generic | 27 | 25 | $1,378 |
Frequently asked questions
What is Dr. Mark Littlejohn's medical specialty?
Dr. Mark Littlejohn practices Otolaryngology Physician in Frisco, TX.
Where does Dr. Mark Littlejohn practice?
Dr. Mark Littlejohn practices at 8380 Warren Pkwy Ste 504, Frisco, TX 75034. Office phone: 9725964005.
What is Dr. Mark Littlejohn's NPI?
Dr. Mark Littlejohn's National Provider Identifier (NPI) is 1932176252, issued by NPPES.
Does Dr. Mark Littlejohn accept Medicare assignment?
Yes. Dr. Mark Littlejohn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Littlejohn commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.