Doctor profile · Federal record
Dr. Maria O'Brien, M.D.
Family Medicine Physician · Family Medicine Physician · Family Medicine Physician · Leonardtown, MD
- NPI 1366429011
- MIPS 79.1 / 100 · 2023
- 21 yrs on file
- Licensed in 3 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
41680 Miss Bessie Dr Ste 301
Leonardtown, MD 206502965
(301) 997-0055
fax (301) 997-0066
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- January 24, 2017
- Specialty taxonomy
- 207Q00000X — NUCC code
- State licenses (3)
- Maryland #D82534 · Alabama #25649 · California #C53909
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366429011. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
771
Distinct HCPCS
10
Medicare allowed
$92,142
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 438 | 334 | $115 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 140 | 140 | $130 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 37 | 37 | $281 | |
G0009 |
Administration of pneumococcal vaccine | 35 | 35 | $31 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 25 | 25 | $167 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 25 | 23 | $79 | |
81003 |
Automated urinalysis test | 23 | 21 | $2 | |
99496 |
Transitional care management services for problem of high complexity | 14 | 14 | $260 | |
G0402 |
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | 12 | 12 | $166 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 11 | 11 | $15 |
In context: peer comparison
Among 3 peers in Leonardtown Family Medicine Physician, average services per provider: 62. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,532
Patients
518
Total drug cost
$24,395
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 230 | 76 | $3,599 |
| Amlodipine Besylate | Generic | 162 | 56 | $1,498 |
| Levothyroxine Sodium | Generic | 145 | 46 | $2,588 |
| Hydrochlorothiazide | Generic | 121 | 44 | $535 |
| Losartan Potassium | Generic | 118 | 37 | $1,831 |
| Gabapentin | Generic | 98 | 33 | $1,874 |
| Lisinopril | Generic | 93 | 33 | $955 |
| Metoprolol Succinate | Generic | 91 | 31 | $1,683 |
| Omeprazole | Generic | 89 | 28 | $1,559 |
| Metformin Hcl | Generic | 86 | 30 | $835 |
Frequently asked questions
What is Dr. Maria O'Brien's medical specialty?
Dr. Maria O'Brien practices Family Medicine Physician in Leonardtown, MD.
Where does Dr. Maria O'Brien practice?
Dr. Maria O'Brien practices at 41680 Miss Bessie Dr Ste 301, Leonardtown, MD 206502965. Office phone: 3019970055.
What is Dr. Maria O'Brien's NPI?
Dr. Maria O'Brien's National Provider Identifier (NPI) is 1366429011, issued by NPPES.
What procedures does Dr. Maria O'Brien 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); Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (HCPCS 90677). Source: CMS Medicare Physician & Other Practitioners file.