Doctor profile · Federal record
Dr. Mary Ann Williamson, M.D.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Doylestown, PA
- NPI 1598931206
- Accepts Medicare
- 20 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
315 W State St
Doylestown, PA 189013525
(215) 345-1900
Credentials & registration
- NPI registered
- May 2008 — 18 yrs on file
- Profile last updated
- June 15, 2015
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Pennsylvania #MD448085
- Medicaid
- PA #1028437000001
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598931206. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,764
Distinct HCPCS
10
Medicare allowed
$201,192
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 614 | 480 | $133 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 499 | 455 | $15 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 239 | 236 | $69 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 233 | 193 | $8 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 116 | 85 | $122 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 109 | 88 | $81 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 106 | 106 | $71 | |
93296 |
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 102 | 76 | $24 | |
93294 |
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 64 | 48 | $31 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 64 | 58 | $186 |
In context: peer comparison
Among 8 peers in Doylestown Cardiovascular Disease Physician, average services per provider: 101. This provider delivers 27× the peer median.Open Payments
Industry payments received
All-time total
$496
Transactions
31
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 13 | $152.86 | |
| E.R. Squibb & Sons, L.L.C. | 6 | $112.94 | |
| Amgen INC. | 4 | $75.00 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 2 | $53.11 | |
| Kiniksa Pharmaceuticals International, Plc | 2 | $38.57 | |
| Janssen Pharmaceuticals, INC | 1 | $20.17 | |
| AltaThera Pharmaceuticals LLC | 1 | $16.17 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $14.24 | |
| Pfizer INC. | 1 | $13.36 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,940
Patients
1,137
Total drug cost
$759,192
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 745 | 206 | $16,816 |
| Rosuvastatin Calcium | Generic | 503 | 143 | $10,170 |
| Eliquis (Apixaban) | Brand | 476 | 122 | $588,910 |
| Atorvastatin Calcium | Generic | 471 | 139 | $7,986 |
| Losartan Potassium | Generic | 277 | 77 | $3,840 |
| Amlodipine Besylate | Generic | 245 | 73 | $2,036 |
| Lisinopril | Generic | 218 | 73 | $2,160 |
| Furosemide | Generic | 213 | 67 | $1,919 |
| Hydrochlorothiazide | Generic | 154 | 47 | $924 |
| Ezetimibe | Generic | 134 | 45 | $5,229 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Ann Williamson's medical specialty?
Dr. Mary Ann Williamson practices Cardiovascular Disease Physician in Doylestown, PA.
Where does Dr. Mary Ann Williamson practice?
Dr. Mary Ann Williamson practices at 315 W State St, Doylestown, PA 189013525. Office phone: 2153451900.
What is Dr. Mary Ann Williamson's NPI?
Dr. Mary Ann Williamson's National Provider Identifier (NPI) is 1598931206, issued by NPPES.
Does Dr. Mary Ann Williamson accept Medicare assignment?
Yes. Dr. Mary Ann Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Ann Williamson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306). Source: CMS Medicare Physician & Other Practitioners file.