Doctor profile · Federal record
Dr. Alexi Zemsky, MD
Clinical Cardiac Electrophysiology Physician (CMS: Cardiac Electrophysiology) · Cardiovascular Disease Physician · Portland, OR
- NPI 1598944928
- Accepts Medicare
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
4400 Ne Halsey St Ste 102
Portland, OR 972131545
(503) 962-1000 - Additional location
-
1111 Ne 99Th Ave, Suite 201
Portland, OR 972209428
fax (503) 962-1005 - Mailing address
-
Po Box 3158
Portland, OR 972083158
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- June 20, 2023
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RC0001X — NUCC code
- State license (1)
- Oregon #MD126045
- Medicaid
- OR #500610656
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598944928. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,374
Distinct HCPCS
10
Medicare allowed
$87,933
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93296 |
Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 467 | 397 | $24 | |
93295 |
Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 280 | 225 | $37 | |
93294 |
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 188 | 177 | $30 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 87 | 84 | $132 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 57 | 53 | $15 | |
93284 |
Programming of multiple lead implantable defibrillator system | 54 | 33 | $72 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 48 | 48 | $223 | |
93280 |
Programming of dual lead pacemaker system | 46 | 34 | $56 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 36 | 35 | $7 | |
93283 |
Programming of dual lead implantable defibrillator system | 30 | 21 | $74 |
In context: peer comparison
Among 6 peers in Portland Clinical Cardiac Electrophysiology Physician, average services per provider: 139. This provider delivers 9.9× the peer median.Open Payments
Industry payments received
All-time total
$6,472
Transactions
34
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merit Medical Systems INC | 1 | $3,840.00 | |
| Boston Scientific Corporation | 12 | $1,555.34 | |
| Abbott Laboratories | 16 | $896.36 | |
| Impulse Dynamics (USA) INC. | 2 | $93.26 | |
| Biosense Webster, INC. | 2 | $66.77 | |
| Pfizer INC. | 1 | $20.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,590
Patients
534
Total drug cost
$690,984
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 372 | 119 | $486,105 |
| Flecainide Acetate | Generic | 219 | 69 | $13,021 |
| Metoprolol Succinate | Generic | 203 | 76 | $4,740 |
| Sotalol (Sotalol Hcl) | Brand | 195 | 75 | $5,575 |
| Xarelto (Rivaroxaban) | Brand | 111 | 38 | $148,341 |
| Dofetilide | Generic | 98 | 33 | $22,733 |
| Amiodarone Hcl | Generic | 86 | 40 | $1,855 |
| Metoprolol Tartrate | Generic | 73 | 29 | $573 |
| Warfarin Sodium | Generic | 57 | 19 | $1,313 |
| Diltiazem 24Hr ER (Cd) (Diltiazem Hcl) | Brand | 44 | 12 | $2,600 |
Hospital affiliations
Frequently asked questions
What is Dr. Alexi Zemsky's medical specialty?
Dr. Alexi Zemsky practices Clinical Cardiac Electrophysiology Physician in Portland, OR.
Where does Dr. Alexi Zemsky practice?
Dr. Alexi Zemsky practices at 4400 Ne Halsey St Ste 102, Portland, OR 972131545. Office phone: 5039621000.
What is Dr. Alexi Zemsky's NPI?
Dr. Alexi Zemsky's National Provider Identifier (NPI) is 1598944928, issued by NPPES.
Does Dr. Alexi Zemsky accept Medicare assignment?
Yes. Dr. Alexi Zemsky accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Alexi Zemsky commonly perform?
Top Medicare-reported procedures in 2023: Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (HCPCS 93296); Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (HCPCS 93295); Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (HCPCS 93294). Source: CMS Medicare Physician & Other Practitioners file.