Doctor profile · Federal record
Dr. Michael Johnstone, M.D.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Nuclear Cardiology Physician · Internal Medicine Physician · Brighton, MA
- NPI 1235164336
- Accepts Medicare
- 44 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
736 Cambridge St, 4Th Fl, Cardiovascular Medicine Suite, 4Th Fl Margaret's
Brighton, MA 021352907
(617) 562-7690
fax (617) 562-7699 - Additional location
-
77 Warren St, 2Nd Floor
Brighton, MA 02135
(617) 562-5525
fax (617) 562-5546 - Mailing address
-
960 Massachusetts Ave, Fl 2
Boston, MA 02118
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- March 18, 2026
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Massachusetts #60598
- Medicaid
- MA #110048563A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235164336. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,942
Distinct HCPCS
10
Medicare allowed
$112,587
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 485 | 305 | $9 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 409 | 394 | $73 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 225 | 122 | $104 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 110 | 51 | $84 | |
93971 |
Ultrasound study of one arm or leg veins with compression and maneuvers | 75 | 72 | $21 | |
93325 |
Ultrasound of heart with color-depicted blood flow, rate and valve function | 55 | 54 | $3 | |
93016 |
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician | 54 | 53 | $22 | |
93018 |
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | 54 | 53 | $15 | |
99291 |
Critical care, first 30-74 minutes | 52 | 19 | $225 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 49 | 18 | $126 |
In context: peer comparison
Among 4 peers in Brighton Cardiovascular Disease Physician, average services per provider: 76. This provider delivers 26× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,376
Patients
348
Total drug cost
$351,962
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 269 | 71 | $6,418 |
| Metoprolol Succinate | Generic | 219 | 60 | $7,115 |
| Eliquis (Apixaban) | Brand | 153 | 34 | $184,270 |
| Lisinopril | Generic | 153 | 47 | $1,880 |
| Nifedipine ER (Nifedipine) | Brand | 120 | 31 | $6,031 |
| Entresto (Sacubitril/Valsartan) | Brand | 93 | 19 | $110,105 |
| Furosemide | Generic | 58 | 17 | $428 |
| Isosorbide Mononitrate ER (Isosorbide Mononitrate) | Brand | 52 | 15 | $1,774 |
| Losartan Potassium | Generic | 52 | 12 | $774 |
| Spironolactone | Generic | 44 | 12 | $469 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Johnstone's medical specialty?
Dr. Michael Johnstone practices Cardiovascular Disease Physician in Brighton, MA.
Where does Dr. Michael Johnstone practice?
Dr. Michael Johnstone practices at 736 Cambridge St, 4Th Fl, Brighton, MA 021352907. Office phone: 6175627690.
What is Dr. Michael Johnstone's NPI?
Dr. Michael Johnstone's National Provider Identifier (NPI) is 1235164336, issued by NPPES.
Does Dr. Michael Johnstone accept Medicare assignment?
Yes. Dr. Michael Johnstone accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Johnstone commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.