MICHAEL T JOHNSTONE (M.D.) – Cardiovascular Disease Physician, NPI 1235164336
Cardiovascular Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,398 CARDIOVASCULAR DISEASE (CARDIOLOGY) in MA
Provider Addresses for MICHAEL T JOHNSTONE (M.D.)
77 Warren St
2nd Floor
Brighton, MA 02135
Phone: (617) 562-5525
Fax: (617) 562-5546
Type: Location
960 MASSACHUSETTS AVE
FL 2
BOSTON, MA 02118
Phone:
Type: Mailing
736 CAMBRIDGE ST, 4TH FL
CARDIOVASCULAR MEDICINE SUITE, 4TH FL MARGARET'S
BRIGHTON, MA 021352907
Phone: (617) 562-7690
Fax: (617) 562-7699
Type: Location
St. Elizabeth's Medical Center, 736, Cambridge Street, Aberdeen, Brighton, Boston, Suffolk County, Massachusetts, 02135, United States
ST E'S MOB 3
BRIGHTON, MA 021352907
Phone: (617) 789-3047
Fax: (617) 789-5029
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2006-03-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060322000546 | I | Cardiovascular Disease (Cardiology) | MA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 517 | 329 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 409 | 394 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 254 | 143 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 110 | 51 | $0 |
| 93971 | Ultrasound study of one arm or leg veins with compression and maneuvers | 75 | 72 | $0 |
Insurance plans in this area (ZIP 02135)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | MA | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 73 | 40 |
| INTERNAL MEDICINE | MA | 93926 | Ultrasound study of arteries and arterial grafts of one leg or limited | 35 | 32 |
| INTERNAL MEDICINE | MA | 93971 | Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers | 51 | 50 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| N E U R O S U R G E R Y | FL | |
| - | PA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| Internal Medicine | MA | |
| - | PA | |
| General Surgery | PA | |
| - | PA | |
| - | MA | |
| - | MA |
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