Michael Johnstone, M.D.
NPI 1235164336 · Cardiovascular Disease Physician · Brighton, MA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Johnstone, M.D. is a Cardiovascular Disease Physician provider in Brighton, MA (NPI 1235164336).
Provider details
- NPI number
- 1235164336
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 60598 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,681 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 447 | $71 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 359 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 227 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 72 | $82 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 53 | $22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 315 | 83 |
| Metoprolol Succinate | 252 | 68 |
| Apixabanbrand: Eliquis | 171 | 40 |
| Lisinopril | 160 | 49 |
| Nifedipinebrand: Nifedipine Er | 104 | 29 |
| Sacubitril/Valsartanbrand: Entresto | 96 | 19 |
| Furosemide |
Practice location
Mailing address
Additional practice locations (1)
- 77 Warren St2nd FloorBrighton, MA 02135Phone: (617) 562-5525Fax: (617) 562-5546
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is Michael Johnstone's NPI number?
- Michael Johnstone's National Provider Identifier (NPI) is 1235164336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Johnstone's specialty?
- Michael Johnstone is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Johnstone located?
- Michael Johnstone's practice location on file with NPPES is 736 Cambridge St, 4th Fl, Brighton, MA 02135-2907.
- What is Michael Johnstone's phone number?
- The practice phone number listed in the NPPES registry for Michael Johnstone is (617) 562-7690.
- Does Michael Johnstone accept Medicare?
- Michael Johnstone is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Johnstone's NPI active?
- Yes — Michael Johnstone's NPI (1235164336) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.