John Zambrano, M.D., M.H.S
NPI 1730422593 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Zambrano, M.D., M.H.S is a Internal Medicine Physician provider in Boston, MA (NPI 1730422593).
Provider details
- NPI number
- 1730422593
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.H.S
- Sex
- Male
- Sole proprietor
- No
- License
- 266903 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
394 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $108 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 73 | $9 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 39 | $13 |
| Hemoglobin A1c Level83036 | 37 | $9 |
| Blood Creatinine Level82565 | 29 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $82 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 111 | 36 |
| Amlodipine Besylate | 95 | 32 |
| Rosuvastatin Calcium | 62 | 23 |
| Metformin Hclbrand: Metformin Hcl Er | 48 | 18 |
| Lisinopril | 48 | 15 |
| Simvastatin | 43 | 17 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-30
- Last updated
- 2020-11-17
- Certified
- 2020-11-17
Frequently asked questions
- What is John Zambrano's NPI number?
- John Zambrano's National Provider Identifier (NPI) is 1730422593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zambrano's specialty?
- John Zambrano is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Zambrano located?
- John Zambrano's practice location on file with NPPES is 147 Milk St, Boston, MA 02109-4806.
- What is John Zambrano's phone number?
- The practice phone number listed in the NPPES registry for John Zambrano is (617) 654-7200.
- Does John Zambrano accept Medicare?
- John Zambrano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Zambrano's NPI active?
- Yes — John Zambrano's NPI (1730422593) is active in the NPPES registry as of the last update on 2020-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.