Jason Block, MD
NPI 1801823620 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Block, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1801823620).
Provider details
- NPI number
- 1801823620
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 226439 (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
19 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
150 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 | 90 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 37 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 23 | $151 |
Typical Medicare-allowed amounts for these services range $17–$151 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 118 | 34 |
| Amlodipine Besylate | 82 | 23 |
| Omeprazole | 53 | 11 |
| Losartan Potassium | 43 | 11 |
| Gabapentin | 42 | 11 |
| Lisinopril | 37 | 11 |
| Oxycodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-27
- Last updated
- 2012-06-19
Frequently asked questions
- What is Jason Block's NPI number?
- Jason Block's National Provider Identifier (NPI) is 1801823620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Block's specialty?
- Jason Block is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Block located?
- Jason Block's practice location on file with NPPES is 75 Francis Street, Boston, MA 02115.
- What is Jason Block's phone number?
- The practice phone number listed in the NPPES registry for Jason Block is (617) 732-6049.
- Does Jason Block accept Medicare?
- Jason Block is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Block's NPI active?
- Yes — Jason Block's NPI (1801823620) is active in the NPPES registry as of the last update on 2012-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.