Sidney Block, MD
NPI 1841290376 · Rheumatology Physician · Bangor, ME
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sidney Block, MD is a Rheumatology Physician provider in Bangor, ME (NPI 1841290376).
Provider details
- NPI number
- 1841290376
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 008060 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 32 | 21 |
| Hydroxychloroquine Sulfate | 26 | 22 |
| Prednisone | 23 | 15 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-27
- Last updated
- 2008-05-16
Frequently asked questions
- What is Sidney Block's NPI number?
- Sidney Block's National Provider Identifier (NPI) is 1841290376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sidney Block's specialty?
- Sidney Block is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sidney Block located?
- Sidney Block's practice location on file with NPPES is 275 Union St, Bangor, ME 04401-4606.
- What is Sidney Block's phone number?
- The practice phone number listed in the NPPES registry for Sidney Block is (207) 945-9442.
- Does Sidney Block accept Medicare?
- Sidney Block is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sidney Block's NPI active?
- Yes — Sidney Block's NPI (1841290376) is active in the NPPES registry as of the last update on 2008-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.