Maireni Cruz, MD
NPI 1821228727 · Internal Medicine Physician · Athol, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maireni Cruz, MD is a Internal Medicine Physician provider in Athol, MA (NPI 1821228727).
Provider details
- NPI number
- 1821228727
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 14218 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
4 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 140 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 617 | 172 |
| Gabapentin | 495 | 64 |
| Levothyroxine Sodium | 365 | 94 |
| Lisinopril | 365 | 100 |
| Omeprazole | 338 | 103 |
| Amlodipine Besylate | 323 | 96 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 81 Reservoir DrAthol, MA 01331-4901Phone: (978) 248-5135Fax: (978) 248-5130
- 600 Highland AveMadison, WI 53792Phone: (608) 262-5420
- 600 Highland AveMadison, WI 53792Phone: (608) 262-5420
Registry dates
- Enumerated
- 2009-07-27
- Last updated
- 2025-07-15
- Certified
- 2025-07-15
Frequently asked questions
- What is Maireni Cruz's NPI number?
- Maireni Cruz's National Provider Identifier (NPI) is 1821228727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maireni Cruz's specialty?
- Maireni Cruz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maireni Cruz located?
- Maireni Cruz's practice location on file with NPPES is 2033 Main St, Athol, MA 01331-3535.
- What is Maireni Cruz's phone number?
- The practice phone number listed in the NPPES registry for Maireni Cruz is (978) 249-1295.
- Does Maireni Cruz accept Medicare?
- Maireni Cruz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maireni Cruz's NPI active?
- Yes — Maireni Cruz's NPI (1821228727) is active in the NPPES registry as of the last update on 2025-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.