Alejandro Esparza-Perez, M.D.
NPI 1124098595 · Internal Medicine Physician · Holyoke, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alejandro Esparza-Perez, M.D. is a Internal Medicine Physician provider in Holyoke, MA (NPI 1124098595).
Provider details
- NPI number
- 1124098595
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 211045 (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
20 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
117 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) |
|---|---|---|
| Blood Glucose (sugar) Level82947 | 65 | $4 |
| Hemoglobin A1c Level83036 | 52 | $10 |
Typical Medicare-allowed amounts for these services range $4–$10 (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 · 112 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 354 | 88 |
| Amlodipine Besylate | 295 | 64 |
| Lisinopril | 270 | 60 |
| Omeprazole | 215 | 58 |
| Gabapentin | 189 | 32 |
| Dulaglutidebrand: Trulicity | 157 | 25 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-26
- Last updated
- 2024-03-01
- Certified
- 2024-03-01
Frequently asked questions
- What is Alejandro Esparza-Perez's NPI number?
- Alejandro Esparza-Perez's National Provider Identifier (NPI) is 1124098595, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alejandro Esparza-Perez's specialty?
- Alejandro Esparza-Perez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alejandro Esparza-Perez located?
- Alejandro Esparza-Perez's practice location on file with NPPES is 230 Maple St Ste 1, Holyoke, MA 01040-5140.
- What is Alejandro Esparza-Perez's phone number?
- The practice phone number listed in the NPPES registry for Alejandro Esparza-Perez is (413) 420-2200.
- Does Alejandro Esparza-Perez accept Medicare?
- Alejandro Esparza-Perez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alejandro Esparza-Perez's NPI active?
- Yes — Alejandro Esparza-Perez's NPI (1124098595) is active in the NPPES registry as of the last update on 2024-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.