Alliam Regan, MD
NPI 1407274574 · Internal Medicine Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alliam Regan, MD is a Internal Medicine Physician provider in Springfield, MA (NPI 1407274574).
Provider details
- NPI number
- 1407274574
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 273227 (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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
155 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 | 54 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $92 |
| 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 | 26 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $182 |
Typical Medicare-allowed amounts for these services range $16–$182 (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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 106 | 31 |
| Lisinopril | 86 | 26 |
| Omeprazole | 61 | 19 |
| Pantoprazole Sodium | 45 | — |
| Amlodipine Besylate | 39 | 19 |
| Levothyroxine Sodium | 38 | 16 |
| Fluticasone Propionate |
Practice location
Mailing address
Additional practice locations (1)
- 759 Chestnut StreetSpringfield, MA 01107-1619Phone: (413) 794-6297Fax: (413) 794-1767
Registry dates
- Enumerated
- 2014-04-04
- Last updated
- 2019-06-25
Frequently asked questions
- What is Alliam Regan's NPI number?
- Alliam Regan's National Provider Identifier (NPI) is 1407274574, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alliam Regan's specialty?
- Alliam Regan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alliam Regan located?
- Alliam Regan's practice location on file with NPPES is 3400 Main Street, Springfield, MA 01107-1113.
- What is Alliam Regan's phone number?
- The practice phone number listed in the NPPES registry for Alliam Regan is (413) 794-8777.
- Does Alliam Regan accept Medicare?
- Alliam Regan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alliam Regan's NPI active?
- Yes — Alliam Regan's NPI (1407274574) is active in the NPPES registry as of the last update on 2019-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.