Gregory Decandia, MD
NPI 1003890641 · Family Medicine Physician · Southbury, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Decandia, MD is a Family Medicine Physician provider in Southbury, CT (NPI 1003890641).
Provider details
- NPI number
- 1003890641
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 76773 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
143 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) |
|---|---|---|
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 83 | $187 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 35 | $185 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 14 | $111 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 11 | $137 |
Typical Medicare-allowed amounts for these services range $111–$187 (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 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 316 | 53 |
| Apixabanbrand: Eliquis | 186 | 22 |
| Amlodipine Besylate | 132 | 28 |
| Escitalopram Oxalate | 131 | 17 |
| Furosemide | 120 | 27 |
| Tamsulosin Hcl | 119 | 23 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2014-03-27
Frequently asked questions
- What is Gregory Decandia's NPI number?
- Gregory Decandia's National Provider Identifier (NPI) is 1003890641, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Decandia's specialty?
- Gregory Decandia is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Decandia located?
- Gregory Decandia's practice location on file with NPPES is 1461 South Britain Road, Southbury, CT 06488-0901.
- What is Gregory Decandia's phone number?
- The practice phone number listed in the NPPES registry for Gregory Decandia is (203) 586-2000.
- Does Gregory Decandia accept Medicare?
- Gregory Decandia is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Decandia's NPI active?
- Yes — Gregory Decandia's NPI (1003890641) is active in the NPPES registry as of the last update on 2014-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.