Loren Greenberg, MS, MD
NPI 1730241357 · Geriatric Medicine (Internal Medicine) Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Loren Greenberg, MS, MD is a Geriatric Medicine (Internal Medicine) Physician provider in New Haven, CT (NPI 1730241357).
Provider details
- NPI number
- 1730241357
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MS, MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 211288 (NY)
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
19 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
582 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 100 | $116 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 75 | $80 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 67 | $195 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 60 | $127 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 53 | $185 |
| Nursing Facility Discharge Management, More Than 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 73 | 42 |
| Donepezil Hcl | 54 | 26 |
| Trazodone Hcl | 50 | 23 |
| Gabapentin | 41 | 22 |
| Levothyroxine Sodium | 41 | 15 |
| Amlodipine Besylate | 41 | 19 |
| Oxycodone Hcl | 40 |
Practice location
Mailing address
Additional practice locations (1)
- 2800 Main StBridgeport, CT 06606-4201Phone: (203) 576-6000
Registry dates
- Enumerated
- 2006-12-14
- Last updated
- 2024-01-16
- Certified
- 2024-01-16
Frequently asked questions
- What is Loren Greenberg's NPI number?
- Loren Greenberg's National Provider Identifier (NPI) is 1730241357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Loren Greenberg's specialty?
- Loren Greenberg is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Loren Greenberg located?
- Loren Greenberg's practice location on file with NPPES is 1450 Chapel St, New Haven, CT 06511-4405.
- What is Loren Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Loren Greenberg is (203) 688-2204.
- Does Loren Greenberg accept Medicare?
- Loren Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Loren Greenberg's NPI active?
- Yes — Loren Greenberg's NPI (1730241357) is active in the NPPES registry as of the last update on 2024-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.