David Gruen, MD
NPI 1215901327 · Diagnostic Radiology Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Gruen, MD is a Diagnostic Radiology Physician provider in Stamford, CT (NPI 1215901327).
Provider details
- NPI number
- 1215901327
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036693 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,308 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Screening Mammography77067 | 421 | $38 |
| Screening 3d Breast Mammography77063 | 418 | $30 |
| Screening Mammography77067 | 309 | $120 |
| Screening 3d Breast Mammography77063 | 304 | $51 |
| X-Ray of Chest, 2 Views71046 | 180 | $11 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 170 | $10 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,599 across 8 records (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
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2019-10-15
Frequently asked questions
- What is David Gruen's NPI number?
- David Gruen's National Provider Identifier (NPI) is 1215901327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Gruen's specialty?
- David Gruen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is David Gruen located?
- David Gruen's practice location on file with NPPES is 32 Strawberry Hill Ct, Stamford, CT 06902-2594.
- What is David Gruen's phone number?
- The practice phone number listed in the NPPES registry for David Gruen is (203) 276-4152.
- Does David Gruen accept Medicare?
- David Gruen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Gruen's NPI active?
- Yes — David Gruen's NPI (1215901327) is active in the NPPES registry as of the last update on 2019-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.