Griebs Darien Pharmacy Inc.
NPI 1003926502 · Community/Retail Pharmacy · Darien, CT
Enrolled with Medicare as Part B Supplier - Mass Immunization (roster Biller Only) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Griebs Darien Pharmacy Inc. is a Community/Retail Pharmacy organization in Darien, CT (NPI 1003926502).
Provider details
- NPI number
- 1003926502
- Entity type
- Organization
- Primary specialty
- Community/Retail PharmacySuppliers
- Organization subpart
- No
- Authorized official
- Debra Hibben, Owner(203) 655-1000
- License
- 118 (CT)
Specialties & taxonomies
Suppliers
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,397 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) |
|---|---|---|
| Admn Sarscov2 Vacc 1 Dose90480 | 701 | $45 |
| Administration of Influenza Virus VaccineG0008 | 670 | $31 |
| Administration of Pneumococcal VaccineG0009 | 26 | $34 |
Typical Medicare-allowed amounts for these services range $31–$45 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2025-10-17
- Certified
- 2025-10-17
Frequently asked questions
- What is Griebs Darien Pharmacy Inc.'s NPI number?
- Griebs Darien Pharmacy Inc.'s National Provider Identifier (NPI) is 1003926502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Griebs Darien Pharmacy Inc.?
- Griebs Darien Pharmacy Inc. is classified in the NPPES registry as Community/Retail Pharmacy (Suppliers).
- Where is Griebs Darien Pharmacy Inc. located?
- Griebs Darien Pharmacy Inc.'s practice location on file with NPPES is 1021 Post Rd, Darien, CT 06820-4510.
- What is Griebs Darien Pharmacy Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Griebs Darien Pharmacy Inc. is (203) 655-1000.
- Does Griebs Darien Pharmacy Inc. accept Medicare?
- Griebs Darien Pharmacy Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Griebs Darien Pharmacy Inc.?
- The authorized official listed on Griebs Darien Pharmacy Inc.'s NPPES record is Debra Hibben, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Griebs Darien Pharmacy Inc.'s NPI active?
- Yes — Griebs Darien Pharmacy Inc.'s NPI (1003926502) is active in the NPPES registry as of the last update on 2025-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.