Gregory Flis, AGPCNP-BC
NPI 1922484161 · Adult Health Nurse Practitioner · New Haven, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Flis, AGPCNP-BC is a Adult Health Nurse Practitioner provider in New Haven, CT (NPI 1922484161).
Provider details
- NPI number
- 1922484161
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- AGPCNP-BC
- Sex
- Male
- Sole proprietor
- No
- License
- 6221 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $162 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $118 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 38 | $146 |
Typical Medicare-allowed amounts for these services range $118–$162 (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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 43 | 21 |
| Gabapentin | 38 | 22 |
| Baclofen | 20 | — |
| Tizanidine Hcl | 16 | — |
| Diclofenac Sodium | 13 | — |
| Diclofenac Potassium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 5 Munson RdFarmington, CT 06032-2094Phone: (860) 679-6551Fax: (860) 679-0131
Registry dates
- Enumerated
- 2015-08-10
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is Gregory Flis's NPI number?
- Gregory Flis's National Provider Identifier (NPI) is 1922484161, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Flis's specialty?
- Gregory Flis is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregory Flis located?
- Gregory Flis's practice location on file with NPPES is 1 Long Wharf Dr, New Haven, CT 06511-5991.
- What is Gregory Flis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Flis is (203) 688-8800.
- Does Gregory Flis accept Medicare?
- Gregory Flis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Flis's NPI active?
- Yes — Gregory Flis's NPI (1922484161) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.