Lynne Hillis, M.D.
NPI 1558367359 · Internal Medicine Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynne Hillis, M.D. is a Internal Medicine Physician provider in New Haven, CT (NPI 1558367359).
Provider details
- NPI number
- 1558367359
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 031055 (CT)
Specialties & taxonomies
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
805 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 181 | $139 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 91 | $59 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 91 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $99 |
| Physician Or Allowed Practitioner Re-Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians aG0179 | 61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 123 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 436 | 109 |
| Atorvastatin Calcium | 428 | 105 |
| Levothyroxine Sodium | 373 | 79 |
| Escitalopram Oxalate | 264 | 52 |
| Rosuvastatin Calcium | 246 | 59 |
| Losartan Potassium | 220 | 57 |
| Trazodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-27
- Last updated
- 2021-05-27
- Certified
- 2021-05-27
Frequently asked questions
- What is Lynne Hillis's NPI number?
- Lynne Hillis's National Provider Identifier (NPI) is 1558367359, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynne Hillis's specialty?
- Lynne Hillis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lynne Hillis located?
- Lynne Hillis's practice location on file with NPPES is 1453 Whalley Ave, New Haven, CT 06515-1153.
- What is Lynne Hillis's phone number?
- The practice phone number listed in the NPPES registry for Lynne Hillis is (203) 389-4111.
- Does Lynne Hillis accept Medicare?
- Lynne Hillis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynne Hillis's NPI active?
- Yes — Lynne Hillis's NPI (1558367359) is active in the NPPES registry as of the last update on 2021-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.