Michael Karellas, M.D.
NPI 1376671396 · Urology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Karellas, M.D. is a Urology Physician provider in New Haven, CT (NPI 1376671396).
Provider details
- NPI number
- 1376671396
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 60 241182 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,969 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 | 777 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 614 | $17 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 203 | $137 |
| Diagnostic Exam of Bladder and Urethra Using an Endoscope52000 | 100 | $84 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 56 | $67 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 562 | 202 |
| Finasteride | 288 | 98 |
| Mirabegronbrand: Myrbetriq | 192 | 66 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 138 | 46 |
| Vibegronbrand: Gemtesa | 95 | 29 |
| Ciprofloxacin Hcl | 78 | 67 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 75 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-01
- Last updated
- 2023-06-12
- Certified
- 2023-06-12
Frequently asked questions
- What is Michael Karellas's NPI number?
- Michael Karellas's National Provider Identifier (NPI) is 1376671396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Karellas's specialty?
- Michael Karellas is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Karellas located?
- Michael Karellas's practice location on file with NPPES is 800 Howard Ave, New Haven, CT 06519-1369.
- What is Michael Karellas's phone number?
- The practice phone number listed in the NPPES registry for Michael Karellas is (203) 737-6959.
- Does Michael Karellas accept Medicare?
- Michael Karellas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Karellas's NPI active?
- Yes — Michael Karellas's NPI (1376671396) is active in the NPPES registry as of the last update on 2023-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.