Karen Stemler, APRN
NPI 1134164650 · Family Nurse Practitioner · Branford, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Stemler, APRN is a Family Nurse Practitioner provider in Branford, CT (NPI 1134164650).
Provider details
- NPI number
- 1134164650
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 002602 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
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
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
296 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 | 86 | $114 |
| 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 | 73 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 59 | $156 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 23 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $79 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 298 | 84 |
| Atorvastatin Calcium | 169 | 39 |
| Levothyroxine Sodium | 169 | 43 |
| Amlodipine Besylate | 167 | 47 |
| Losartan Potassium | 116 | 26 |
| Escitalopram Oxalate | 98 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-18
- Last updated
- 2023-12-15
- Certified
- 2023-12-15
Frequently asked questions
- What is Karen Stemler's NPI number?
- Karen Stemler's National Provider Identifier (NPI) is 1134164650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Stemler's specialty?
- Karen Stemler is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Stemler located?
- Karen Stemler's practice location on file with NPPES is 960 Main St, Branford, CT 06405-3730.
- What is Karen Stemler's phone number?
- The practice phone number listed in the NPPES registry for Karen Stemler is (203) 488-6358.
- Does Karen Stemler accept Medicare?
- Karen Stemler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Stemler's NPI active?
- Yes — Karen Stemler's NPI (1134164650) is active in the NPPES registry as of the last update on 2023-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.