Roger Karlin, MD
NPI 1700894177 · Internal Medicine Physician · New Fairfield, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roger Karlin, MD is a Internal Medicine Physician provider in New Fairfield, CT (NPI 1700894177).
Provider details
- NPI number
- 1700894177
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 19394 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,686 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 522 | $128 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 314 | $9 |
| Test to Measure Expiratory Airflow and Volume94010 | 271 | $28 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 154 | $180 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 151 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 129 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 430 | 96 |
| Levothyroxine Sodium | 351 | 74 |
| Rosuvastatin Calcium | 343 | 90 |
| Atorvastatin Calcium | 311 | 82 |
| Metoprolol Succinate | 206 | 44 |
| Ezetimibe | 174 | 42 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$733 across 33 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-03
- Last updated
- 2010-01-11
Frequently asked questions
- What is Roger Karlin's NPI number?
- Roger Karlin's National Provider Identifier (NPI) is 1700894177, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Karlin's specialty?
- Roger Karlin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Karlin located?
- Roger Karlin's practice location on file with NPPES is 88 Route 37, New Fairfield, CT 06812.
- What is Roger Karlin's phone number?
- The practice phone number listed in the NPPES registry for Roger Karlin is (203) 746-2436.
- Does Roger Karlin accept Medicare?
- Roger Karlin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roger Karlin's NPI active?
- Yes — Roger Karlin's NPI (1700894177) is active in the NPPES registry as of the last update on 2010-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.