Karen Siller, MD
NPI 1164413779 · Internal Medicine Physician · Jamaica Plain, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Siller, MD is a Internal Medicine Physician provider in Jamaica Plain, MA (NPI 1164413779).
Provider details
- NPI number
- 1164413779
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 151709 (MA)
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
292 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 | 119 | $102 |
| 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 | 81 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $69 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $152 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 24 | $104 |
Typical Medicare-allowed amounts for these services range $17–$152 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 49 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 186 | 56 |
| Amlodipine Besylate | 134 | 40 |
| Lisinopril | 125 | 34 |
| Omeprazole | 122 | 37 |
| Hydrochlorothiazide | 120 | 34 |
| Losartan Potassium | 104 | 29 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-02
- Last updated
- 2012-07-05
Frequently asked questions
- What is Karen Siller's NPI number?
- Karen Siller's National Provider Identifier (NPI) is 1164413779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Siller's specialty?
- Karen Siller is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Siller located?
- Karen Siller's practice location on file with NPPES is 640 Centre St, Jamaica Plain, MA 02130-2555.
- What is Karen Siller's phone number?
- The practice phone number listed in the NPPES registry for Karen Siller is (617) 983-4100.
- Does Karen Siller accept Medicare?
- Karen Siller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Siller's NPI active?
- Yes — Karen Siller's NPI (1164413779) is active in the NPPES registry as of the last update on 2012-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.