Megan Koster, MD
NPI 1891108734 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Megan Koster, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1891108734).
Provider details
- NPI number
- 1891108734
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- L-260278 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 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
734 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 222 | $220 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 142 | $139 |
| Critical Care, Each Additional 30 Minutes99292 | 128 | $109 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 108 | $196 |
| 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 | 70 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 175 | 31 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 120 | 57 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 66 | 12 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 54 | 15 |
| Montelukast Sodium | 52 | 17 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 51 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$80 across 1 record (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
- 2014-06-09
- Last updated
- 2014-06-09
Frequently asked questions
- What is Megan Koster's NPI number?
- Megan Koster's National Provider Identifier (NPI) is 1891108734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Megan Koster's specialty?
- Megan Koster is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Megan Koster located?
- Megan Koster's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.
- What is Megan Koster's phone number?
- The practice phone number listed in the NPPES registry for Megan Koster is (617) 726-2865.
- Does Megan Koster accept Medicare?
- Megan Koster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Megan Koster's NPI active?
- Yes — Megan Koster's NPI (1891108734) is active in the NPPES registry as of the last update on 2014-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.