Kathryn Malakorn-Lew, MD
NPI 1780639401 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Malakorn-Lew, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1780639401).
Provider details
- NPI number
- 1780639401
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 207033 (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
184 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 68 | $68 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 41 | $37 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $102 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 26 | $99 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 20 | $68 |
Typical Medicare-allowed amounts for these services range $37–$102 (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 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 222 | 63 |
| Hydrochlorothiazide | 177 | 52 |
| Amlodipine Besylate | 173 | 52 |
| Omeprazole | 145 | 38 |
| Lisinopril | 126 | 36 |
| Losartan Potassium | 91 | 24 |
| Levothyroxine Sodium | 79 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2012-06-18
Frequently asked questions
- What is Kathryn Malakorn-Lew's NPI number?
- Kathryn Malakorn-Lew's National Provider Identifier (NPI) is 1780639401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Malakorn-Lew's specialty?
- Kathryn Malakorn-Lew is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Malakorn-Lew located?
- Kathryn Malakorn-Lew's practice location on file with NPPES is 75 Francis Street, Boston, MA 02115.
- What is Kathryn Malakorn-Lew's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Malakorn-Lew is (617) 732-6040.
- Does Kathryn Malakorn-Lew accept Medicare?
- Kathryn Malakorn-Lew is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Malakorn-Lew's NPI active?
- Yes — Kathryn Malakorn-Lew's NPI (1780639401) is active in the NPPES registry as of the last update on 2012-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.