LIONEL S LIM (MD) – Geriatric Medicine (Internal Medicine) Physician, NPI 1841306818

LIONEL S LIM (MD) is a healthcare provider. based in Boston, Massachusetts. specializing in Geriatric Medicine (Internal Medicine) Physician. They hold the professional credentials MD. They hold a License No. 045812 (CT). The NPI Number for LIONEL S LIM (MD) is 1841306818

Main info

Male
30 Years Of Experience
Accepts Medicare Assignment
Name
LIONEL S LIM (MD)
NPI
1841306818
Phone
(617) 421-2686
Address
133 BROOKLINE AVE
Enumeration Date
22 August 2006
Last Update Date
18 February 2021

Doctor Profile

Medical School Name
OTHER
Secondary Phone
6174211000
Graduation Year
1996 (30 years ago)
PAC ID
1658307095
Group Practice PAC ID
4789588641
Professional Enrollment ID
I20160523000982

Contacts

Secure Messaging
llimmd166672@direct.atrius.masshiway.net
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience81
Completeness85
Years active:19State licenses:2Other namesUpdated within 12 months

Provider Addresses for LIONEL S LIM (MD)

  • 133, Brookline Avenue, Audubon Square, Boston, Suffolk County, Massachusetts, 02215, United States

    BOSTON, MA 022153904

    Phone: (617) 421-2686

    Type: Mailing

  • 20 WALL ST

    BURLINGTON, MA 018034758

    Phone: (781) 221-2500

    Type: Location

  • Harvard Vanguard, 147, Milk Street, Dock Square, Financial District, Boston, Suffolk County, Massachusetts, 02110, United States

    BOSTON, MA 021094806

    Phone: (617) 421-2686

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2016-05-23

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20160523000982IGeriatric MedicineMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 02215)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4789588641View full group profile
NameSpecialtyState
-MA
Family PracticeMA
D E R M A T O L O G YMA
Emergency MedicineMA
Internal Medicine, Cardiovascular Disease (Cardiology)MA
-MA
O B S T E T R I C S/ G Y N E C O L O G YMA
-MA
Internal MedicineMA
O T O L A R Y N G O L O G YMA

Reviews

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Frequently asked questions

Can I cross-check LIONEL S LIM (MD) using NPI 1841306818?
NPI 1841306818 belongs to LIONEL S LIM (MD); compare other details if you need extra assurance.
Is LIONEL S LIM (MD) still an active registrant?
LIONEL S LIM (MD) carries an active NPI according to the public dataset.
How would a patient describe LIONEL S LIM (MD)'s focus?
For LIONEL S LIM (MD), the primary taxonomy reads as Geriatric Medicine (Internal Medicine) Physician. Clinical services aligned with this taxonomy classification.
Is LIONEL S LIM (MD) located near Boston?
LIONEL S LIM (MD) currently maps to Boston, Massachusetts in this extract.
What does 4 location(s) imply?
4 practice locations appear in the available data.

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