NICHOLAS KEATING LEONARD (MD) – Dermatology Physician, NPI 1386221596

NICHOLAS KEATING LEONARD (MD) is a healthcare provider. based in Acton, Massachusetts. specializing in DERMATOLOGY. They hold the professional credentials MD. They hold a License No. 1023293 (MA). The NPI Number for NICHOLAS KEATING LEONARD (MD) is 1386221596

Main info

Male
5 Years Of Experience
Accepts Medicare Assignment
Name
NICHOLAS KEATING LEONARD (MD)
NPI
1386221596
Phone
(978) 371-7010
Address
526 MAIN ST STE 302
Enumeration Date
24 March 2021
Last Update Date
28 April 2026

Doctor Profile

Medical School Name
UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Secondary Phone
7817625858
Graduation Year
2021 (5 years ago)
PAC ID
1153720842
Group Practice PAC ID
7012982044
Professional Enrollment ID
I20250911004932
Address ID
MA020625161NO128XXROWX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience39
Completeness85
Years active:5State licenses:1Digital endpointsOther names

744 DERMATOLOGY in MA

Provider Addresses for NICHOLAS KEATING LEONARD (MD)

  • 526 MAIN ST STE 302

    ACTON, MA 017203301

    Phone: (978) 371-7010

    Fax: (978) 371-0522

    Type: Mailing

  • 128 Carnegie Row Ste 202

    Norwood, MA 020625162

    Phone: (781) 762-5858

    Fax: (781) 617-6202

    Type: Location

  • 440 E Central St Ste 4

    Franklin, MA 020381374

    Phone: (781) 762-5858

    Fax: (508) 520-9684

    Type: Location

  • 281 LINCOLN ST

    WORCESTER, MA 016052138

    Phone: (508) 334-5979

    Fax: (508) 334-5232

    Type: Mailing

  • 9 PAYSON RD STE 225

    FOXBOROUGH, MA 020351309

    Phone: (781) 762-5858

    Fax: (508) 543-5337

    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: 2025-09-11

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
I20250911004932IDermatologyMATBD

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 01720)

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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: 7012982044View full group profile
NameSpecialtyState
D E R M A T O L O G YIA
Physician AssistantMA
D E R M A T O L O G YVA
Nurse PractitionerMA
Allergy/Immunology, DermatologyMA
D E R M A T O L O G YMA
Nurse PractitionerMA
D E R M A T O L O G YMA
D E R M A T O L O G YMA
Physician AssistantID

Reviews

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Frequently asked questions

Is NICHOLAS KEATING LEONARD (MD) listed with a National Provider Identifier?
Yes — NICHOLAS KEATING LEONARD (MD) has NPI 1386221596 on file in the registry.
Active or inactive — what applies to NICHOLAS KEATING LEONARD (MD)?
You should see NICHOLAS KEATING LEONARD (MD) as active in CMS-hosted NPPES data.
What kind of doctor is NICHOLAS KEATING LEONARD (MD)?
NICHOLAS KEATING LEONARD (MD) is associated with Dermatology Physician in the directory — Clinical services aligned with this taxonomy classification.
What practice footprint exists for NICHOLAS KEATING LEONARD (MD)?
Travel planning: use Acton, Massachusetts as the reference point for NICHOLAS KEATING LEONARD (MD), then confirm.
Does NICHOLAS KEATING LEONARD (MD) accept insurance?
Insurance participation is not part of the core NPI extract — call the plan or office to confirm.

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