KATHERINE T JOHNSTON (M.D., M.A., M.SC.) – Internal Medicine Physician, NPI 1164469763

KATHERINE T JOHNSTON (M.D., M.A., M.SC.) is a healthcare provider. based in Boston, Massachusetts. specializing in INTERNAL MEDICINE. They hold the professional credentials M.D., M.A., M.SC.. They hold a License No. 226586 (MA). The NPI Number for KATHERINE T JOHNSTON (M.D., M.A., M.SC.) is 1164469763

Main info

Female
23 Years Of Experience
Accepts Medicare Assignment
Name
KATHERINE T JOHNSTON (M.D., M.A., M.SC.)
NPI
1164469763
Phone
(617) 726-4900
Address
165 CAMBRIDGE ST STE 501
Enumeration Date
1 June 2006
Last Update Date
7 July 2025

Doctor Profile

Medical School Name
LOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Secondary Phone
6177240287
Graduation Year
2003 (23 years ago)
PAC ID
6901808195
Group Practice PAC ID
2466365820
Professional Enrollment ID
I20070131000520
Address ID
MA021142696BO55XXXSTXX300
Telehealth
Yes
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience64
Completeness85
Years active:20State licenses:1Digital endpointsOther names

7,722 INTERNAL MEDICINE in MA

Provider Addresses for KATHERINE T JOHNSTON (M.D., M.A., M.SC.)

  • 165 CAMBRIDGE ST STE 501

    BOSTON, MA 021142759

    Phone: (617) 726-4900

    Type: Mailing

  • Beth Israel Deaconess Medical Center East Campus, 330, Brookline Avenue, Audubon Square, Boston, Suffolk County, Massachusetts, 02215, United States

    BETH ISRAEL DEACONESS MEDICAL CENTER E/SHAPIRO 1 ATRIUM

    BOSTON, MA 022155400

    Phone: (617) 667-9600

    Type: Location

  • 156;157;158;159, Stone Ridge Road, Franklin, Norfolk County, Massachusetts, 02038, United States

    FRANKLIN, MA 020383174

    Phone: (617) 667-9600

    Type: Mailing

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: 2007-01-31

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
I20070131000520IInternal 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.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99215Established patient office or other outpatient visit, 40-54 minutes21187$0
36415Insertion of needle into vein for collection of blood sample10879$0
99214Established patient office or other outpatient visit, 30-39 minutes5949$0
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit4545$0
90677Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use1818$0
View full utilization report →

Insurance plans in this area (ZIP 02114)

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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: 2466365820View full group profile
NameSpecialtyState
G A S T R O E N T E R O L O G YMA
Diagnostic RadiologyMA
Nephrology, Internal MedicineMA
Nurse PractitionerMA
P A T H O L O G YNY
P A T H O L O G YMA
P S Y C H I A T R YMA
Cardiac Electrophysiology, Internal Medicine, Cardiovascular Disease (Cardiology)MA
H E M A T O L O G Y/ O N C O L O G YMA
N E U R O L O G YMA

Reviews

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Frequently asked questions

Is there an official ID for KATHERINE T JOHNSTON (M.D., M.A., M.SC.) in U.S. healthcare records?
The official identifier for KATHERINE T JOHNSTON (M.D., M.A., M.SC.) is NPI 1164469763.
Is KATHERINE T JOHNSTON (M.D., M.A., M.SC.) still an active registrant?
KATHERINE T JOHNSTON (M.D., M.A., M.SC.) carries an active NPI according to the public dataset.
What kind of doctor is KATHERINE T JOHNSTON (M.D., M.A., M.SC.)?
KATHERINE T JOHNSTON (M.D., M.A., M.SC.) is associated with Internal Medicine Physician in the directory — Clinical services aligned with this taxonomy classification.
Is KATHERINE T JOHNSTON (M.D., M.A., M.SC.) located near Boston?
KATHERINE T JOHNSTON (M.D., M.A., M.SC.) currently maps to Boston, Massachusetts in this extract.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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